Rock Identifier

Category

Mineral (Silicate Variety)

Browse mineral (silicate variety) specimens identified by the Rock Identifier community.

Learn about Mineral (Silicate Variety) in the encyclopedia

Calc-Silicate Rock

Calc-Silicate Rock

Brookite

Talc

Eltyubyuite

Paracelsian

Banalsite

Sodalite

Albite

Hemimorphite

Mica

Shattuckite

Skarn

Moldavite (Tektite (Natural Silicate Glass)) — gemstone

Moldavite

Tektite (Natural Silicate Glass)

Amethyst (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Olivine (Peridot in gem form) (Magnesium Iron Silicate (Mg,Fe)2SiO4) — mineral

Olivine (Peridot in gem form)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Chrysotile Asbestos (Chrysotile [Mg3Si2O5(OH)4]) — mineral

Chrysotile Asbestos

Chrysotile [Mg3Si2O5(OH)4]

Weathered gray stone, likely granite or gneiss (Probable granitic rock; exact identification is uncertain from the image) — igneous

Weathered gray stone, likely granite or gneiss

Probable granitic rock; exact identification is uncertain from the image

Dyed Dalmatian Jasper (Dalmatian Stone) (Perthitic Feldspar with Arfvedsonite inclusions) — igneous

Dyed Dalmatian Jasper (Dalmatian Stone)

Perthitic Feldspar with Arfvedsonite inclusions

Crushed Granite and Quartz Gravel (Composite Igneous and Silicate Rock Aggregate) — igneous

Crushed Granite and Quartz Gravel

Composite Igneous and Silicate Rock Aggregate

Greenstone (Rough Jadeite or Nephrite) (Sodium aluminum silicate (Jadeite) / Calcium magnesium iron silicate (Nephrite)) — metamorphic

Greenstone (Rough Jadeite or Nephrite)

Sodium aluminum silicate (Jadeite) / Calcium magnesium iron silicate (Nephrite)

Mammoth or Mastodon Tooth Fossil (Mammuthus / Mammut tooth) — fossil

Mammoth or Mastodon Tooth Fossil

Mammuthus / Mammut tooth

White Jade (Nephrite or Jadeite) (Tremolite-Actinolite series (Nephrite) or NaAlSi2O6 (Jadeite)) — metamorphic

White Jade (Nephrite or Jadeite)

Tremolite-Actinolite series (Nephrite) or NaAlSi2O6 (Jadeite)

Serpentinite (Serpentinite (Hydrated magnesium iron silicate)) — metamorphic

Serpentinite

Serpentinite (Hydrated magnesium iron silicate)

Ammonite fossil in matrix (Fossilized ammonoid cephalopod; likely an ammonite such as Dactylioceras or a related Jurassic taxon) — fossil

Ammonite fossil in matrix

Fossilized ammonoid cephalopod; likely an ammonite such as Dactylioceras or a related Jurassic taxon

Chrysocolla (Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O) — mineral

Chrysocolla

Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O

Jadeite Jade (NaAlSi2O6 (Sodium Aluminum Silicate)) — metamorphic

Jadeite Jade

NaAlSi2O6 (Sodium Aluminum Silicate)

Banded basalt pebble (Basalt, likely crossed by a pale quartz or calcite vein) — igneous

Banded basalt pebble

Basalt, likely crossed by a pale quartz or calcite vein

River Siltstone / Mudstone Pebble (Siltstone (composed of mixed silicate and carbonate minerals)) — sedimentary

River Siltstone / Mudstone Pebble

Siltstone (composed of mixed silicate and carbonate minerals)

Chakra Tumbled Stone Set (Various (including Amethyst [SiO2], Sodalite [Na8(Al6Si6O24)Cl2], Green Aventurine [SiO2], Red Jasper [SiO2], etc.)) — Mineral

Chakra Tumbled Stone Set

Various (including Amethyst [SiO2], Sodalite [Na8(Al6Si6O24)Cl2], Green Aventurine [SiO2], Red Jasper [SiO2], etc.)

