Pyrite
Iron Pyrite (FeS2)
mineral
Category
Sedimentary And Igneous (Mixed)
Browse sedimentary and igneous (mixed) specimens identified by the Rock Identifier community.
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Carnelian Agate
Cryptocrystalline Quartz (SiO2) with Iron Oxide impurities
mineral
Quartz (or Chert/Flint)
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss
metamorphic
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Chalcedony (Agate)
Cryptocrystalline Quartz (SiO2)
sedimentary
Clear Quartz / Rock Crystal
Silicon Dioxide (SiO2)
mineral
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Crystalline Silicon Dioxide (SiO2)
gemstone
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Blue Apatite
Calcium Fluorophosphate - Ca5(PO4)3F
mineral
Zoisite with Hornblende
Zoisite (Ca2Al3(SiO4)3(OH)) with Amphibole inclusions
metamorphic
Chalcedony (specifically Agate and Carnelian variety)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Chalcedony (Agate and Carnelian varieties)
Silicon Dioxide (SiO2)
mineral
Yellow Chalcedony
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Apatite group (Ca5(PO4)3(F,Cl,OH))
mineral
Blue Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Magnetite (Iron Ore)
Magnetite (Fe3O4)
mineral
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Crystalline variety)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz Mineral
Silicon Dioxide (SiO2)
mineral
Hematite
Hematite (Α-Fe2O3)
mineral
Chalcedony (Agate/Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Pyrite in Matrix (often with Chalcopyrite)
Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Potassium Feldspar and Quartz
KAlSi3O8 (Potassium Feldspar) and SiO2 (Quartz)
mineral
Calcite (Optical or Clear Calcite)
Calcium Carbonate (CaCO3)
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz
Silicon dioxide (SiO2)
Mineral
Quartz Fragment
Silicon Dioxide (SiO2)
mineral
Pyrite in Matrix
Iron Disulfide (FeS2)
mineral
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Dalmatian Stone (Dalmatian Jasper)
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Dalmatian Stone
Dalmatian Jasper (Peralkaline Quartz-Feldspar Rock)
igneous