OROSUR – NOLETIR
Summary - Survey of Calcareous Deposits
Stage 2 Final Report – Analysis of Superficial Samples and Drilling Plan Design
SUMMARY - SURVEY OF CALCAREOUS DEPOSITS
Stage 2 Final Report: Analysis of Superficial Samples and
Drilling Plan Design
OROSUR - NOLETIR
Introduction
In this document analytical results from 335 samples collected from PUNTAS DEL PARAO
PROJECT.
Analytical Results
Sample
A397v
A399c
A400c
A401v
A402v
A403v
A404c
A405c
A406v
A407v
A408c
A409c
A410c
A411v
A411c
A412c2
A413c
A414v
A415v
A416c
A417v
A418v
A419c
A419v
A420c
A421v
A421c
A422c
A423c
A424c
A425c
A426v
A426c
A427v
A427c
A429c
A430v
A430c
A431c
RIn
6.88
4.63
4.22
4.72
3.70
5.91
2.54
8.73
5.03
5.41
5.07
6.75
6.46
3.81
5.06
5.36
12.53
5.37
4.60
5.25
5.90
4.31
7.94
6.29
7.24
6.52
14.87
3.89
9.94
22.37
7.79
5.14
20.39
11.31
19.05
14.17
4.10
10.71
3.26
R2O3n
1.91
1.77
2.24
1.50
2.06
1.68
0.99
1.75
2.05
1.13
1.24
1.05
0.46
1.00
2.75
3.11
8.99
1.47
1.35
11.73
1.35
3.14
4.32
1.29
2.38
1.33
6.23
3.38
4.76
2.60
1.64
1.31
10.13
1.03
11.21
3.96
1.48
3.08
1.30
CaCO3n
86.11
90.09
91.24
88.60
89.90
90.17
93.51
86.52
88.81
84.31
91.26
85.23
85.91
90.52
90.91
89.26
74.71
88.22
87.39
80.94
87.51
86.18
84.50
85.64
87.34
86.44
76.77
91.16
80.26
71.14
82.91
88.12
53.66
84.91
50.00
76.15
90.78
80.64
93.32
MgCO3n
5.10
3.51
2.29
5.19
4.34
2.24
2.95
3.00
4.11
9.15
2.42
6.97
7.18
4.67
1.28
2.26
3.77
4.93
6.67
2.08
5.23
6.37
3.23
6.78
3.04
5.71
2.14
1.57
5.04
3.89
7.66
5.43
15.82
2.76
19.74
5.72
3.63
5.57
2.12
Cal-Ind
no
suitable
suitable
no
no
suitable
suitable
no
no
no
suitable
no
no
suitable
suitable
no
no
no
no
no
no
no
no
no
no
no
no
suitable
no
no
no
no
no
no
no
no
suitable
no
suitable
Cement
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
no
no
suitable
suitable
suitable
no
suitable
no
no
suitable
no
no
no
suitable
suitable
no
suitable
no
no
no
suitable
no
no
no
no
suitable
no
suitable
AC1
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
no
suitable
suitable
no
suitable
suitable
suitable
no
suitable
no
no
no
suitable
no
no
no
no
suitable
no
suitable
OROSUR – NOLETIR
Summary - Survey of Calcareous Deposits
Stage 2 Final Report – Analysis of Superficial Samples and Drilling Plan Design
Sample
A432v
A433c1
A433c2
A435c
A436c
A437c
A438c
A439c
A440v
A441v
A442v
A443v
A444v
A445v
A446v
A446c
A447c
A448v
A449v
A450c
A451c
A452v
A453v
A454v
A455v
A456v
A457c
A458c
A459c
A460c
A461v
A464c
A465c
A467c
A469c
A471c
A473c
A474c
A475c
A476c
A477c
A478c
A481c
A482c
A483c
A488c
A489c
A491c
A492c
A493v
A494c
RIn R2O3n
1.55 1.33
1.85 0.84
3.24 2.49
9.18 2.43
4.30 1.35
9.73 9.71
2.11 1.41
2.85 1.37
2.35 1.20
2.03 1.01
4.62 1.69
2.16 1.28
4.58 1.93
3.84 1.40
2.92 1.57
2.54 1.23
2.44 1.14
3.92 1.14
3.48 2.13
9.36 1.34
2.13 1.09
10.04 1.44
5.41 1.52
1.99 1.01
2.30 0.87
0.88 1.93
5.32 1.94
11.01 2.28
15.14 3.16
7.25 1.56
2.85 2.22
6.03 1.33
6.21 1.79
5.26 2.30
2.73 0.85
3.62 1.31
3.88 1.16
4.51 1.54
8.60 2.22
9.57 3.22
2.41 0.83
8.75 1.43
9.77 1.03
11.82 1.36
4.42 1.06
8.94 0.90
4.52 1.44
4.38 1.42
3.90 0.58
5.60 1.78
2.47 0.67
CaCO3n
93.24
95.42
91.83
85.21
90.82
71.61
93.06
92.91
93.18
93.55
90.62
93.58
90.30
92.91
93.84
92.70
93.15
91.75
93.32
84.57
94.57
85.83
89.48
95.68
95.18
96.10
88.91
83.09
76.02
87.82
93.60
89.99
87.29
88.23
93.89
91.65
91.76
90.01
82.61
83.90
92.30
86.79
85.92
83.43
91.06
86.33
90.28
90.15
90.77
89.52
92.56
MgCO3n
3.87
1.88
2.43
3.18
3.53
8.95
3.42
2.87
3.27
3.42
3.07
2.98
3.18
1.86
1.67
3.53
3.27
3.19
1.06
4.74
2.22
2.69
3.59
1.32
1.65
