Biotite (Black Mica)
K(Mg,Fe)3AlSi3O10(OH,F)2
Category
Browse metamorphic specimens identified by the Rock Identifier community.
Biotite (Black Mica)
K(Mg,Fe)3AlSi3O10(OH,F)2
Muscovite Schist
Mica Schist (KAl2(AlSi3O10)(OH)2 matrix)
Biotite Schist
Biotite Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)
Faceted Clear Quartz or Diamond Simulant
Silicon Dioxide (SiO2) if Quartz or Cubic Zirconia (ZrO2) if Synthetic
Spessartine Garnet in Quartz/Feldspar Pegmatite
Spessartine (Mn3Al2(SiO4)3) in Quartz (SiO2) and Feldspar
Pyrite
Iron Disulfide (FeS2)
Galena
Lead(II) sulfide (PbS)
Quartz with inclusions
SiO2
Serpentine
Antigorite, Lizardite, or Chrysotile (Mg, Fe)3Si2O5(OH)4
Quartz Vein in Metamorphic Rock
Silicon Dioxide (SiO2) within Metasedimentary host
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
Pyrite (Fools Gold)
Iron Disulfide (FeS2)
Serpentinite
Serpentine group minerals ((Mg, Fe)3Si2O5(OH)4)
Quartz (Milky/Snow)
Silicon Dioxide (SiO2)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Pyrite in Matrix
Iron Disulfide (FeS2)
Vesuvianite (Idocrase)
Ca19(Al, Mg, Fe)13(SiO4)10(Si2O7)4(OH, F, O)10
Blue Apatite
Fluoroapatite (Ca5(PO4)3F)
Hypersthene
Hypersthene (Magnesium Iron Silicate - (Mg,Fe)SiO3)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Sodalite
Na8(Al6Si6O24)Cl2
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz Vein in Pelite (Metamorphic Rock)
Hydrothermal Quartz Veining in Metasedimentary Rock (SiO2)
Staurolite (Fairy Cross)
Staurolite (Fe2+2Al9Si4O23(OH))
Epidote in Matrix
Epidote; Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
Mica Schist
Mica Schist (primarily composed of Muscovite/Biotite)
Staurolite (Fairy Cross)
Staurolite (Fe2+2Al9Si4O23(OH))
Serpentine (Infinite Stone)
Serpentinite (Hydrous magnesium iron silicate)
Schist (Micaceous)
Mica Schist (predominantly Muscovite or Biotite)
Pyritic Gneiss
Metamorphic Gneiss with Pyrite inclusions
Epidote in Quartz (Unakite-like specimen)
Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)) in Quartz (SiO2)
Mica Schist
Schist (muscovite-biotite schist)
Gneiss (foliated metamorphic rock)
Gneiss
Quartz-veined Metamorphic Rock
Quartz Vein in Phyllite or Schist (SiO2 in Silicate Matrix)
Quartzite (clastic/metamorphic subtype)
Quartzite (primarily Silicon Dioxide, SiO2)
Folded Schist / Gneiss (Metamorphic Rock)
Regional Metaphoric Folded Outcrop (predominantly Schist/Gneiss)
Milky Quartz
Silicon Dioxide (SiO2)
Quartzite
Quartzite (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz (Raw and Water-worn)
Silicon Dioxide (SiO2)
Quartzite
Quartzite (SiO2)