Clear Quartz
Silicon Dioxide (SiO2)
Category
Browse sedimentary or igneous specimens identified by the Rock Identifier community.
Clear Quartz
Silicon Dioxide (SiO2)
Quartz (likely Rose or Milky Quartz)
Silicon Dioxide (SiO2)
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Orange Calcite
Calcium Carbonate (CaCO3)
Botryoidal Chalcedony
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz (Milky/Clear Fragment)
Silicon Dioxide (SiO2)
Chalcedony (Agate/Chert)
Silicon Dioxide (SiO2)
Biotite Schist
Biotite Gneiss/Schist (approximate formula K(Mg,Fe)3AlSi3O10(OH)2)
Clear Quartz
Silicon Dioxide (SiO2)
Gneiss
Gneiss
Milky Quartz
Silicon Dioxide (SiO2)
Dalmatian Stone (often called Dalmatian Jasper)
Peralkaline Quartz-Feldspar Rock with Arfvedsonite (formerly believed to be Jasper)
Quartz (likely a form of massive or vein quartz)
Quartz (SiO₂)
Quartz (likely milky/rose quartz variety)
Quartz (SiO2 - Silicon Dioxide)
Rose Quartz
Silicon dioxide (SiO2)
Magnetite
Magnetite (Fe3O4)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Dalmatian Stone (commonly called Dalmatian Jasper)
Peralkaline Rock (mixed Feldspar, Quartz, and Arfvedsonite)
Pyrite
Iron Disulfide (FeS2)
Green Schist
Greenschist (Chlorite Schist)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz Crystal
Silicon Dioxide (SiO2)
Hematite (likely Botryoidal or Specularite variant)
Iron(III) oxide (Fe2O3)
Carnelian
Carnelian (variety of Chalcedony, SiO2)
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Hematite
Hematite (Iron(III) oxide, Fe2O3)
Chalcedony (Agate/Carnelian variety)
Cryptocrystalline Quartz (SiO2)
Pyrite
Iron Sulfide (FeS2)
Quartz (Grain)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon dioxide (SiO2)
Quartz (Smoky/Grey variety)
Silicon Dioxide (SiO2)
Chalcedony (specifically Common Opal or Agate variant)
Silicon Dioxide (SiO2)
Feldspar (specifically Orthoclase or Plagioclase)
Potassium Aluminum Silicate (KAlSi3O8) or Sodium/Calcium Aluminum Silicate
Quartz (Milky/Sugar variety)
Silicon Dioxide (SiO2)
Clear Quartz Crystal
Silicon Dioxide (SiO2)
Blue Apatite
Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))
Clear Quartz
SiO2 (Silicon Dioxide)
Clear Quartz
Silicon Dioxide (SiO2)
Greenschist
Chlorite schist