Calcite
Calcium Carbonate (CaCO3)
Category
Browse igneous, sedimentary, and metamorphic mix specimens identified by the Rock Identifier community.
Calcite
Calcium Carbonate (CaCO3)
Quartz
Silicon Dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F
Milky Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz (Milk/Citrine variety)
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
Quartz in Matrix
Silicon Dioxide (SiO2)
Hematite
Iron(III) oxide (Fe2O3)
Peacock Ore (Chalcopyrite)
Chalcopyrite (CuFeS2)
Blue Calcite
Calcite (CaCO3)
Clear Quartz Crystal
Quartz (Silicon Dioxide - SiO2)
Epidote
Epidote (Ca2(Al,Fe)3(SiO4)3(OH))
Gneiss
Metamorphic Gneiss (High-grade regional metamorphism)
Quartz with Mica inclusions (likely Schist or Gneiss host)
Silicon Dioxide (SiO2) with Phyllosilicates (KAl2(AlSi3O10)(OH)2)
Gneiss with Quartz/Feldspar Vein
Quartz-Feldspathic Gneiss
Banded Gneiss
Gneiss
Gneiss (Schistose)
Gneiss
Gneiss
Gneiss
Pink Granite Gneiss
Granitic Gneiss
Ruby Zoisite
Anyolite (Ca2Al3(SiO4)3(OH) + Al2O3:Cr)
Gneiss (Banded Gneiss)
Gneiss
Gneiss
Gneiss
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
Gneiss
Gneiss (High-grade metamorphic rock)
Granite Gneiss
Granitic Gneiss
Gneiss
Gneiss (High-grade metamorphic rock)
Gneiss
Gneiss
Gneiss (specifically Banded Gneiss)
Gneiss
Gneiss (Cobble)
Gneiss
Gneiss
Gneiss (High-grade metamorphic rock)
Banded Gneiss
Gneiss (Metamorphic high-grade, predominantly SiO2, Al2O3, K2O, Na2O)
Gneiss (specifically Micaceous Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
Graphite
Graphite (Chemical Formula: C)
Gneiss
Gneiss (high-grade metamorphic rock typically composed of quartz, feldspar, and mica)
Banded Gneiss
Gneiss (Metamorphic Rock)
Clear Quartz
Silicon Dioxide (SiO2)
Pyrite (on host rock)
Iron Sulfide (FeS2)
Pyrite
Iron Disulfide (FeS2)