Minerals – Ch 5
Terms
Properties
Groups
Identification
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The mass of a substance
to the volume is its ____
Answer
Density
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The ability of a mineral to
resist scratching is its _____
Answer
Hardness
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Tendency of a mineral to
break and form uneven,
irregular surfaces
Answer
Fracture
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An inorganic solid with
characteristic chemical
composition and physical
properties
Answer
Mineral
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Fluorite and Halite belong
to what mineral group?
Answer
Halides
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The way that light is reflected
from a mineral’s surface
Answer
Luster
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True/False: Chatoyancy
means “cat’s eye” and has
a silky appearance
Answer
True
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What is the color of a
mineral in a powdered
form?
Answer
Streak
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What physical property is
unreliable as an
identification clue for
minerals?
Answer
Color
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What is the tendency of a
mineral to split along
specific planes, forming
flat surfaces?
Answer
Cleavage
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A solid whose atoms,
ions, or molecules are
arranged in a regular,
repeating pattern
Answer
Crystal
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What are the 2 main
groups of minerals?
Answer
Silicates or Nonsilicates
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Minerals are usually
_____, meaning they do
not contain carbon
Answer
Inorganic
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Mineral that does not
contain silicon and oxygen
(SiO2)
Answer
Nonsilicate
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Mineral that contains
silicon and oxygen
compounds
Answer
Silicate
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True or False:
A mineral that glows in
ultraviolet light is
phosphorescent
Answer
False (fluorescent)
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Oxides, Sulfides, Halides,
Carbonates, and Sulfates
are all major classes of
what group of minerals?
Answer
Nonsilicate
Minerals
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Cubes, hexagonal
prisms, and irregular
masses are common
mineral structures for
what group of
minerals?
Answer
Nonsilicate Minerals
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If an unstable atomic
nuclei decays into
stable nuclei, the
mineral is ____.
Answer
Radioactive
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What are 3 physical properties
mineralogists use to identify
minerals?
Answer
Color, streak, hardness,
luster, cleavage, fracture,
density, crystal shape
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What class of minerals is the
most common on Earth?
Answer
Silicates
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What is the softest mineral
on the Moh’s hardness scale?
Answer
Talc
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True/False:
Quartz and Amethyst are
examples of Nonsilicate
Minerals
Answer
False; they are Silicates!
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True/False:
Hematite is an example of a
mineral in the Oxide group
Answer
True
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True/False:
Galena and Mica both have
fracture
Answer
False
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