1.09
3.83
3.62
5.68
3.36
1.33
2.66
4.71
4.21
2.54
3.42
3.20
3.94
6.57
3.31
4.45
3.04
3.29
3.39
3.46
3.82
3.75
4.05
4.75
3.11
4.29
Cal-Ind
suitable
suitable
suitable
no
suitable
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
no
no
suitable
suitable
suitable
no
no
no
no
suitable
no
no
no
suitable
suitable
suitable
suitable
no
no
suitable
no
no
no
suitable
no
suitable
suitable
suitable
no
suitable
Cement
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
no
suitable
suitable
suitable
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
AC1
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
no
suitable
suitable
suitable
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
OROSUR – NOLETIR
Summary - Survey of Calcareous Deposits
Stage 2 Final Report – Analysis of Superficial Samples and Drilling Plan Design
Sample
A495v
A496c
A499c
A503c
A506c
A511c
A512c
A516c
A517c
A518v
A519v
A521c
A522c
A523c
A524c
A525c
A526c
A527c
A529c
A530c
M779v
M780c
M781v
M782c
M783c
M784c
M785v
M786v
M787v
M788c
M789c
M790c
M791c
M792v
M794v
M795c
M796v
M797v
M798v
M799v
M800v
M801v
M802c
M804v
M805v
M806v
M807v
M808v
M809v
M810c
M811v
RIn R2O3n
2.48 1.98
1.89 0.96
4.61 1.36
4.31 1.28
2.97 0.78
3.36 1.26
2.14 1.82
4.88 1.39
6.37 2.69
2.51 1.21
9.69 5.14
4.77 1.42
3.22 2.11
1.71 0.40
3.37 0.82
10.87 6.10
4.80 1.73
12.55 5.51
5.75 1.37
5.25 1.10
7.47 2.63
7.31 1.98
5.84 1.55
10.79 3.14
6.74 2.26
13.38 1.78
2.10 0.79
8.44 2.81
4.66 1.12
7.48 2.32
7.02 1.34
13.19 3.35
17.71 7.50
2.36 0.80
5.92 1.68
14.28 2.50
5.32 1.42
2.68 1.50
7.78 1.51
1.63 0.69
3.15 0.89
5.26 1.08
9.63 2.66
2.28 0.87
4.02 1.33
1.47 1.01
2.23 0.90
2.21 0.59
2.36 0.85
12.11 0.92
4.49 1.19
CaCO3n
93.75
93.38
88.81
90.25
92.20
90.75
83.83
87.76
85.27
94.24
82.46
87.83
82.51
91.24
89.48
71.37
83.62
75.86
87.16
87.86
87.45
88.95
91.21
82.03
85.93
79.67
95.88
83.36
91.20
81.83
87.11
77.20
65.06
95.62
89.25
78.89
89.57
90.37
87.17
94.48
92.21
88.25
79.30
94.66
91.48
95.15
94.19
94.66
94.60
84.21
91.61
MgCO3n
1.79
3.77
5.23
4.16
4.05
4.63
12.21
5.97
5.67
2.04
2.71
5.98
12.16
6.65
6.33
11.66
9.85
6.07
5.72
5.80
2.44
1.76
1.41
4.04
5.07
5.16
1.23
5.39
3.02
8.36
4.53
6.26
9.73
1.22
3.15
4.33
3.70
5.45
3.54
3.20
3.75
5.40
8.41
2.19
3.17
2.37
2.68
2.54
2.19
2.76
2.71
Cal-Ind
suitable
suitable
no
suitable
suitable
suitable
no
no
no
suitable
no
no
no
suitable
no
no
no
no
no
no
no
no
suitable
no
no
no
suitable
no
suitable
no
no
no
no
suitable
no
no
no
suitable
no
suitable
suitable
no
no
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
Cement
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
suitable
no
suitable
no
no
no
no
no
no
suitable
suitable
suitable
suitable
suitable
no
suitable
no
suitable
no
suitable
no
suitable
no
no
suitable
suitable
no
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
AC1
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
suitable
no
suitable
no
suitable
suitable
no
no
no
suitable
suitable
suitable
suitable
suitable
no
suitable
no
suitable
no
suitable
no
suitable
no
no
suitable
suitable
no
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
OROSUR – NOLETIR
Summary - Survey of Calcareous Deposits
Stage 2 Final Report – Analysis of Superficial Samples and Drilling Plan Design
Sample
M812v
M813c
M814v
M815c
M816c
M817v
M818c
M819v
M820c
M821v
M822v
M823c
M824v
M825v
M826c
M827v
M828c
M829v
M830c
M831v
M832c
M833c
M834c
M835c
M836c
M837c
M838v
M839c
M840c
M841v
M842v
M844c
M845v
M846c
M847c
M848c
M849v
M850v
M851c
M853v2
M854v
M855v
M856v
M857v
