Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite
mineral
Category
Igneous And Metamorphic
Browse igneous and metamorphic specimens identified by the Rock Identifier community.
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Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chalcopyrite in Matrix
Chalcopyrite (CuFeS2)
mineral
Quartz (Gray/Smoky Varieties)
Silicon Dioxide (SiO2)
mineral
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
mineral
Schist
Mica Schist
metamorphic
Granite (with Almandine Garnet inclusions)
Granite composed primarily of Quartz (SiO2), K-Feldspar (KAlSi3O8), and Almandine Garnet (Fe3Al2(SiO4)3)
igneous
Rhodonite
Rhodonite (MnSiO3)
mineral
Quartz Vein / Quartzite Specimens
Silicon Dioxide (SiO2)
mineral
Almandine Garnet
Almandine, Fe3Al2(SiO4)3
mineral
Mica
Muscovite / Biotite (Phyllosilicate group)
mineral
Corundum (Sapphire/Ruby in Matrix)
Corundum (Al2O3)
mineral
Magnetite (Lodestone)
Magnetite (Fe3O4)
mineral
Muscovite
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Aventurine
Silicon Dioxide (SiO2) with inclusions
mineral
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
mineral
Muscovite Mica
Muscovite: KAl2(AlSi3O10)(OH)2
mineral
Biotite Schist
Biotite Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)
metamorphic
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Milky Quartz (Common Quartz)
Quartz (Silicon Dioxide, SiO2)
mineral
Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Gneiss
Foliated Metamorphic Rock
metamorphic
Greenstone / Greenschist
Chlorite schist / Epidiorite
metamorphic
Quartz
Silicon Dioxide (SiO2)
mineral
Schist
Mica Schist (Foliated Metamorphic Rock)
metamorphic
Greenschist
Chlorite schist
metamorphic
Green Schist
Greenschist (Chlorite Schist)
metamorphic
Mica (Muscovite)
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Garnet
Garnet Group (e.g., Almandine Fe3Al2(SiO4)3 or Pyrope Mg3Al2(SiO4)3)
mineral
Gneiss
Gneissic Metamorphic Rock
metamorphic
Greenschist
Greenschist (composed mainly of actinolite/tremolite, chlorite, and epidote)
metamorphic
Green Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Mineral (Variety of Quartz)
Phyllite (possibly low-grade greenish slate)
Foliated metamorphic rock composed mainly of very fine-grained quartz, mica, and chlorite; approximate composition varies and has no single fixed chemical formula
metamorphic
Pegmatite
Igneous Pegmatite
igneous
Granite
Felsic intrusive igneous rock
igneous
Magnetite
Magnetite (Fe3O4)
mineral
Epidote
Epidote (Ca2(Al, Fe)3(SiO4)3(OH))
mineral
Muscovite (Mica)
Muscovite - KAl2(AlSi3O10)(OH)2
Mineral
Garnet (specifically Almandine)
Almandine - Fe3Al2(SiO4)3
metamorphic
Small white mineral fragment
Indeterminate; possibly quartz, calcite, or feldspar
mineral
Quartz
Silicon Dioxide (SiO2)
mineral