Citrine
Silicon dioxide (SiO2)
Category
Browse sedimentary or igneous fragment specimens identified by the Rock Identifier community.
Citrine
Silicon dioxide (SiO2)
Chalcopyrite
Copper Iron Sulfide (CuFeS2)
Orthoclase Feldspar with Quartz
Orthoclase (KAlSi3O8)
Unknown Rock Specimen
Ocean Jasper
Orbicular Jasper / Silicate
Dendritic Agate
Silicon Dioxide (SiO2) with inclusions
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
Garnet
Garnet Group (Silicate Minerals)
Granite Pebble
Igneous Intrusive Rock (Quartz-Feldspar-Mica Phenocrysts)
Chevron Amethyst
Silicon dioxide, SiO2 (Quartz variety)
Citrine
Silicon Dioxide (SiO2)
Citrine Quartz
Silicon Dioxide (SiO2)
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
Labradorite
(Ca,Na)(Al,Si)4O8
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Citrine
Silicon Dioxide (SiO2)
Quartz (Variety: Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
Basalt
Mafic Volcanic Rock (composed of plagioclase, pyroxene, and olivine)
Clear Quartz Point
Silicon Dioxide (SiO2)
Biotite / Black Mica
K(Mg,Fe)3(AlSi3O10)(F,OH)2
Biotite (Mica)
K(Mg,Fe)3AlSi3O10(OH,F)2
Milky Quartz
Silicon Dioxide (SiO2)
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Yellow Quartz
Silicon Dioxide (SiO2)
Pyrope Garnet
Magnesium aluminum silicate (Mg3Al2Si3O12)
Anyolite (Ruby in Zoisite)
Zoisite with inclusions of Hornblende and Ruby (Ca2Al3(SiO4)3(OH))
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
Peridot
Olivine ((Mg, Fe)2SiO4)
Banded Agate
Agate (Silicon Dioxide - SiO2)
Amazonite
KAlSi3O8 (Potassium Aluminum Silicate)
Eudialyte in Matrix
Eudialyte (Na4(Ca,Ce)2(Fe2+,Mn,Y)ZrSi8O22(OH,Cl)2)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Sodalite
Sodalite [Na8(Al6Si6O24)Cl2]
Snowflake Obsidian
Obsidian with Cristobalite inclusions
Granite
Granite
Basalt River Stone
Basaltic Igneous Rock
Agate
Silicon dioxide (SiO2)
Agate
SiO2
Arfvedsonite in Quartz
Arfvedsonite [Na3(Fe2+4Fe3+)Si8O22(OH)2] often hosted in Quartz or Feldspar
Gold Ore
Auriferous Quartz and Sulfide Mineralization in Host Rock