M858v
M859c
M860v
M861c
M862c
M863v
M865v
RIn R2O3n
2.20 0.91
4.02 1.39
7.20 2.25
4.05 1.23
1.55 2.15
1.36 0.71
3.42 1.59
1.95 1.03
2.85 1.06
2.34 0.88
3.49 0.96
1.72 2.02
3.07 0.86
2.16 1.08
1.35 0.86
1.58 1.50
3.85 1.24
1.57 1.39
5.18 1.47
3.33 2.40
5.23 1.80
4.92 1.63
8.54 0.85
7.43 0.94
2.73 4.17
4.92 0.80
6.95 2.07
5.73 1.25
5.55 1.15
9.68 2.83
3.62 3.50
4.21 1.59
6.03 1.69
4.29 1.55
3.68 1.14
1.76 0.76
1.68 2.10
10.71 8.53
10.76 2.12
6.13 1.81
3.37 2.17
3.84 2.35
7.16 4.02
4.28 2.08
13.36 3.45
9.46 4.04
19.79 7.90
6.35 3.10
5.28 1.43
4.16 0.98
8.25 2.21
CaCO3n
94.81
91.37
87.47
93.31
94.72
95.27
92.68
93.92
94.41
94.41
92.41
93.71
92.99
94.74
96.74
94.51
92.72
93.76
90.97
90.82
90.41
91.08
85.93
86.80
91.08
92.47
86.44
89.24
78.98
76.92
88.41
88.68
88.27
91.09
91.72
96.91
93.08
73.84
81.48
89.46
91.95
91.08
83.75
89.56
79.76
79.30
66.33
84.11
89.22
91.89
88.39
MgCO3n
2.08
3.21
3.08
1.41
1.58
2.67
2.31
3.10
1.68
2.37
3.14
2.55
3.08
2.01
1.05
2.41
2.19
3.27
2.38
3.44
2.55
2.37
4.67
4.83
2.02
1.81
4.53
3.77
14.31
10.58
4.47
5.52
4.00
3.08
3.47
0.58
3.15
6.92
5.64
2.60
2.50
2.73
5.07
4.08
3.42
7.20
5.98
6.44
4.07
2.97
1.15
Cal-Ind
suitable
suitable
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
no
suitable
suitable
no
no
no
no
no
no
no
suitable
suitable
suitable
suitable
no
no
no
suitable
suitable
no
no
no
no
no
no
no
suitable
no
Cement
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
no
suitable
suitable
suitable
no
suitable
no
no
no
no
suitable
suitable
suitable
AC1
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
no
suitable
suitable
suitable
no
suitable
no
no
no
no
suitable
suitable
suitable
OROSUR – NOLETIR
Summary - Survey of Calcareous Deposits
Stage 2 Final Report – Analysis of Superficial Samples and Drilling Plan Design
Sample
M866c
M867c
M868v
M869v
M870c
M871v
M872c
M873v
M874c
M875c
M876c
M878c
M879c
M880c
M881v
M882c
M883v
M884v
M885c
M888c
M889c
M892c
M893c
M894v
M895v
M896c
M897v
M898c
M899c
M900c
M901c
M902v
M903c
M904v
M905c
M906c
M907v
M908v
M909v
M910c
M911c
M912c
M913c
M914c
M916c
M918c
M919c
M920c
M921c
M923c
M924c
RIn R2O3n
9.92 3.32
3.20 2.40
3.96 1.07
6.31 2.44
2.60 1.90
2.45 0.93
16.63 2.22
3.93 0.62
1.71 2.79
7.97 2.78
37.69 12.79
15.19 3.62
4.38 2.59
4.57 1.74
2.55 1.01
5.79 2.18
5.69 1.80
3.19 1.04
9.53 2.48
12.34 1.79
7.18 2.24
4.32 2.39
4.67 2.08
3.01 1.24
3.14 1.01
2.40 2.38
2.94 0.94
12.54 5.77
3.12 3.20
2.15 0.52
4.56 0.87
4.79 1.46
7.40 1.99
9.87 3.37
18.53 2.61
8.55 2.01
2.34 0.77
9.96 4.48
8.52 1.49
4.72 1.44
2.69 0.87
3.84 1.36
2.32 1.15
15.14 2.66
10.64 1.79
12.64 1.27
5.26 1.03
5.59 0.68
5.19 0.84
4.44 1.84
3.04 1.39
CaCO3n
78.54
92.01
91.89
88.90
91.71
93.93
78.73
94.52
91.27
81.38
41.67
72.11
89.55
91.17
93.05
86.32
89.78
91.86
79.08
80.44
85.16
91.24
88.62
90.24
92.67
91.50
92.75
71.38
91.03
94.84
93.73
87.86
55.38
80.85
71.44
84.97
92.11
75.11
85.33
90.71
65.60
83.34
93.17
71.18
80.68
76.35
90.89
89.96
90.61
86.62
92.69
MgCO3n
8.22
2.40
3.08
2.35
3.80
2.69
2.42
0.93
4.23
7.87
7.85
9.09
3.48
2.51
3.39
5.71
2.72
3.91
8.91
5.43
5.42
2.05
4.63
5.51
3.18
3.72
3.36
10.32
2.65
2.48
0.85
5.90
35.23
5.91
7.42
4.46
4.78
10.46
4.67
3.14
30.84
11.45
3.36
11.02
6.89
9.73
2.81
3.77
3.35
7.10
2.87
Cal-Ind
no
suitable
suitable
no
suitable
suitable
no
suitable
suitable
no
no
no
no
suitable
suitable
no
no
suitable
no
no
no
suitable
no
suitable
suitable
suitable
suitable
no
suitable
suitable
suitable
no
no
no
no
no
suitable
no
no
suitable
no
no
suitable
no
no
no
suitable
no
suitable
