Dolerite (Diabase)
Dolerite / Diabase
Category
Browse igneous specimens identified by the Rock Identifier community.
Dolerite (Diabase)
Dolerite / Diabase
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
Milky Quartz
Silicon Dioxide (SiO2)
Granite (likely a river or beach pebble)
Granite (a felsic intrusive igneous rock primarily composed of quartz, feldspar, and mica)
Peridotite
Peridotite (Ultramafic Rock)
Sodalite
Sodalite: Na8(Al6Si6O24)Cl2
Milky Quartz
Silicon Dioxide (SiO2)
Rose Quartz
Silicon Dioxide (SiO2) with trace Titanium, Iron, or Manganese
Agate
Chalcedony (SiO2) with impurities
Strawberry Quartz (Aventurine)
Silicon Dioxide with Hematite/Lepidocrocite inclusions (SiO2)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Muscovite
Muscovite (KAl2(AlSi3O10)(OH)2)
Clear Quartz
Silicon Dioxide (SiO2)
Zoisite with Ruby
Anyolite (Calcium aluminum hydroxy silicate with Corundum) Ca2Al3(SiO4)3(OH)
Clear Quartz
Silicon Dioxide (SiO2)
Strawberry Quartz
Quartz with Hematite inclusions (SiO2 + Fe2O3)
Labradorite
(Ca, Na)(Al, Si)4O8
Moonstone
Orthoclase Feldspar ((K,Na)AlSi3O8)
Milky Quartz
Silicon Dioxide (SiO2)
Tumbled Moonstone
Feldspar (Orthoclase/Albite), KAlSi3O8
Emerald
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
Quartz (Citrine or Smoky variant)
Silicon Dioxide (SiO2)
Sodalite
Na8(Al6Si6O24)Cl2
Citrine
Silicon dioxide (SiO2)
Chalcedony
Chalcedony (SiO2)
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
White Quartz (Mushroom Carving)
Quartz (Silicon Dioxide - SiO2)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Magnetic Sand Grain / Magnetite Pellet
Magnetite (Fe3O4)
Clear Quartz Crystal
Silicon Dioxide (SiO2)
Smoky Quartz Cluster
Quartz (Silicon Dioxide) - SiO2
Arfvedsonite (often mistakenly sold as Astrophyllite)
Arfvedsonite [Na3(Fe2+)4Fe3+Si8O22(OH)2]
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
Quartz Crystal Fragment
Silicon Dioxide (SiO2)
Garnet (specifically Almandine)
Almandine - Fe3Al2(SiO4)3
Amazonite
Microcline (KAlSi3O8) with trace lead (Pb)
Quartz (Granular)
Silicon Dioxide (SiO2)
Labradorite
(Ca,Na)(Al,Si)4O8