Minerals Flashcards
Topaz
Nesosilicate
Al₂SiO₄(F,OH)₂
Staurolite
Nesosilicate
Fe²⁺₂Al₉O₆(SiO₄)₄(O,OH)₂
Andalusite
Nesosilicate
Al₂SiO₅
CN 5,6 (high T low P)
Sillimanite
Nesosilicate
Al₂SiO₅
CN 4,6 (low T low P)
Kyanite
Nesosilicate
Al₂SiO₅
CN 6 (high P)
What 3 minerals have the formula Al₂SiO₅ ?
Andalusite, sillimanite, kyanite
Olivine
(Mg,Fe)₂SiO₄
Garnet
Nesosilicate
X₃Y₂(SiO₄)₃
Where X is Mg Fe Mn Ca
Y is Al Fe Cr
Titanite
Nesosilicate
CaTiSiO₅
Zircon
Nesosilicate
ZrSiO₄
Allanite
Sorosilicate
A₂M₃(SiO₄)₃(OH)
Where A is Na Ca Ce Th Y La (often rare earth)
Where M is Mg Mn Al Fe³⁺
Piemontite
Sorosilicate, epidote group
Ca₂(Al,Mn³⁺,Fe³⁺)₃(SiO₄)(SiO₇)O(OH)
Monoclinic
Zoisite
Sorosilicate, epidote group
Ca₂Al₃(SiO₄)(Si₂O₇)O(OH)
Orthorhombic
Clinoizoisite
Sorosilicate, epidote group
Ca₂Al₃(SiO4)(Si₂O₇)O(OH)
Monoclinic prismatic
Epidote
Sorosilicate
Ca₂(Al Fe)₃(SiO₄)(Si₂O₇)O(OH) alt. Ca₂(Al Fe)₃(SiO₄)₃(OH)
Monoclinic
Vesuvianite
Sorosilicate
Ca₁₀Mg₂Al₄(SiO₄)₅(Si₂O₇)₂(OH)₄
Tetragonal
Cordierite
Cyclosilicate
(Mg Fe)₂Mg₂Al₄Si₅O₁₈
Orthorhombic
Beryl
Cyclosilicate
Be₃Al₂(SiO₃)₆
Hexagonal
Tourmaline
Cyclosilicate
(Ca,Na)(Li,Mg,Al)(Al,Fe,Mn)6(BO3)3Si6O18(OH)4
(Borate group is identifier)
Trigonal
Spodumene
Inosilicate, pyroxene (single chain)
LiAlSi₂O₆
Monoclinic
Aegerine (aka acmite)
Inosilicate, pyroxene (single chain)
NaFeSi₂O₆
Monoclinic
Hedenbergite
Inosilicate, pyroxene (single chain)
CaFeSi₂O₆
Monoclinic
Jadeite
Inosilicate, pyroxene, single chain
NaAlSi2O6
Diopside
Inosilicate, pyroxene (single chain)
CaMgSi₂O₆
Monoclinic
Augite
Inosilicate, pyroxene (single chain)
(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)₂O6
Monoclinic
Enstatite (hypersthene)
Inosilicate, pyroxene (single chain)
Enstatite MgSiO₃
Hypersthene (Mg,Fe)SiO3
Orthorhombic
Wollastonite
Inosilicate, pyroxenoid (single chain)
CaSiO₃
Triclinic
Rhodonite
Inosilicate, pyroxenoid (single chain)
MnSiO₃
Triclinic
Actinolite
Inosilicate, amphibole (double chain)
Ca₂(Mg,Fe)₅Si₈O₂₂(OH)₂
Monoclinic
Tremolite
Inosilicate, amphibole (double chain)
Ca₂Mg₅Si₈O₂₂(OH)₂
Monoclinic
Anthophyllite/ cummingtonite-grunerite
Inosilicate, amphibole (double chain)
(Mg,Fe)₇Si₈O₂₂(OH)₂
Orthorhombic
Anthophyllite is Mg₇ and grunerite is Fe₇ in the solid solution series. Both are monoclinic.
