Calcite
Calcite (Calcium Carbonate, CaCO3)
Category
Browse igneous and sedimentary specimens identified by the Rock Identifier community.
Calcite
Calcite (Calcium Carbonate, CaCO3)
Magnetite
Magnetite (Fe3O4)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Quartz Cluster (Likely Ferruginous)
Silicon Dioxide (SiO2)
Quartz (Milky/Common Quartz)
Silicon Dioxide (SiO2)
Quartz (Rock Crystal)
Quartz (SiO₂ - Silicon Dioxide)
Pyrite
Iron Sulfide (FeS2)
Milky Quartz
Silicon Dioxide (SiO2)
Pyrite in Matrix (Fool's Gold)
Iron Sulfide (FeS2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Magnetite
Magnetite (Fe3O4)
Leopard Skin Jasper
Orbicular Jasper (Silicon Dioxide, SiO2)
Magnetite
Magnetite (Fe3O4)
Pyrite
Iron Sulfide (FeS2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz (Smoky/Milky variety)
Silicon Dioxide (SiO2)
Druzy Quartz
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Magnetite / Ironstone
Iron(II,III) oxide (Fe3O4)
Magnetite (Iron Ore)
Magnetite (Fe3O4)
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
Magnetite / Hematite mix (Iron Ore)
Fe3O4 (Magnetite) / Fe2O3 (Hematite)
Magnetite (Lodestone)
Magnetite (Fe3O4)
Quartz (Milky/Snow)
Silicon Dioxide (SiO2)
Blue Apatite
Fluoroapatite (Ca5(PO4)3F)
Hematite
Iron(III) oxide (Fe2O3)
Biotite (Black Mica)
Biotite - K(Mg,Fe)3(AlSi3O10)(F,OH)2
Pyrite
Iron Sulfide (FeS2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Magnetite (Iron Ore)
Magnetite (Fe3O4)
Magnetite
Magnetite (Fe3O4)
Dalmatian Stone
Dalmatian Jasper (a trade name for an igneous microcrystalline rock composed mostly of feldspar, quartz, and dravite)
Dalmatian Jasper
Dalmatian Stone (a microcrystalline quartz and feldspar rock with arfvedsonite)
Magnetite (Iron Ore)
Iron(II,III) oxide (Fe3O4)
Pyrite
Iron Sulfide (FeS2)
Orange Calcite
Calcium Carbonate (CaCO3)
Green Opal
Hydrated Silica (SiO2·nH2O)
Dalmation Stone
Peralkaline Rock (SiO2 with Arfvedsonite)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)