White Quartz
Silicon Dioxide (SiO2)
mineral
Category
Igneous And Metamorphic
Browse igneous and metamorphic specimens identified by the Rock Identifier community.
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Potassium Feldspar (Orthoclase / Microcline)
KAlSi3O8
mineral
Pebble Gravel Mix (Quartzite, Basalt, Chert)
Alluvial River Gravel / Aggregate Clasts
sedimentary
Rough Quartz (Milky / Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Magnetite / Iron-Rich Basalt
Magnetite bearing Mafic Rock (Fe3O4)
igneous
Magnetite or Hematite Nodule
Iron Oxide (Fe3O4 or Fe2O3)
mineral
Chalcopyrite (Peacock Ore)
Copper Iron Sulfide (CuFeS2)
mineral
Rainbow Moonstone
White Labradorite (Feldspar variety)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Massive White Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite
Na8(Al6Si6O24)Cl2
mineral
Garnet
Pyrope or Almandine (X3Y2(SiO4)3)
mineral
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky or Yellow variety)
Silicon Dioxide (SiO2)
mineral
Aventurine
Aventurine Quartz (SiO2)
mineral
Sunstone
Feldspar (variety Oligoclase or Labradorite), (Ca,Na)(Al,Si)4O8
mineral
Yellow Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Potassium Feldspar
Orthoclase (KAlSi3O8)
mineral
Pyrite (on the right) and Magnetite or Hematite (on the left)
Iron Sulfide (FeS2) and Iron Oxide (Fe3O4 or Fe2O3)
mineral
Greenschist
Greenschist (Chlorite-actinolite schist)
metamorphic
Gneiss
Metamorphic Gneiss
metamorphic
Epidote
Epidote (Ca2(Al2,Fe3+)AlSi3O12(OH))
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Dumortierite Quartz
Dumortierite-bearing Quartz (SiO2 with Al7BO3(SiO4)3O3)
mineral
Tumbled Ruby
Corundum (Al2O3:Cr)
gemstone
Garnet Gneiss
Garnetiferous quartzo-feldspathic gneiss
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral
Magnetite (Lodestone)
Iron(II,III) oxide (Fe3O4)
mineral
Gneissic Schist
Gneiss-schist (Metamorphic rock)
metamorphic
Almandine Garnet
Almandine - Fe3Al2(SiO4)3
mineral
Garnet Amphibolite (or Garnet Gneiss)
Garnet amphibolite / Garnet-bearing metamorphic rock
metamorphic
Garnet in Matrix
Almandine or Pyrope Garnet (X3Y2(SiO4)3) in Schist or Eclogite matrix
metamorphic
Pyrite
Iron Pyrite (FeS₂)
Mineral
Magnetite
Magnetite (Iron(II,III) oxide, Fe3O4)
mineral
Epidote
Epidote (Ca2(Al, Fe)3(SiO4)3(OH))
mineral
Migmatite
Migmatite (Mixed metamorphic-igneous rock)
metamorphic
Specular Hematite (Specularite)
Iron(III) oxide (Fe2O3)
mineral