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

White Topaz (Topaz [Al2SiO4(F,OH)2]) — mineral

White Topaz

Topaz [Al2SiO4(F,OH)2]

Jasper (Silicon dioxide (SiO2) with iron oxide impurities) — sedimentary

Jasper

Silicon dioxide (SiO2) with iron oxide impurities

Petrified Wood / Fossilized Bone (Silicified / Mineralized Fossil (Silica SiO2)) — fossil

Petrified Wood / Fossilized Bone

Silicified / Mineralized Fossil (Silica SiO2)

Sandstone (Ferruginous) (Arenite (with iron oxide cement)) — sedimentary

Sandstone (Ferruginous)

Arenite (with iron oxide cement)

Limonite (Ironstone Concretion) (Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)) — mineral

Limonite (Ironstone Concretion)

Hydrated iron(III) oxide-hydroxide (FeO(OH)·nH2O)

Weathered greenish rock fragment (Indeterminate; possibly epidote- or chlorite-bearing altered silicate rock) — mineral

Weathered greenish rock fragment

Indeterminate; possibly epidote- or chlorite-bearing altered silicate rock

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

Lapis Lazuli

Lapis Lazuli (A metamorphic rock primarily composed of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, along with Calcite and Pyrite)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Corundum (Sapphire variant) (Aluminum Oxide (Al2O3)) — mineral

Corundum (Sapphire variant)

Aluminum Oxide (Al2O3)

Turquoise (CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)) — mineral

Turquoise

CuAl6(PO4)4(OH)8·4H2O (Hydrated copper and aluminum phosphate)

Epidote in Quartz (Epidote (Ca2(Al,Fe)3(SiO4)3(OH)) in Quartz (SiO2)) — mineral

Epidote in Quartz

Epidote (Ca2(Al,Fe)3(SiO4)3(OH)) in Quartz (SiO2)

Chert with Epidote and Jasper inclusions (SiO2 (Silicon Dioxide) with Ca2(Al, Fe)3(SiO4)3(OH) inclusions) — sedimentary

Chert with Epidote and Jasper inclusions

SiO2 (Silicon Dioxide) with Ca2(Al, Fe)3(SiO4)3(OH) inclusions

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

Rhodonite

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

Chondrite Meteorite (Ordinary Chondrite (Fe-Ni alloy, Olivine, Pyroxene)) — Mineral

Chondrite Meteorite

Ordinary Chondrite (Fe-Ni alloy, Olivine, Pyroxene)

Olivine (Peridot) (Magnesium Iron Silicate (Mg,Fe)2SiO4) — Mineral

Olivine (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Weathered sandstone or limestone fragment (Likely quartz-rich sandstone or micritic limestone; exact identification requires testing) — sedimentary

Weathered sandstone or limestone fragment

Likely quartz-rich sandstone or micritic limestone; exact identification requires testing

Quartz with impurities or Host Rock (SiO2 (Silicon Dioxide) with mixed silicates) — mineral

Quartz with impurities or Host Rock

SiO2 (Silicon Dioxide) with mixed silicates

Pyrite (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Jasper or Agate (Silicon dioxide (SiO2)) — Mineral

Jasper or Agate

Silicon dioxide (SiO2)

Red Jasper (Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)) — sedimentary

Red Jasper

Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)

Almandine Garnet (Iron aluminum silicate (Fe3Al2(SiO4)3)) — metamorphic

Almandine Garnet

Iron aluminum silicate (Fe3Al2(SiO4)3)

Sandstone with Hematite staining (Arenite with Fe2O3 inclusions) — sedimentary

Sandstone with Hematite staining

Arenite with Fe2O3 inclusions

Sandstone (with Iron Oxide staining) (Arenite (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (with Iron Oxide staining)

Arenite (primarily SiO2 with Fe2O3 staining)

Gold Ore (Native Gold (Au) in Quartz or Silicate matrix) — mineral

Gold Ore

Native Gold (Au) in Quartz or Silicate matrix

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

Olivine (Peridot)

Magnesium Iron Silicate (Mg, Fe)2SiO4

Banded Gneiss (Gneiss (high-grade metamorphic silicate rock)) — metamorphic

Banded Gneiss

Gneiss (high-grade metamorphic silicate rock)

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

Chrysocolla

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

Picture Jasper (Silicon Dioxide (SiO2) with iron oxide and clay inclusions) — sedimentary

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and clay inclusions

Plum Blossom Tourmaline (Tourmaline with Lepidolite (Na,Ca)(Li,Mg,Al)3Al6(BO3)3Si6O18(OH)4) — igneous

Plum Blossom Tourmaline

Tourmaline with Lepidolite (Na,Ca)(Li,Mg,Al)3Al6(BO3)3Si6O18(OH)4

Black Obsidian (Volcanic glass (Amorphous silicates)) — igneous

Black Obsidian

Volcanic glass (Amorphous silicates)

Mixed Mineral Collection (Quartz, Amethyst, Rose Quartz, Pyrite, etc.) (Mixed Silicates and Sulfides (SiO2, FeS2)) — mineral

Mixed Mineral Collection (Quartz, Amethyst, Rose Quartz, Pyrite, etc.)

Mixed Silicates and Sulfides (SiO2, FeS2)

Quartz (likely Yellow/Orange variety, possibly Citrine or Chalcedony with iron staining) (Quartz (SiO₂)) — Mineral

Quartz (likely Yellow/Orange variety, possibly Citrine or Chalcedony with iron staining)

Quartz (SiO₂)

Rounded gray pebble, possibly limestone or quartzite (Uncertain; likely micritic limestone (calcite, CaCO₃) or fine-grained quartzite (quartz, SiO₂)) — sedimentary

Rounded gray pebble, possibly limestone or quartzite

Uncertain; likely micritic limestone (calcite, CaCO₃) or fine-grained quartzite (quartz, SiO₂)

Sandstone (with Iron Staining) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (with Iron Staining)

Clastic sedimentary rock (primarily SiO2)

Sandstone (Quartzose Sandstone) (Arenite (primarily SiO2)) — sedimentary

Sandstone (Quartzose Sandstone)

Arenite (primarily SiO2)

Milky quartz pebble (Quartz (silicon dioxide, SiO₂)) — mineral

Milky quartz pebble

Quartz (silicon dioxide, SiO₂)

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

Olivine (Peridot)

Magnesium Iron Silicate ((Mg, Fe)2SiO4)

Green Aventurine (or Xiuyan Jade / Serpentine) (Silicon Dioxide (SiO2) with Fuchsite inclusions or Magnesium Silicate) — metamorphic

Green Aventurine (or Xiuyan Jade / Serpentine)

Silicon Dioxide (SiO2) with Fuchsite inclusions or Magnesium Silicate

Chrysoprase (Nickel-bearing Chalcedony (SiO2 with Ni impurities)) — mineral

Chrysoprase

Nickel-bearing Chalcedony (SiO2 with Ni impurities)

Lazulite (Lazulite (MgAl2(PO4)2(OH)2)) — mineral

Lazulite

Lazulite (MgAl2(PO4)2(OH)2)

Bumblebee Jasper (Hydrothermal Volcanic Rock (Primarily Calcite with Orpiment - As2S3, Realgar, and Pyrite)) — igneous

Bumblebee Jasper

Hydrothermal Volcanic Rock (Primarily Calcite with Orpiment - As2S3, Realgar, and Pyrite)

Agate (Agate (Chalcedony), SiO2) — Mineral

Agate

Agate (Chalcedony), SiO2