Granitoid (Granite/Gneiss mix)
Granite or Granitic Gneiss (Silicon dioxide SiO2 with Al, K, Na silicates)
igneous/metamorphic
Category
Metamorphic (Pseudo Igneous)
Browse metamorphic (pseudo igneous) specimens identified by the Rock Identifier community.
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Sodalite
Na8(Al6Si6O24)Cl2
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Muscovite Mica in Quartz
Potassium Aluminum Silicate Hydroxide (KAl2(AlSi3O10)(OH)2) and Silicon Dioxide (SiO2)
metamorphic
Chalcopyrite (Peacock Ore)
Copper Iron Sulfide (CuFeS2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Rainbow Hematite Ring
Iron(III) oxide (Fe2O3) with thin-film coating
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Garnet (Almandine)
Almandine Fe3Al2(SiO4)3
mineral
Rough Quartz
Silicon Dioxide (SiO2)
mineral
Citrine (Heat-treated Amethyst)
Silicon Dioxide (SiO2) with iron impurities
mineral
White Quartz
Silicon Dioxide (SiO2)
mineral
Green Aventurine
SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)
mineral
Yellow Quartz (Citrine or Iron-Stained 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
Biotite on Quartz
Biotite Mica (K(Mg,Fe)3AlSi3O10(F,OH)2)
mineral
Quartz / Iron-Stained Quartz
Silicon Dioxide (SiO2) with iron oxide inclusions/staining
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Moonstone (specifically White Moonstone/Adularia)
Potassium aluminum silicate ((K,Na)AlSi3O8)
mineral
Pyrite in Matrix (likely Quartz or Schist matrix)
Iron Sulfide (FeS2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Milky Quartz with Garnet/Hematite and Basalt
Silicon Dioxide (SiO2) with Almandine (Fe3Al2Si3O12) and Basalt
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Citrine
Silicon Dioxide (SiO₂)
mineral
Smoky Quartz
Quartz (Silicon Dioxide), Formula: SiO2
mineral
Sunstone
Aventurine Feldspar ((Ca,Na)(Al,Si)4O8)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Specular Hematite
Specularite (Iron(III) oxide, Fe2O3)
mineral
Citrine
Silicon dioxide (SiO2)
mineral
Citrine (Yellow Quartz)
Silicon Dioxide (SiO2)
Mineral
Quartz (Clear / Rock Crystal)
Silicon Dioxide (SiO2)
Mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (River Cobble)
Silicon Dioxide (SiO2)
mineral
Citrine
Quartz (Silicon Dioxide - SiO2)
mineral
Emerald
Beryl (Be3Al2(SiO3)6) with Chromium/Vanadium impurities
mineral