Smoky Quartz
Silicon Dioxide (SiO2)
Category
Browse mineral in metamorphic rock specimens identified by the Rock Identifier community.
Smoky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Clear Quartz
Silicon Dioxide (SiO2)
Quartz (Gravel Pebble)
Silicon Dioxide (SiO2)
Smoky Quartz
Silicon Dioxide (SiO2)
Quartz (specifically Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold) in Matrix
Iron Sulfide (FeS2)
White Quartz
Silicon Dioxide (SiO2)
Mica Schist
Mica Schist (primarily Muscovite and Biotite micas)
Blue Aventurine
Quartzite with inclusions of Dumortierite (SiO2 + Al7(BO3)(SiO4)3O3)
Greenschist
Greenschist (Major minerals include Chlorite, Actinolite, and Epidote)
Aquamarine
Beryl (Be3Al2Si6O18 with Fe2+ impurities)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Pyrite
Iron Sulfide (FeS2)
Ruby in Fuchsite (often sold as Ruby in Zoisite)
Corundum (Al2O3) in Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
Zoisite with Ruby / Anyolite
Anyolite (Ca2Al3(SiO4)3(OH) with Chromian Zoisite and Tschermakite inclusions)
Granular Sandstone
Arenite (variable composition, primarily SiO2)
Sandstone
Arenite (primarily SiO2)
Granite Sand (Decomposed Granite)
Grus / Quartz-Feldspar Detritus
Rough Quartz
Silicon Dioxide (SiO2)
Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
Clear Quartz
Silicon Dioxide (SiO2)
Clear Quartz Crystal (Herkimer Diamond style)
Silicon Dioxide (SiO2)
Quartz Geode Fragment
Silicon Dioxide (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Marble
Recrystallized Calcite (CaCO3)
Smoky Quartz
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Quartz (Grain/Fragment)
Silicon Dioxide (SiO2)
Herkimer Diamond in Matrix
Quartz (SiO2) in Dolostone (CaMg(CO3)2)
Rose Quartz
Rose Quartz (SiO2)
Granodiorite
Granodiorite (Intermediate intrusive igneous rock)
Rough Sapphire
Corundum (Al2O3)
Garnet
Garnet Group (formula varies, e.g., Almasndine: Fe3Al2(SiO4)3)
Agate (Banded Chalcedony)
Agate (Silicon Dioxide, SiO2)
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8) with Albite inclusions
Ruby
Corundum (Al2O3 with Chromium traces)
Feldspar (Orthoclase/Potassium Feldspar)
KAlSi3O8 (Potassium Aluminum Silicate)
Sodalite
Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Pyrite
Iron Disulfide (FeS2)