Quartz
Silicon Dioxide (SiO2)
mineral
Category
Igneous, Metamorphic, Sedimentary
Browse igneous, metamorphic, sedimentary specimens identified by the Rock Identifier community.
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Gneiss
Gneiss
metamorphic
White Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon Dioxide (Quartz variety), SiO2
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Quartz pebble / Quartzite
Silicon Dioxide (SiO2)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz (Raw / Unpolished)
Silicon Dioxide (SiO2)
mineral
Hematite
Iron Oxide (Fe2O3)
mineral
Hematite
Iron Oxide (Fe2O3)
mineral
Hematite
Iron Oxide (Fe2O3)
mineral
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Crystal Cluster
Silicon Dioxide (SiO2)
mineral
Magnetite (Lodestone variant potential)
Magnetite (Fe3O4)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Mixed River Pebbles
Clastic Sedimentary Alluvial Deposit / Polymictic Conglomerate Clasts
sedimentary
Rainbow Hematite Ring
Iron(III) oxide (Fe2O3) with thin-film coating
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Calcite
Calcite (Calcium Carbonate - CaCO3)
mineral
Quartz
Silicon dioxide (SiO2)
Mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite in Matrix (likely Quartz or Schist matrix)
Iron Sulfide (FeS2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Clear / Rock Crystal)
Silicon Dioxide (SiO2)
Mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Apatite
Fluorapatite, Chlorapatite, and Hydroxylapatite (Ca5(PO4)3(F,Cl,OH))
mineral