Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Category
Igneous, Metamorphic, Sedimentary
Browse igneous, metamorphic, sedimentary specimens identified by the Rock Identifier community.
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Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Quartz (Clear/White)
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
Mineral
Feldspar
Potassium Feldspar (KAlSi3O8)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Hematite (Tumbled)
Iron(III) oxide (Fe2O3)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Milky or Cloudy Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Biotite on Quartz
Biotite (K(Mg,Fe)3AlSi3O10(F,OH)2) and Quartz (SiO2)
mineral
Gneiss
Feldspathic biotite gneiss; a high-grade metamorphic rock composed mainly of quartz, feldspar, and mica
metamorphic
Banded Gneiss
Gneiss (SiO2-rich metamorphic rock)
metamorphic
Banded Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss (High-grade metamorphic rock)
metamorphic
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Gneiss
Gneiss
metamorphic
Banded Gneiss (with Quartz Vein)
Gneiss (SiO2 and varied Silicates)
metamorphic
River Cobble (Salt and Pepper Gneiss)
Gneiss (High-grade regional metamorphic rock)
metamorphic
Gneiss with Orthoclase Feldspar
Gneissic Metamorphic Rock with K-Feldspar inclusions
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss (High-grade regional metamorphic rock)
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss (specifically Granitic Gneiss)
Gneiss
metamorphic
Gneiss (Metamorphic Rock)
Gneiss
metamorphic
Granite Gneiss River Rock
Gneiss
Metamorphic
Gneiss (specifically Granite Gneiss)
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss
Gneiss (High-grade Metamorphic Rock)
metamorphic
Gneiss
Gneiss
metamorphic
Gneiss (Banded Gneiss)
Gneiss
metamorphic
Gneiss
High-grade metamorphic rock (Gneiss)
metamorphic
Granitic Gneiss Pebble
Gneiss (felsic metamorphic rock)
metamorphic
Pink Quartz
Silicon Dioxide (SiO2)
mineral
Quartz with Epidote
Silicon dioxide (SiO2) with Calcium aluminum iron silicate (Ca2Al2(Fe3+;Al)(SiO4)(Si2O7)O(OH))
mineral
Banded gneiss pebble
Gneiss, commonly quartz–feldspar–mica gneiss
metamorphic
Gneiss
Banded Gneiss
metamorphic
Garnet-Bearing Gneiss
Garnetiferous Feldspathic Gneiss
metamorphic