Quartz
Silicon Dioxide (SiO2)
Category
Browse mixed (sedimentary, igneous, and metamorphic) specimens identified by the Rock Identifier community.
Quartz
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz (Milky or Clear fragment)
Silicon Dioxide (SiO2)
Quartz Crystal Fragment
Quartz (Silicon Dioxide, SiO2)
Quartz (Milky/Crystalline fragment)
Silicon Dioxide (SiO2)
Clear Quartz Crystal
Quartz (Silicon Dioxide - SiO2)
Quartz
Silicon dioxide (SiO2)
Quartz (Small Pebble)
Silicon Dioxide (SiO2)
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Quartz (Druzy)
Silicon Dioxide (SiO2)
Calcite
Calcite (Calcium Carbonate - CaCO3)
Quartz
Silicon dioxide (SiO2)
White Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Pyrite
Iron Sulfide (FeS2)
Quartz
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Pyrite in Matrix (likely Quartz or Schist matrix)
Iron Sulfide (FeS2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Quartz (Clear / Rock Crystal)
Silicon Dioxide (SiO2)
Apatite
Fluorapatite, Chlorapatite, and Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Rough Quartz (likely Rose or Smoky variant)
Silicon Dioxide (SiO2)
Quartz (Milky or Citrine-tinted)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Yellow Agate
Agate (Varietal form of Chalcedony/Quartz, SiO2)
Blue Apatite
Apatite (Ca5(PO4)3(F,Cl,OH))
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
White Zircon
Zircon (Zirconium silicate, ZrSiO4)
Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Pyrite in Quartz
Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
Moonstone
Orthoclase (KAlSi3O8), specifically the variety showing adularescence
Orange Quartz
Silicon Dioxide (SiO2) with iron oxide inclusions
Moonstone (Feldspar variety)
Orthoclase Feldspar (KAlSi3O8)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
Gneiss
Gneiss (High-grade Metamorphic Rock)
Granitic Gneiss
Gneiss (containing Potassium Feldspar and Quartz)
Gneiss
Gneiss