Citrine
Silicon Dioxide (SiO2)
Category
Browse igneous and sedimentary mixture specimens identified by the Rock Identifier community.
Citrine
Silicon Dioxide (SiO2)
Basalt River Stone
Basaltic Igneous Rock
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
Biotite (Mica)
K(Mg,Fe)3AlSi3O10(OH,F)2
Peridot
Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
Milky Quartz
Silicon Dioxide (SiO2)
Gold
Native Gold (Au)
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
Hypersthene
Hypersthene ((Mg,Fe)SiO3)
Orthoclase Feldspar with Quartz
Orthoclase (KAlSi3O8)
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
Biotite / Black Mica
K(Mg,Fe)3(AlSi3O10)(F,OH)2
Sodalite
Chloric sodium aluminum silicate (Na8(Al6Si6O24)Cl2)
Pyrope Garnet
Magnesium aluminum silicate (Mg3Al2Si3O12)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Olivine in Basalt matrix
Peridotite (Mg, Fe)2SiO4
Granite
Granite
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Anyolite (Ruby in Zoisite)
Zoisite with inclusions of Hornblende and Ruby (Ca2Al3(SiO4)3(OH))
Labradorite
Labradorite ((Ca, Na)(Al, Si)4O8)
Clear Quartz Point
Silicon Dioxide (SiO2)
Granite
Granite (Mainly Quartz, Feldspar, and Mica)
Arfvedsonite in Quartz
Arfvedsonite [Na3(Fe2+4Fe3+)Si8O22(OH)2] often hosted in Quartz or Feldspar
Granite
Granite
Yellow Agate
Silicon Dioxide (SiO2)
Sodalite
Na8(Al6Si6O24)Cl2
Labradorite
Labradorite (a calcium-enriched feldspar mineral), (Ca, Na)(Al, Si)4O8
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Orthoclase Feldspar
Potassium Aluminum Silicate (KAlSi3O8)
Peridot
Olivine ((Mg, Fe)2SiO4)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Sodalite
Na8(Al6Si6O24)Cl2
Arfvedsonite (often mistakenly sold as Astrophyllite)
Arfvedsonite [Na3(Fe2+)4Fe3+Si8O22(OH)2]
Amazonite with Smoky Quartz and Feldspar
Microcline (KAlSi3O8) with Quartz (SiO2)
Labradorite
Labradorite (Ca,Na)(Al,Si)4O8
Potassium Feldspar
Orthoclase (KAlSi3O8)
Sodalite
Sodalite [Na8(Al6Si6O24)Cl2]
Rose Quartz
Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Rose Quartz
Quartz (Silicon Dioxide, SiO2) with trace amounts of titanium, iron, or manganese
Banded Agate
Agate (Silicon Dioxide - SiO2)
Pink Feldspar
Orthoclase Feldspar (KAlSi3O8)