no
suitable
Cement
no
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
no
no
no
suitable
suitable
suitable
suitable
suitable
suitable
no
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
suitable
suitable
no
no
no
no
suitable
no
suitable
suitable
no
no
suitable
no
no
no
suitable
suitable
suitable
no
suitable
AC1
no
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
no
no
no
suitable
suitable
suitable
suitable
suitable
suitable
no
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
suitable
suitable
no
no
no
no
suitable
no
suitable
suitable
no
no
suitable
no
no
no
suitable
suitable
suitable
suitable
suitable
OROSUR – NOLETIR
Summary - Survey of Calcareous Deposits
Stage 2 Final Report – Analysis of Superficial Samples and Drilling Plan Design
Sample
A583c
A584c
A585c
A586c
A587c
A588v
A589c
A590c
A591c
A592c
A593v
A594c
A595c
A596v
A597v
A598c
A599c
A600v
A601v
A602c
A603c
A604c
A605c
A606c
A607v
A608c
A609v
A610c
A611c
A612c
A613c
A614v
A615v
A616c
A617v
A618c
A619v
A620v
A621c
A622c
A623v
A624v
A625c
A626v
A627c
A628v
A629c
A630v
A632v
A633v
A634v
RIn R2O3n
3.53 2.57
2.33 2.05
4.55 2.72
4.07 2.83
2.72 1.72
3.51 2.32
4.00 2.50
3.75 1.28
5.19 1.60
7.28 1.56
3.81 1.03
4.02 1.87
6.86 4.24
6.22 1.14
6.89 1.03
5.05 1.88
1.92 1.04
2.24 1.54
3.61 1.01
4.66 0.74
2.34 0.78
15.07 1.88
6.24 2.11
4.63 1.23
2.66 1.39
6.48 1.95
8.20 4.91
10.76 2.36
5.02 1.58
5.32 1.55
1.59 1.55
0.10 1.23
2.26 2.80
6.13 2.08
4.76 2.08
1.72 1.93
1.59 1.81
3.22 1.64
4.79 2.29
10.16 2.40
2.12 1.36
2.86 2.14
2.13 1.74
3.42 1.81
10.56 1.87
3.30 1.28
10.52 1.94
6.86 2.87
3.61 2.58
3.54 3.06
2.72 3.76
CaCO3n
88.37
71.32
87.06
86.61
93.42
91.17
88.21
91.25
88.77
87.08
90.87
87.80
70.34
85.65
84.81
86.50
90.65
89.30
89.64
91.02
89.39
80.22
87.87
93.06
94.53
89.27
83.62
83.83
91.51
91.52
93.74
97.96
93.08
88.63
89.39
94.52
93.66
92.73
89.71
85.01
94.57
90.60
95.19
91.88
85.07
93.30
84.17
85.55
88.81
88.23
87.79
MgCO3n
5.53
24.30
5.67
6.48
2.14
3.01
5.29
3.72
4.44
4.08
4.29
6.32
18.55
7.00
7.26
6.58
6.40
6.91
5.74
3.57
7.48
2.82
3.78
1.08
1.42
2.30
3.27
3.04
1.90
1.61
3.13
0.70
1.86
3.16
3.77
1.83
2.94
2.41
3.22
2.43
1.96
4.39
0.93
2.88
2.51
2.13
3.38
4.72
5.00
5.17
5.73
Cal-Ind
no
no
no
no
suitable
suitable
no
suitable
no
no
suitable
no
no
no
no
no
suitable
no
no
suitable
no
no
no
suitable
suitable
no
no
no
suitable
suitable
suitable
suitable
suitable
no
no
suitable
suitable
suitable
no
no
suitable
suitable
suitable
suitable
no
suitable
no
no
no
no
no
Cement
suitable
no
suitable
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
no
no
no
no
no
no
suitable
suitable
no
no
suitable
suitable
suitable
suitable
no
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
suitable
suitable
AC1
suitable
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
no
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
suitable
suitable
no
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
suitable
suitable
OROSUR – NOLETIR
Summary - Survey of Calcareous Deposits
Stage 2 Final Report – Analysis of Superficial Samples and Drilling Plan Design
Sample
M151v
M152c
M153c
M154v
M155v
M156c
M157c
M158c
M159v
M160c
M161v
M162v
M163v
M164v
M165v
M166v
M167c
M168c
M169c
M170c
M171c
M172c
M173v
M174c
M175v
M176c
M177c
M178c
M179c
M181c
M182c
M183c
M184v
M185c
M186v
M187c
M188c
M189c
M190v
M191c
M192v
RIn R2O3n
5.07 1.19
2.43 0.51
5.98 1.97
1.67 1.85
1.74 1.54
4.94 2.14
4.78 5.84
10.36 4.02
5.08 2.26
3.86 1.32
1.91 1.65
2.68 2.66
2.43 2.24
5.74 0.90
3.52 1.03
4.27 3.19
5.62 2.60
