Clear Quartz
Silicon Dioxide (SiO2)
Category
Browse sedimentary or metamorphic (base substrate) specimens identified by the Rock Identifier community.
Clear Quartz
Silicon Dioxide (SiO2)
Quartz Crystal
Silicon Dioxide (SiO2)
Hematite (likely Botryoidal or Specularite variant)
Iron(III) oxide (Fe2O3)
Galena
Lead(II) sulfide (PbS)
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Quartz (Grain)
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Red Jasper
Silicon Dioxide (SiO2) with Hematite impurities
Clear Quartz
Silicon dioxide (SiO2)
Quartz (Smoky/Grey variety)
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)
Black Onyx
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Hematite Nodule
Hematite (Fe2O3)
Pyrite in Quartz
Iron Disulfide (FeS2) in Silicon Dioxide (SiO2)
Bornite
Bornite (Cu5FeS4)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Quartz
Silicon Dioxide (SiO2)
Pyrite (locally known as Fool's Gold)
Iron Sulfide (FeS2)
Pyrite
Iron Disulfide (FeS2)
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
Blue Apatite
Apatite-(CaF), Ca5(PO4)3F
Clear Quartz
Silicon Dioxide (SiO2)
Calcite
Calcite (Calcium Carbonate, CaCO3)
Clear Quartz
Silicon Dioxide (SiO2)
Pyrite in Matrix (Fool's Gold)
Iron Disulfide (FeS2)
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Quartz (Milky/Common Quartz)
Silicon Dioxide (SiO2)
Quartz Crystal Point
Silicon Dioxide (SiO2)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Quartz
Silicon Dioxide (SiO2)
Clear Quartz Crystal
Quartz (Silicon Dioxide, SiO2)