Hornblende
Inosilicate, amphibole (double chain)
Ca₂(Mg,Fe,Al)₅(Al,Si)₈O₂₂(OH)₂
Monoclinic
Arfvedsonite
Inosilicate, amphibole (double chain)
NaNa₂Fe²⁺₄Fe³⁺Si₈O₂₂(OH)₂
Monoclinic
Riebeckite
Inosilicate, amphibole (double chain)
Na₂Fe²⁺₃Fe³⁺₂Si₈O₂₂(OH)₂
Monoclinic
Glaucophane
Inosilicate, amphibole (double chain)
Na₂(Mg₃Al₂)Si₈O₂₂(OH)₂
Monoclinic
Talc
Tectosilicate, phyllosilicate, clay group
Mg₃Si₄O₁₀(OH)₂
Monoclinic
Pyrophyllite
Tectosilicate, phyllosilicate, clay group
Al₂Si₄O₁₀(OH)₂
Monoclinic
Chamosite
Tectosilicate, phyllosilicate
Fe²⁺₅Al(AlSi₃O₁₀)(OH)₈ iron rich end of solid solution with clinochlore
Monoclinic
Clinochlore
Tectosilicate, phyllosilicate
Mg₅Al(AlSi₃O₁₀)(OH)₈ - Mg rich end of solid solution with chamosite
Monoclinic
Margarite
Tectosilicate, phyllosilicate, mica group
CaAl₂(Al₂Si₂)O₁₀(OH)₂
Monoclinic
Fuchsite
Tectosilicate, phyllosilicate
K(Al,Cr)₂(AlSi₃)O₁₀(OH)₂
Monoclinic
Paragonite
Tectosilicate, phyllosilicate
NaAl₂(AlSi₃)O₁₀(OH)₂
Monoclinic
Muscovite
Tectosilicate, phyllosilicate, mica group
KAl₂(AlSi₃)O₁₀(OH)₂
Monoclinic
Biotite (phlogopite)
Tectosilicate, phyllosilicate, mica group
K(Mg,Fe)₃(AlSi₃)O₁₀(OH)₂
Mg rich end member of solid solution
Monoclinic
Biotite, (annite)
Tectosilicate, phyllosilicate, mica group
K(Mg,Fe)₃(AlSi₃)O₁₀(OH)₂
Fe rich end member of the solid solution
Monoclinic
Serpentine
Tectosilicate, phyllosilicate
Mg₃Si₂O₅(OH)₄
Monoclinic
Sepiolite
Tectosilicate, phyllosilicate, clay group
Mg₄Si₆O₁₅(OH)₂•6H₂O
Orthorhombic
Illite
Tectosilicate, phyllosilicate, clay group
(K,H₃O)(Al,Mg,Fe)₂(Si,Al)₄O₁₀[(OH₂,H₂O)]
Monoclinic
Vermiculite
Tectosilicate, phyllosilicate, clay group
(Mg²⁺,Fe²⁺,Fe³⁺)₃(Al,Si)₄O₁₀•(OH)₂•4H₂O
Montmorillonite
Tectosilicate, phyllosilicate, clay group
(Na,Ca).₃₃(Al,Mg)₂(Si₄O₁₀)(OH)₂•nH₂O
Monoclinic
Kaolinite
Tectosilicate, phyllosilicate, clay group
Al₂Si₂O₅(OH)₄
Triclinic
Plagioclase
Tectosilicate, feldspar group
Solid solution: NaAlSi₃O₈ albite to CaAl₂Si₂O₈ anorthite
Triclinic
Albite
Tectosilicate, feldspar group
NaAlSi₃O₈
Triclinic
Sanidine
Tectosilicate, feldspar group
K(AlSi₃O₈)
Monoclinic
Sanidine forms at high temps. Lower temp forms are orthoclase and microcline
Jasper
Tectosilicate, quartz group
SiO₂ microscopically grained
Chert
Tectosilicate, quartz group
SiO₂ microcrystalline
Chalcedony
Tectosilicate, quartz group
SiO₂
Cryptocrystalline form, very fine intergrowths of quartz and moganite
Quartz
Tectosilicate
SiO₂
Trigonal
Pyrope
Mg3Al2(Si3O12)
nesosilicate, garnet
Almandine
Fe3Al2(Si3O12)
nesosilicate, garnet
Andradine
Ca3Fe2(Si3O12)
nesosilicate, garnet
Spessartine
Mn3Al2(Si3O12)
nesosilicate, garnet
Grossular
Ca3Al2(Si3O12)
nesosilicate, garnet
Uvarovite
Ca3Cr2(Si3O12)
nesosilicate, garnet
Chrysocolla
(Cu,Al)2 H2Si12O5 (OH)4 + nH2O