3.75 1.42
2.13 1.38
3.77 1.62
6.91 1.14
8.10 2.86
5.82 1.73
3.38 1.94
4.08 2.32
1.85 1.55
1.48 0.81
7.10 2.27
3.60 1.47
3.68 1.33
5.31 5.27
5.20 1.39
4.34 1.29
3.68 1.62
1.98 1.79
1.64 0.87
5.19 2.73
6.51 1.67
3.38 1.28
7.30 3.18
4.24 1.38
CaCO3n
89.36
94.16
86.38
93.93
94.08
87.92
83.47
80.53
89.45
93.19
93.69
91.37
93.06
90.55
93.46
90.50
85.60
91.94
92.32
90.68
88.81
85.51
89.20
90.67
89.07
95.07
94.87
88.80
91.92
92.31
86.89
90.29
90.13
92.40
93.04
95.05
88.15
89.47
92.50
85.33
91.13
MgCO3n
4.37
2.89
5.67
2.55
2.63
5.00
5.91
5.09
3.20
1.64
2.74
3.30
2.28
2.81
2.00
2.05
6.17
2.89
4.18
3.93
3.14
3.52
3.24
4.01
4.53
1.53
2.84
1.84
3.01
2.67
2.53
3.12
4.24
2.30
3.20
2.44
3.93
2.35
2.84
4.18
3.24
Cal-Ind
no
suitable
no
suitable
suitable
no
no
no
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
suitable
no
no
no
suitable
no
suitable
suitable
no
suitable
suitable
no
suitable
suitable
suitable
suitable
suitable
no
no
suitable
no
suitable
Cement
suitable
suitable
suitable
suitable
suitable
suitable
no
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
AC1
suitable
suitable
suitable
suitable
suitable
suitable
no
no
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
suitable
Values presented on the table attached are:







Sample: name of the sample collected in the field;
UTMx/UTMy: plain coordinates in UTM system (Sector 21S) with WGS84 datum
RI: insoluble waste in percentage, normalized to 100%
R2O3n: generic oxide (iron, manganese, etc.) in percentage, normalized to 100%
CaCO3n: calcium carbonate in percentage, normalized to 100%
MgCO3n: magnesium carbonate in percentage, normalized to 100%
Cal-Ind: Indicates if the sample is suitable for industrial lime (CaCO3n >= 90%)
OROSUR – NOLETIR
Summary - Survey of Calcareous Deposits
Stage 2 Final Report – Analysis of Superficial Samples and Drilling Plan Design


Cement: indicates if the sample is suitable for Portland cement (CaCO 3n >= 85% &
MgCO3n <= 6%)
AC1: indicates if the sample is suitable for agricultural use (energetic control of pH:
CaCO3n >= 85%)
The descriptive statistic for each parameter is presented next:
Calcium Carbonate
CaCO3 - Descriptive
Mean Deviation
Typical Error
Median Deviation
Mode
Standard Deviation
Sample Variance
Kurtosis
Asymmetry Coefficient
Rank
Minimum
Maximum
Adding
Calculation
CaCO3n - Descriptive
88.79
0.432
90.18
92.7
7.90
62.544
6.96
-2.01
59.75
43
102.75
29745.2
335
Mean Deviation
Typical Error
Median Deviation
Mode
Standard Deviation
Sample Variance
Kurtosis
Asymmetry Coefficient
Rank
Minimum
Maximum
Adding
Calculation
87.91
0.392
89.64
#N/A
7.18
51.496
9.63
-2.51
56.29
41.67
97.96
29449.3
335
80
100%
70
90%
80%
60
70%
50
60%
40
50%
30
40%
30%
20
20%
10
10%
0
0%
<=80
82
84
86
88
90
92
94
96
98
100
Clase
Distribución de los valores de CaCO3n analizados.
The medium value of CaCO3n is 87.9 ± 7.2%. There are 264 analytical values with numbers
over 85% and 162 values over 90%. CaCO3n distribution is showed in the picture attached.
Carbonate mineralization is concurrent with the regional structure appearing like an open
North-South fold and hinge dipping to the North. The base of the sequence would be located
at the South and the top in the northern area.
OROSUR – NOLETIR
Summary - Survey of Calcareous Deposits
Stage 2 Final Report – Analysis of Superficial Samples and Drilling Plan Design
MgCO3n medium value is 4.4 ± 3.4%. There are 324 analytical values with numbers above 6%.
MgCO3n distribution is shown in the histogram attached.
