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

Tumbled Mixed Gemstones and Rocks (Various mineral species including quartz (SiO2) and silicate minerals) — mineral

Tumbled Mixed Gemstones and Rocks

Various mineral species including quartz (SiO2) and silicate minerals

Epidote in Quartz (Unakite-like specimen) (Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)) in Quartz (SiO2)) — metamorphic

Epidote in Quartz (Unakite-like specimen)

Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)) in Quartz (SiO2)

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

Chrysocolla in Matrix

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

Garnierite in Matrix (Nickel-bearing Magnesium Silicates (Garnierite)) — mineral

Garnierite in Matrix

Nickel-bearing Magnesium Silicates (Garnierite)

Snowflake Obsidian (Spherulitic Obsidian (Amorphous Volcanic Glass with Cristobalite inclusions)) — igneous

Snowflake Obsidian

Spherulitic Obsidian (Amorphous Volcanic Glass with Cristobalite inclusions)

Mahogany Obsidian (Volcanic Glass (Silicate: SiO2 + Fe2O3)) — igneous

Mahogany Obsidian

Volcanic Glass (Silicate: SiO2 + Fe2O3)

Porphyritic granite (granite porphyry) (Quartz–feldspar porphyritic granite; mainly quartz, K-feldspar, plagioclase, and biotite/hornblende) — igneous

Porphyritic granite (granite porphyry)

Quartz–feldspar porphyritic granite; mainly quartz, K-feldspar, plagioclase, and biotite/hornblende

Granite (Granite) — igneous

Granite

Granite

Slag (Anthropogenic glassy silicate) — Mineral-like byproduct

Slag

Anthropogenic glassy silicate

Mineral-like byproduct

Copper Ore (with Malachite/Chrysocolla and Iron Oxides) (Secondary Copper Minerals (Cu2(CO3)(OH)2 / (Cu,Al)2H2Si2O5(OH)4·nH2O)) — mineral

Copper Ore (with Malachite/Chrysocolla and Iron Oxides)

Secondary Copper Minerals (Cu2(CO3)(OH)2 / (Cu,Al)2H2Si2O5(OH)4·nH2O)

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

Chrysocolla in Matrix

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

Granitic Gneiss (Gneiss (Complex silicate composition)) — metamorphic

Granitic Gneiss

Gneiss (Complex silicate composition)

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Banded Calcite (Mexican Onyx) (Calcium Carbonate (CaCO3)) — sedimentary

Banded Calcite (Mexican Onyx)

Calcium Carbonate (CaCO3)

Green Jasper (Silicon Dioxide (SiO2) with mineral inclusions) — sedimentary

Green Jasper

Silicon Dioxide (SiO2) with mineral inclusions

Diorite (Salt and Pepper Rock) (Diorite) — igneous

Diorite (Salt and Pepper Rock)

Diorite

Schorl (Black Tourmaline) in Quartz and Feldspar (NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)) — mineral

Schorl (Black Tourmaline) in Quartz and Feldspar

NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)

Rose Quartz, Fuchsite, and Green Aventurine Collection (Silicon Dioxide (SiO2) and Potassium aluminum silicate hydroxide fluoride (KAl2(AlSi3O10)(OH, F)2)) — mineral

Rose Quartz, Fuchsite, and Green Aventurine Collection

Silicon Dioxide (SiO2) and Potassium aluminum silicate hydroxide fluoride (KAl2(AlSi3O10)(OH, F)2)

Granite (likely weathered quartz-bearing granite) (Granite; primarily quartz, feldspar, and mica/amphibole) — igneous

Granite (likely weathered quartz-bearing granite)

Granite; primarily quartz, feldspar, and mica/amphibole

Bauxite (Aluminium ore / Hydrated aluminium oxides (AlOx(OH)3-2x)) — sedimentary

Bauxite

Aluminium ore / Hydrated aluminium oxides (AlOx(OH)3-2x)

Bauxite (Bauxite (Al2O3·nH2O)) — sedimentary

Bauxite

Bauxite (Al2O3·nH2O)

Satin Spar (Gypsum) (Calcium Sulfate Dihydrate (CaSO4·2H2O)) — mineral

Satin Spar (Gypsum)

Calcium Sulfate Dihydrate (CaSO4·2H2O)

Quartz Crystal Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal Fragment

Silicon Dioxide (SiO2)

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

Chrysocolla

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

Picture Jasper (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Picture Jasper

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Green Quartz (Aventurine or Green Quartzite) (SiO2 (Silicon Dioxide) with mica inclusions) — metamorphic

Green Quartz (Aventurine or Green Quartzite)

SiO2 (Silicon Dioxide) with mica inclusions

Coprolite (Coprolite (fossilized feces)) — fossil

Coprolite

Coprolite (fossilized feces)

Green Aventurine (SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)) — mineral

Green Aventurine

SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)

Sugilite (KNa2(Fe,Mn,Al)2Li3Si12O30) — mineral

Sugilite

KNa2(Fe,Mn,Al)2Li3Si12O30

Blue-gray quartz-rich rock fragment, likely crushed granite or gneiss (Granite–gneiss aggregate; chiefly quartz (SiO₂), feldspar, and mica/amphibole) — igneous

Blue-gray quartz-rich rock fragment, likely crushed granite or gneiss

Granite–gneiss aggregate; chiefly quartz (SiO₂), feldspar, and mica/amphibole

Red Jasper (Jasper (Silicate Mineral), SiO2 with Fe2O3 inclusions) — sedimentary

Red Jasper

Jasper (Silicate Mineral), SiO2 with Fe2O3 inclusions

Dragon Blood Jasper (Epidote with Pietersite or Red Jasper (Silicate mineral)) — metamorphic

Dragon Blood Jasper

Epidote with Pietersite or Red Jasper (Silicate mineral)

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

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

Chrysotile Asbestos

Chrysotile [Mg3Si2O5(OH)4]

Orthoclase (Potassium) Feldspar in Quartz (KAlSi3O8 (Potassium Aluminum Silicate)) — igneous

Orthoclase (Potassium) Feldspar in Quartz

KAlSi3O8 (Potassium Aluminum Silicate)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Bumblebee Jasper (Anhydrite-Aragonite mixture with Orpiment and Realgar) — mineraloid

Bumblebee Jasper

Anhydrite-Aragonite mixture with Orpiment and Realgar

Green Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Green Jasper

Silicon Dioxide (SiO2) with impurities

Blue Topaz (Cut Gemstone) (Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)) — gemstone

Blue Topaz (Cut Gemstone)

Aluminum silicate fluoride hydroxide (Al2SiO4(F,OH)2)

Metallic meteorite fragment (probable stony-iron or iron meteorite) (Undetermined meteoritic Fe–Ni alloy with silicate minerals) — meteorite

Metallic meteorite fragment (probable stony-iron or iron meteorite)

Undetermined meteoritic Fe–Ni alloy with silicate minerals

Diorite (Phaneritic Intermediate Plutonic Rock) — igneous

Diorite

Phaneritic Intermediate Plutonic Rock