Amphibole (pronunciation: /ˈæmfᵻboʊl/) is the name of an important group of generally dark-colored, inosilicate minerals, forming prism or needlelike crystals, composed of double chain SiO4 tetrahedra, linked at the vertices and generally containing ions of iron and/or magnesium in their structures.
Aegirine
Aegirine is a member of the clinopyroxene group of inosilicates.
Aenigmatite
Aenigmatite, also known as Cossyrite after Cossyra, the ancient name of Pantelleria, is a sodium, iron, titanium inosilicate mineral.
Diopside
Diopside is a monoclinic pyroxene mineral with composition MgCaSi2O6.
Actinolite
Actinolite is an amphibole silicate mineral with the chemical formula Ca2(Mg4.5-2.5Fe2+0.5-2.5)Si8O22(OH)2.
Serandite
Serandite is a mineral with formula Na(Mn2+,Ca)2Si3O8(OH).
Astrophyllite
Astrophyllite is a very rare, brown to golden-yellow hydrous potassium iron titanium silicate mineral.
Larimar
Larimar, also called "Stefilia's Stone", is a rare blue variety of the silicate mineral pectolite found only in the Dominican Republic, in the Caribbean.
Hornblende
Hornblende is a complex inosilicate series of minerals (ferrohornblende – magnesiohornblende).
Sapphirine
Sapphirine is a rare mineral, a silicate of magnesium and aluminium with the chemical formula (Mg,Al)8(Al,Si)6O20 (with iron as a major impurity).
Spodumene
Spodumene is a pyroxene mineral consisting of lithium aluminium inosilicate, LiAl(SiO3)2, and is a source of lithium.
Babingtonite
Babingtonite is a calcium iron manganese inosilicate mineral with the formula Ca2(Fe,Mn)FeSi5O14(OH).
Pyroxferroite
Pyroxferroite (Fe2+,Ca)SiO3 is a single chain inosilicate.
Carpholite
Carpholite is a manganese silicate mineral with formula Mn2+Al2Si2O6(OH)4.
Lorenzenite
Lorenzenite is a rare sodium titanium silicate mineral with the formula Na2Ti2Si2O9 It is an orthorhombic mineral, variously found as colorless, grey, pinkish, or brown crystals.
Agrellite
Agrellite (NaCa2Si4O10F) is a mineral found in Quebec, Canada.
Yuksporite
Yuksporite is a rare inosilicate mineral with double width, unbranched chains, and the complicated chemical formula K4(Ca,Na)14Sr2Mn(Ti,Nb)4(O,OH)4(Si6O17)2(Si2O7)3(H2O,OH)3.
Bustamite
Bustamite is a calcium manganese inosilicate (chain silicate) and a member of the wollastonite group.
Charoite
Charoite (K(Ca,Na)2Si4O10(OH,F)·H2O) is a rare silicate mineral, first described in 1978 and named for the Chara River.
Prehnite
Prehnite is an inosilicate of calcium and aluminium with the formula: Ca2Al(AlSi3O10)(OH)2.
Enstatite
Enstatite is a mineral; the magnesium endmember of the pyroxene silicate mineral series enstatite (MgSiO3) - ferrosilite (FeSiO3).
Hypersthene
Hypersthene is a common rock-forming inosilicate mineral belonging to the group of orthorhombic pyroxenes.
Fassaite
Fassaite is a variety of augite with a very low iron content, Ca(Mg,Fe,Al)(Si,Al)2O6.
Holmquistite
Holmquistite is a lithium magnesium aluminium inosilicate mineral with chemical formula: Li2(Mg,Fe2+)3Al2Si8O22(OH)2.
Jimthompsonite
Jimthompsonite is a magnesium iron silicate mineral with formula: (Mg,Fe2+)5Si6O16(OH)2.
Jonesite
Jonesite is a mineral with the chemical formula Ba4(K,Na)2[Ti4Al2Si10O36]*6H2O.
Aerinite
Aerinite (Ca4(Al,Fe,Mg)10Si12O35(OH)12CO3·12H2O) is a bluish-purple inosilicate mineral.
Khmaralite
The mineral khmaralite is a beryllium bearing mineral of the sapphirine group with a chemical formula of (Mg,Al,Fe)16[(Al,Si,Be)12O36]O40.
Laplandite-(Ce)
Laplandite has a general formula of Na4CeTiPO4Si7O18•5H2O, and is found primarily in igneous rocks.