Magnesium carbonate
MgCO3 - Descriptive
Mean Deviation
Typical Errror
Median Deviation
Mode
Standard Deviation
Sample Variance
Kurtosis
Asymmetry Coefficient
Rank
Minimum
Maximum
Adding
Calculation
MgCO3n - Descriptive
4.46
0.19
3.5
3.5
3.57
12.72
24.09
4.09
32.21
0.57
32.78
1493.1
335
Mean Deviation
Typical Error
Median Deviation
Mode
Standard Deviation
Sample Variance
Kurtosis
Asymmetry Coefficient
Rank
Minimum
Maximum
Adding
Calculation
4.40
0.19
3.42
#N/A
3.56
12.71
29.09
4.46
34.65
0.58
35.23
1472.95
335
100
100%
90
90%
80
80%
70
70%
60
60%
50
50%
40
40%
30
30%
20
20%
10
10%
0
0%
0
1
2
3
4
5
6
7
8
9
10
y
mayor...
Clase
Distribution of MgCO3n values analyzed.
Superficial analysis is coherent with the geological structure analyzed. The sides of the fold
have the lowest values of magnesium carbonate and the highest of calcium carbonate. As it
can be seen in the area where interpolation of analytical information can be considered valid,
there are more than 308 hectares with MgCO3 concentration of less than 6% in weight,
fulfilling requirements for Portland cement making.
OROSUR – NOLETIR
Summary - Survey of Calcareous Deposits
Stage 2 Final Report – Analysis of Superficial Samples and Drilling Plan Design
Insoluble Waste
RI - Descriptive
RIn - Descriptive
5.71
0.23
4.64
5.50
4.17
17.41
13.32
2.68
38.80
0.10
38.90
1914.44
335
Mean Deviation
Typical Error
Median Deviation
Mode
Standard Deviation
Sample Variance
Kurtosis
Asymmetry Coefficient
Rank
Minimum
Maximum
Adding
Calculation
Mean Deviation
Typical Error
Median Deviation
Mode
Standard Deviation
Sample Variance
Kurtosis
Asymmetry Coefficient
Rank
Minimum
Maximum
Adding
Calculation
5.63
0.22
4.60
#N/A
4.07
16.57
12.78
2.64
37.59
0.10
37.69
1887.39
335
120
100%
90%
100
80%
70%
80
60%
60
50%
40%
40
30%
20%
20
10%
0
0%
0
2
4
6
8
10
12
14
16
y mayor...
Clase
Distribution of RIn values analyzed.
R2O3
R2O3 - Descriptive
Mean Deviation
Typical error
Median Deviation
Mode
Standard Deviation
Sample Variance
Kurtosis
Asymmetry coefficient
Rank
Minimum
Maximum
Adding
Calculation
R2O3n - Descriptive
2.08
0.09
1.60
1.90
1.67
2.80
15.52
3.48
12.80
0.40
13.20
697.99
335
Mean Deviation
Typical error
Median Deviation
Mode
Standard Deviation
Sample Variance
Kurtosis
Asymmetry coefficient
Rank
Minimum
Maximum
Adding
Calculation
2.06
0.09
1.60
#N/A
1.65
2.72
15.32
3.48
12.39
0.40
12.79
690.36
335
OROSUR – NOLETIR
Summary - Survey of Calcareous Deposits
Stage 2 Final Report – Analysis of Superficial Samples and Drilling Plan Design
Reserves Calculation
By estimation of resources we mean determining the amount of row material in a deposit or
in one of its parts. This formal quantification of mineral raw material estimated by empirical
or theoretical procedures is called Mineral inventory which is expressed in terms of resources
and reserves.
Resources estimation is an end for each stage of mineral deposits prospection and exploration
works and this process continues during the exploitation of the deposit. All exploration works
in a deposit contribute to a more precise estimation of mineral raw material. The estimation
of resources/reserves is considered an ongoing process starting with exploration and the
collection of information followed by geological interpretation and resources estimation.
Later, modifying factors are considered (mining, metallurgical, environmental, legal, etc.)
and the reserves estimate is calculated. The amount of reserves in a deposit, as one of the
factors determining its economical feasibility, has a big influence in the deposit’s useful life,
its annual production and the final decision to build the mining company.
The different methods used at present for resource estimation are defined by the
interpretation principles used and spatial interpolation techniques. This way the classical
methods of calculation developed and used from the beginning of mining up to the present
are obtained, based on manual procedures where the main parameters are estimated from
the arithmetic mean deviation and adjusted mean deviation. On the other hand there are
methods assisted by computers including the adjustment method by adjustment of the
distance inverse and geostatistics fundamented in mathematical interpolation procedures
defined from spatial information in the data.
Traditional categorization methods use the following criteria:
a) Geological continuity: The classification of resources and mineral reserves depends
on the understanding of the deposit origin and the appreciation of the geological
continuity of the volume mineralized. It is very important to establish here the
physical continuity or geometry of the mineralization or of the controlling structures.
