Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Category
Browse sedimentary or metamorphic specimens identified by the Rock Identifier community.
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Rhodochrosite
Manganese carbonate (MnCO3)
Orange Calcite
Calcium Carbonate (CaCO3)
Ferruginous Quartz
Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)
Quartz (Milky/Vein Quartz)
Silicon Dioxide (SiO2)
Mixed Quartz Bracelet (Rose Quartz and Larimar-colored beads)
Silicon Dioxide (SiO2) with various inclusions
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Clear Quartz Crystal
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Magnetic Hematite (Man-made)
Iron Oxide (Fe2O3) with Barium-Strontium Ferrite
Hematite
Iron(III) oxide (Fe2O3)
White Jade / White Chalcedony
Nephrite Jade (Ca2(Mg,Fe)5Si8O22(OH)2) or Chalcedony (SiO2)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium and/or Vanadium impurities
Quartz (Milky or Clear Quartz fragment)
Silicon Dioxide (SiO2)
Pyrite (on Quartz/Host Rock)
Iron Sulfide (FeS₂)
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F (Calcium Fluorophosphate)
Quartz (Milky/Smoky variety on matrix)
Silicon Dioxide (SiO2)
Schist
Schist (various mineralogical compositions including mica, chlorite, talc, etc.)
Kyanite
Kyanite (Al2SiO5)
Blue Dumortierite in Quartz
Al7(BO3)(SiO4)3O3 (Dumortierite)
Epidote
Epidote - Ca2(Al,Fe)3(SiO4)3(OH)
Pebble
Clast (specifically a granule or small pebble)
Gneiss
Gneiss
Jasper with Epidote Vein
Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate (Ca2(Al,Fe)3(SiO4)3(OH))
Banded Rock (likely Quartz-rich)
Uncertain, likely a Metamorphic Rock (e.g., Gneiss or Schist) with prominent Quartz and other minerals
Tourmaline (likely Schorl)
Tourmaline Group Mineral (e.g., Schorl for black varieties); (Na,Ca)(Li,Mg,Fe,Mn,Al)3Al6(BO3)3Si6O18(OH)4
Pyrite
Iron Disulfide (FeS2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
Quartz (Milky or Rough Variety)
Silicon Dioxide (SiO2)
Almandine Garnet
Almandine (Fe3Al2(SiO4)3)
Blue Apatite
Apatite, Ca5(PO4)3(F,Cl,OH)
Magnetite
Magnetite (Fe3O4)
Pyrite
Iron Disulfide (FeS2)
Milky Quartz
Silicon dioxide (SiO2)
Orange Calcite
Calcite (CaCO3)
Pyrite
Iron Disulfide (FeS2)
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Brecciated Jasper or Chert
SiO2