Nambulite
Nambulite is a lithium bearing manganese silicate mineral with formula: (Li,Na)Mn4Si5O14(OH).
Kuratite
Kuratite, named for Dr.
Zorite
Zorite is a silicate mineral with the chemical formula of Na2Ti(Si,Al)3O9·nH2O.
Omphacite
Omphacite is a member of the pyroxene group of silicate minerals with formula: (Ca, Na)(Mg, Fe2+, Al)Si2O6.
Jennite
Jennite is a calcium silicate hydrate mineral of general chemical formula: Ca9Si6O18(OH)6·8H2O.
Leucophanite
Leucophanite is an inosilicate mineral with a complex composition, (Na,Ca)2BeSi2(O.OH.F)7.
Tschermakite
The endmember hornblende tschermakite (☐Ca2(Mg3Al2)(Si6Al2)O22(OH)2) is a calcium rich monoclinic amphibole mineral.
Plancheite
Plancheite is a hydrated copper silicate mineral with the formula Cu8Si8O22(OH)4•(H2O).
Alamosite
Alamosite (Pb12Si12O36) is a colorless silicate mineral named after the place where it was discovered, Álamos, Sonora, Mexico.
Serendibite
Serendibite is an extremely rare mineral and gem that was first discovered in 1902 in Sri Lanka by Dunil Palitha Gunasekera and named after Serendib, the old Arabic name for Sri Lanka.
Kanoite
Kanoite is a light pinkish brown silicate mineral that is found in metamorphic rocks.
Shattuckite
Shattuckite is a copper silicate hydroxide mineral with formula Cu5(SiO3)4(OH)2.
Brokenhillite
Brokenhillite (German: Brokenhillit Spanish: Brokenhillita) is an earth mineral that exists in small quantities.
Balangeroite
Balangeroite is found in one of the most important chrysotile mines in Europe, the Balangero Serpentinite.
Chesterite
Chesterite ((Mg,Fe)17Si20O54(OH)6) is a rare silicate mineral that can be compared to amphiboles, micas, and jimthompsonite.
Dorrite
Dorrite is a silicate mineral that is isostructural to the aenigmatite group.
Eveslogite
Eveslogite, ((Ca,K,Na,Sr,Ba)48[(Ti,Nb,Fe,Mn)12(OH)12Si48O144](F,OH,Cl)14), is a mineral found on Mt.
Frankamenite
Frankamenite is the fluorine-dominate variation of the rare mineral canasite with a general formula of K3Na3Ca5(Si12O30)[F,(OH)]4·(H2O).
Xonotlite
Xonotlite is a mineral with the chemical formula Ca6Si6O17(OH)2.
Tinaksite
Tinaksite (K2Na(Ca,Mn2+)2Ti[O|Si7O18(OH)]) is a mineral found in northern Russia.
Tobermorite
Tobermorite is a calcium silicate hydrate mineral with chemical formula: Ca5Si6O16(OH)2·4H2O or Ca5Si6(O,OH)18·5H2O.
Umbite
Umbite (K2(Zr,Ti)Si3O9·H2O) is a potassium zirconosilicate mineral found in northern Russia.
Vanadiocarpholite
Vanadiocarpholite (Mn+2V+3AlSi2O6(OH)4) is straw yellow to brown silicate mineral.
Vlasovite
Vlasovite is a rare inosilicate (chain silicate) mineral with sodium and zirconium, with the chemical formula Na2ZrSi4O11.
Zircophyllite
Zircophyllite is a complex mineral, formula (K,Na)3(Mn,Fe)7(Zr,Ti,Nb)2Si8O24(OH,F)7.
Narsarsukite
Narsarsukite is a rare silicate mineral with chemical formula Na2(Ti,Fe3+)Si4(O,F)11 or Na4(Ti,Fe)4[Si8O20](O,OH,F)4.
Zektzerite
The mineral zektzerite is a member of the tuhualite group and was first found in 1966 by Seattle mineralogist Benjamin Bartlett "Bart" Cannon.
Grunerite
Grunerite is a mineral of the amphibole group of minerals with formula Fe7Si8O22(OH)2.
Pectolite
Pectolite is a white to gray mineral, NaCa2Si3O8(OH), sodium calcium inosilicate hydroxide.
Wollastonite
Wollastonite is a calcium inosilicate mineral (CaSiO3) that may contain small amounts of iron, magnesium, and manganese substituting for calcium.