Physical or geometrical continuity is not easily quantifiable. To Establish this type of
continuity it is necessary to analyze data available and establish the deposit’s
geological model on the grounds of the existing knowledge and previous experience
from similar deposits;
b) Density of the exploration net (study grade): For the different categories a
determined spacing from the exploration net is recommended which depends on the
type of deposit. Nets for each category are considered on the base of experience
(analogy principle) and other similar deposits;
c) Interpolation versus extrapolation: Blocks whose values have been estimated
through interpolation (they are inside the sampling net) are classified in more reliable
categories than those beyond the last line of shafts (extrapolated). Most classification
systems require not including extrapolated blocks in the measured resources class;
OROSUR – NOLETIR
Summary - Survey of Calcareous Deposits
Stage 2 Final Report – Analysis of Superficial Samples and Drilling Plan Design
d) Technological aspects: Includes certain aspects that can be used to discriminate or
reject a resource in a given category. As an example, the presence of damaging
elements which make good recovery impossible or make extraction of the useful
component during the extraction process expensive. En el caso que nos ocupa quedan
definidas por los cortes típicos para el uso de rocas calcáreas en general:

For industrial use lime: CaCO3 >= 90

For Portland Cement: CaCO3 >= 85 & MgCO3 <= 6

For agricultural use: C1 ( pH energetic control) CaCO3 >= 85

For agricultural use: C2 (pH residual control) MgCO3 >= 30 (citrus, primor, etc.)

As industrial use Dolomites: MgCO3 >= 35 & RI <= 8 & R2O3 < 1
e) Information quality: drill core recovery, the volume of samples, the form they were
collected and the drilling method influence directly the quality of the information.
Areas where there are reliability or representation problems in analysis must be
excluded from the measured resource category.
Geostatistic methods are considered the most trustable as they reflect – mainly – the amount
and quality of information used to assess reserves. These diagrams were generically called
geostatistics classifications as they are based on Kriging variance. In this sense Geostatistics is
recommended as a valid and trustable procedure in most classification systems, becoming a
standard in mineral resources estimation.
The code proposed by the ONU, for example, proposes the use of geostatistics to classify
resources as it makes it possible to identify quickly resources categories and mineral reserves
(UN-ECE,1996).
The variogram makes it possible to quantify the continuity or correlation level among the
samples in a given mineralized area. The grade of this correlation has been frequently used to
classify resources and reserves. Froidevaux (1982) recommended 3 types of classification:



Blocks in the sampled area located inside the influence radius defined by the
variogram´s scope;
Blocks in the sampled area located beyond the influence radius defined by the
variogram´s scope;
Blocks inside the deposit located at a big distance from shafts (including extrapolated
blocks).
Typically, two focuses have been used to classify resources using the variogram. The first is
based on an arbitrary subdivision of the scope observed. For example, all estimated blocks
with a minimum number of samples located inside a determined influence radius could be
classified as measured resources while all estimated blocks with a minimum number of
samples found beyond the influence radius will be classified as indicated.
In the second focus, resources categories are based on the plateau’s values. For example,
blocks in a variogram area corresponding to 2/3 of the value of the Plateau can be classified
as average, the ser are indicated.
OROSUR – NOLETIR
Summary - Survey of Calcareous Deposits
Stage 2 Final Report – Analysis of Superficial Samples and Drilling Plan Design
Kriging allows obtaining, besides the value estimation of a block, an indication of the local
precision through Kriging variance (Vk). From the beginning of Kriging development Vk has
been used to determine the estimation’s trust intervals. For this reason it is necessary to
assume that it adjusts to a normal or log normal model. However, it is strange in practice
that estimation mistakes are subordinated to these distribution models.
As for the calculation of Kriging variance only the configuration of the samples in space and
not their local values is used, it must not be interpreted as a local variability measure. On the
other hand Vk is calculated from the deposit’s average variogram; it is not only a sign of
spatial disposition of the samples but also characterizes global average variances allowing
discrimination among classes or resources categories.
According to Valente (1982), percentage error in the estimation of the average, for a Group
of n estimated blocks for a 95 % de probability can be calculated by the expression:
𝜀𝑘 = 200
√∑𝑛𝐼=1 𝜎 2
∑𝑛𝐼=1 𝑡𝑘𝑖
Where tki and 2 are estimated values for Kriging and Kriging variance of each of the blocks.
Reserves classification from the use of Kriging error from the average.
Reserve
Measure
Indicated
Inferred
Average Error Kriging
 20%
20% - 50%
50%
With the concepts exposed Voronoi polygons were created for calcium carbonate contents
and magnesium carbonate at 100% in the Pictures attached. Cuts were done every 2% for
CaCO3 in interval 86 – 92% and for MgCO3 in interval 4 – 8%. The areas analyzed were
calculated for all those polygons with Kriging error of the average inferior to 20% (measured
reserves) and an interval of greater trust to 80% (proven reserves according to Diehl & David,
1982).
The calculation of reserves volumes is considered proven for the first 5 meters of depth and
potential up to 15 meters. From there on they are potential and even inferred, until getting
the results of the drilling plan.
