Blue Quartz (Dumortierite Quartz)
Silicon Dioxide with Aluminum Borosilicate (SiO2 + AlAl6BSi3O18)
Category
Browse metamorphic mineral specimens identified by the Rock Identifier community.
Blue Quartz (Dumortierite Quartz)
Silicon Dioxide with Aluminum Borosilicate (SiO2 + AlAl6BSi3O18)
Blue Tiger's Eye
Silicified Riebeckite (SiO2)
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Orange Calcite
Calcium Carbonate (CaCO3)
Peacock Ore
Bornite (Cu5FeS4) or iridescent Chalcopyrite (CuFeS2)
Quartz with Iron Stains
Silicon Dioxide (SiO2) with FeOx inclusions
Greenschist (Chlorite Schist)
Greenschist (Metamorphic rock dominated by chlorite, actinolite, and epidote)
Gneiss (likely Granitic Gneiss)
Gneiss
Banded Gneiss
Gneiss (high-grade metamorphic silicate rock)
Pyrite
Iron Pyrite (FeS₂)
Green Aventurine
Quartz (Aventurine variety) - SiO₂ with Fuchsite inclusions
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
Garnet Schist
Almandine Garnet in Mica Schist
Biotite Schist
Biotite-rich Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)
Quartz (Milky and Smoky variety)
Silicon Dioxide (SiO2)
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
Turquoise and Hematite
CuAl6(PO4)4(OH)8·4H2O (Turquoise) and Fe2O3 (Hematite)
Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Quartz (Smoky/Milky Variety)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Slate
Foliated Metamorphic Slate
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Mica Schist
Foliated Metamorphic Rock (rich in Muscovite or Biotite)
Soapstone
Steatite (composed primarily of Talc, Mg3Si4O10(OH)2)
Blue Apatite
Apatite group (Ca5(PO4)3(F,Cl,OH))
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Hypersthene
Hypersthene (Magnesium Iron Silicate - (Mg,Fe)SiO3)
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Sodalite
Na8(Al6Si6O24)Cl2
Amazonite
Potassium Aluminum Silicate (KAlSi3O8)
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
Marble
Recrystallized Calcite (CaCO3) Rock
Biotite on Quartz Matrix
Biotite - K(Mg,Fe)3(AlSi3O10)(OH,F)2 with Quartz (SiO2)
Ruby Zoisite
Anyolite (Composition of Green Zoisite, Black Tschermakite, and Red Corundum)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Pyrite-rich Ore
Pyrite (FeS2) with secondary minerals
Garnet Schist
Almandine Garnet in Schist (X3Al2(SiO4)3)
Schist
Mica Schist
Schist
Mica Schist