Quartz (Small Fragment)
Silicon Dioxide (SiO2)
Category
Browse igneous and mineral specimens identified by the Rock Identifier community.
Quartz (Small Fragment)
Silicon Dioxide (SiO2)
Sodalite
Na8(Al6Si6O24)Cl2
Quartz with Mafic Inclusions
Silicon Dioxide (SiO2) with host igneous matrix
Granite
Phaneritic Plutonic Felsic Rock
Milky Quartz
Silicon Dioxide (SiO2)
Pyrite in Matrix (Fool's Gold)
Iron Sulfide (FeS2)
Banded Gneiss
Gneiss
Dyed Dalmatian Stone
Aplite (Alkali-feldspar granite) with Arfvedsonite
Granitic Pegmatite with Schorl Tourmaline
Granitic Pegmatite (Schorl: NaFe3Al6(BO3)3Si6O18(OH)4)
Amygdaloidal Basalt with Epidote/Chlorite
Basalt (containing (Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)))
Granite
Granite (a common igneous rock)
Quartz (Chalcedony/Agate)
Silicon Dioxide (SiO2)
Agate
SiO2
Granite
Felsic intrusive igneous rock
Quartz with Muscovite Mica
Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide (KAl2(AlSi3O10)(OH)2)
Dalmation Stone (Dalmation Jasper)
Peralkaline Rock with Feldspar and Arfvedsonite
Specular Hematite
Hematite (Fe2O3)
Blue Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Peacock Ore (Bornite/Chalcopyrite)
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2)
Blue Quartz (potentially Dumortierite-included)
Silicon Dioxide (SiO2) with inclusions
Diorite
Diorite (Phaneritic intermediate plutonic rock)
Diorite
Diorite (Intermediate intrusive igneous rock)
Granite
Granite (Felsic Plutonic Rock)
Granodiorite
Granodiorite
Garnet
Garnet Group (Silicate Minerals)
Citrine Quartz
Silicon Dioxide (SiO2) with ferric iron impurities
Basalt with Quartz/Calcite Veins
Extrusive mafic igneous rock with hydrothermal mineralization
Granite (Giallo Ornamental / Venetian Gold)
Granite (composed mainly of Quartz, Feldspar, Biotite, and Garnet)
Chalcopyrite
Chalcopyrite (CuFeS2)
Snowflake Obsidian
Volcanic Glass (SiO2 rich with Cristobalite inclusions)
Granite Pebble
Granite (a plutonic igneous rock composed primarily of quartz, feldspar, and mica/amphibole)
Labradorite (a variety of Feldspar)
Labradorite; (Na,Ca)(Al,Si)4O8 (a plagioclase feldspar)
Granite
Phaneritic intrusive igneous rock (Quartz, Feldspar, Mica)
Diorite (Salt and Pepper Rock)
Diorite
Diorite
Phaneritic Intermediate Igneous Rock
Granite
Granite (a common type of Felsic Intrusive Igneous Rock)
Snowflake Obsidian
Obsidian with Cristobalite inclusions (SiO2)
Dalmatian Stone
Dalmatian Jasper (Aplitic Rock)
Quartz (Citrine or Smoky variant)
Silicon Dioxide (SiO2)
Citrine
Silicon Dioxide (SiO2) with ferric iron impurities
Arsenopyrite in Quartz Matrix
Arsenopyrite (FeAsS) with Quartz (SiO2)
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)