Lapis Lazuli (Lapis Lazuli (Rock composed primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)) — metamorphic

Lapis Lazuli

Lapis Lazuli (Rock composed primarily of Lazurite (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, Calcite, and Pyrite)

Charoite (Charoite, K(Ca,Na)2Si4O10(OH,F)·H2O) — metamorphic

Charoite

Charoite, K(Ca,Na)2Si4O10(OH,F)·H2O

Moss Agate / Green Jasper (Silicon Dioxide (SiO2) with chlorite/hornblende inclusions) — mineral

Moss Agate / Green Jasper

Silicon Dioxide (SiO2) with chlorite/hornblende inclusions

Amethyst (Silicon Dioxide (SiO2) with trace Iron (Fe3+)) — mineral

Amethyst

Silicon Dioxide (SiO2) with trace Iron (Fe3+)

Eudialyte in Matrix (Na15Ca6Fe3Zr3Si26O72(OH,Cl,H2O)3) — mineral

Eudialyte in Matrix

Na15Ca6Fe3Zr3Si26O72(OH,Cl,H2O)3

Amazonite with Quartz and Smoky Quartz (Potassium Aluminum Silicate (KAlSi3O8) with SiO2) — mineral

Amazonite with Quartz and Smoky Quartz

Potassium Aluminum Silicate (KAlSi3O8) with SiO2

Moonstone (Adularia (Potassium Aluminum Silicate, KAlSi3O8)) — mineral

Moonstone

Adularia (Potassium Aluminum Silicate, KAlSi3O8)

Sodalite (Sodium Aluminum Silicate Chloride (Na8Al6Si6O24Cl2)) — mineral

Sodalite

Sodium Aluminum Silicate Chloride (Na8Al6Si6O24Cl2)

Quartz with Tourmaline or Amphibole (Silicon Dioxide with silicate inclusions (SiO2)) — mineral

Quartz with Tourmaline or Amphibole

Silicon Dioxide with silicate inclusions (SiO2)

Micro-Meteorite (Micrometeoroid) (Extraterrestrial Spherule (Silicate or Iron-Nickel)) — mineral

Micro-Meteorite (Micrometeoroid)

Extraterrestrial Spherule (Silicate or Iron-Nickel)

Moonstone (Orthoclase (Potassium Aluminum Silicate, KAlSi3O8)) — mineral

Moonstone

Orthoclase (Potassium Aluminum Silicate, KAlSi3O8)

Jadeite Jade (NaAlSi2O6 (Sodium Aluminum Silicate)) — metamorphic

Jadeite Jade

NaAlSi2O6 (Sodium Aluminum Silicate)

Siltstone or Sandstone Pebble (Lithic Arenite / Quartzose Siltstone) — sedimentary

Siltstone or Sandstone Pebble

Lithic Arenite / Quartzose Siltstone

Polished banded calcite (onyx marble) (Calcite, CaCO₃; commonly marketed as “honey onyx” or “Mexican onyx”) — mineral

Polished banded calcite (onyx marble)

Calcite, CaCO₃; commonly marketed as “honey onyx” or “Mexican onyx”

Rhodonite (Manganese Silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Small gray rock fragment (Indeterminate; possibly quartz-rich granite, chert, or concrete-like silicate material) — mineral

Small gray rock fragment

Indeterminate; possibly quartz-rich granite, chert, or concrete-like silicate material

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Rose Quartz (Silicon Dioxide (SiO2)) — mineral

Rose Quartz

Silicon Dioxide (SiO2)

Muscovite Mica (Muscovite (KAl2(AlSi3O10)(OH)2)) — mineral

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(OH)2)

Tumbled banded stone, likely gneiss or granite (Quartz–feldspar rock, possibly banded gneiss; exact identification requires testing) — metamorphic

Tumbled banded stone, likely gneiss or granite

Quartz–feldspar rock, possibly banded gneiss; exact identification requires testing

Quartz Vein in Host Rock (Silicon dioxide (SiO2) veining in silicate matrix) — sedimentary

Quartz Vein in Host Rock

Silicon dioxide (SiO2) veining in silicate matrix

Bauxite (Iron-stained Chert / Ironstone Aggregate) (Hydrous aluminum oxide mixture (mainly Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Goethite α-Fe3+O(OH))) — sedimentary

Bauxite (Iron-stained Chert / Ironstone Aggregate)

Hydrous aluminum oxide mixture (mainly Gibbsite Al(OH)3, Boehmite γ-AlO(OH), and Goethite α-Fe3+O(OH))

Chrysocolla (Chrysocolla: Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O) — mineral

Chrysocolla

Chrysocolla: Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O

Chrysocolla (Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nHeO)) — mineral

Chrysocolla

Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nHeO)

Rhodonite (Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite

Rhodonite (Manganese Silicate), (Mn,Fe,Mg,Ca)SiO3