OROSUR – NOLETIR
Summary - Survey of Calcareous Deposits
Stage 2 Final Report – Analysis of Superficial Samples and Drilling Plan Design
Reserves (Mton in bank)
CaCO3(n)
<86.00%
86.01-88.00%
88.01-90.00%
90.01-92.00%
>92.00%
Area (m2)
624745
523821
826522
1141998
554561
5m
9.06
7.60
11.98
16.56
8.04
10m
18.12
15.19
23.97
33.12
16.08
15m
27.18
22.79
35.95
49.68
24.12
30m
54.35
45.57
71.91
99.35
48.25
50m
90.59
75.95
119.85
165.59
80.41
>90.00%
1696559
24.60
49.20
73.80
147.60
246.00
At 5 meters depth, 24.6 million tones in caliches bench with more than 90% of calcium
carbonate as measured and proved reserves are defined. Potential reserves with higher
certainty (trust = 75% ± 5%) are established in 49.2 million tones in bench. Potential reserves
with less certainty (trust = 60%) reach 73.8 million caliches tones with more than 90% of
CaCO3.
MgCO3(n)
Area
(m2)
5m
Reserves (Mton in bank)
10m
15m
30m
50m
<4.00%
4.01-6.00%
1995489
1021987
28.93
14.82
57.87
29.64
86.80
44.46
173.61
88.91
289.35
148.19
6.01-8.00%
>8.00%
335050
319123
4.86
4.63
9.72
9.25
14.57
13.88
29.15
27.76
48.58
46.27
<6.00%
3017476
43.75
87.51
131.26
262.52
437.53
Considering exclusively the content of magnesium carbonate, 43.75 million tones are defined
in reserves bench measured and proved at a 5 meters depth with content inferior to 6% of this
component. Potential reserves reach 87.51 and 131.26 million tones in bench according to the
two trust intervals defined for CaCO3. As it can be seen, magnesium carbonate is not the
discriminator component to use caliches limestone as raw material for Portland cement, but
the content of calcium carbonate.
Condition
CaCO3 ≥ 90.00% &
MgCO3 ≤ 6%
CaCO3 ≥ 90.00% &
MgCO3 ≤ 4%
Reserves (Mton in bank)
10m
15m
30m
Area (m2)
5m
50m
1681578
24.38
48.77
73.15
146.30
243.83
504678
7.32
14.64
21.95
43.91
73.18
In the attached chart there are reserves calculations for polygons complying with conditions
to make Portland cement in two situations: magnesium carbonate inferior to 6% (maximum
acceptable) and inferior to 4%.
OROSUR – NOLETIR
Summary - Survey of Calcareous Deposits
Stage 2 Final Report – Analysis of Superficial Samples and Drilling Plan Design
Proved reserves measures are about 24.38 million tones in bench for a 5 meters depth (90/6)
and 7.32 million tones in identical conditions for 90/4.
Potential reserves vary from 14.64 to 73.15 million tones in bench. Top reserves can reach
240 million tones in the bench.
There was no deduction on the values exhibited regarding operations, logistics/strategy
and/or environment.
Design of Drilling Plan
Es expressed in this document, the geological structure of the solid metacalcareous is
defined as an open fold with dip to the North and vertical hinge. The floor of the sequence is
in the South while the top (conglomerates from Barriga Negra Formation) are in the North.
Both sides show the best conditions as raw material for Portland cement making for its
content in calcium carbonates and magnesium.
Considering the aforementioned, two areas are defined as top interest areas to be exploited,
one in each side of the fold. In each one of them a profile was established where drillings
sloping to 60°South, with a 50 meters depth each of them will be made.
Profile #1 is in the western side and has 13 drillings along a SW-NE direction line. Profile #2 is
in the Eastern side, with 7 drillings in a SSW-NNE direction line. Each drilling´s location is
shown in the picture attached and s given by its UTM coordinates.
Drillings will be executed through rotation with Diamond bit, extracting cores diameter NQ
(47.6mm), BTW-C (42.0mm) or NTW-C (56.0mm) organized in wooden boxes specially built
with that purpose. Every drilling will be described from structural and composition point of
view and recorded through photographs. In calcareous consolidated areas three meters long
samples will be taken cutting the core in half and one of the halves in two quarters. One of
the quarters will be analyzed and the other will be kept in bags as backup.
OROSUR – NOLETIR
Summary - Survey of Calcareous Deposits
Stage 2 Final Report – Analysis of Superficial Samples and Drilling Plan Design
Drilling NQ as those proposed here.
Complete drilling, described and ready for sampling.
These drillings will make it possible to know the distribution of carbonates in depth
(magnesium and calcium) and define tendencies in “z” axis. In geological cuts attached there
are tendencies in North – South direction, showing that CaCO3 content diminishes from South
to North opposite to what happens with MgCO3.
OROSUR – NOLETIR
Summary - Survey of Calcareous Deposits
Stage 2 Final Report – Analysis of Superficial Samples and Drilling Plan Design
In this first drilling stage along specific profiles the aim is to find out if calcareous
mineralization (in terms of flair for the purposes planned, especially as consumables for
Portland cement making) has a stratabound structure as on the surface.
It must be considered that this situation is not common in deposits of metamorphic calcareous
Rocks in Uruguay, as in most cases trends or spatial behaviors can not be defined agreeing
with the local regional structure.