Rock Identifier

Category

Mineral (Specifically A Mineraloid)

Browse mineral (specifically a mineraloid) specimens identified by the Rock Identifier community.

Learn about Mineral (Specifically A Mineraloid) in the encyclopedia

Shungite

Anatase

Sperrylite

Olenite

Buergerite

Hutcheonite

Celsian

Coal

Glauconite

Rock Salt

Baddeleyite

Talc

Pink Granite (River Pebble) (Phaneritic Felsic Igneous Rock) — igneous

Pink Granite (River Pebble)

Phaneritic Felsic Igneous Rock

Chert (and Cherty Limestone) (Silicon Dioxide (SiO2) with impurities) — sedimentary

Chert (and Cherty Limestone)

Silicon Dioxide (SiO2) with impurities

Pink Granite (Granite (Felsic Plutonic Rock)) — igneous

Pink Granite

Granite (Felsic Plutonic Rock)

Pink Granite (Granite (Phaneritic Quartz-Feldspar intrusive rock)) — igneous

Pink Granite

Granite (Phaneritic Quartz-Feldspar intrusive rock)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Flint (Chert) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Flint (Chert)

Cryptocrystalline Quartz (SiO2)

Fossilized Knightia Fish (Knightia eocaena (set in fossiliferous Micritic Limestone)) — sedimentary

Fossilized Knightia Fish

Knightia eocaena (set in fossiliferous Micritic Limestone)

Ocean Jasper (Orbicular Jasper (Silicon Dioxide, SiO2)) — sedimentary

Ocean Jasper

Orbicular Jasper (Silicon Dioxide, SiO2)

Ocean Jasper (Spherulitic Chalcedony (SiO2)) — sedimentary

Ocean Jasper

Spherulitic Chalcedony (SiO2)

Pink Granite (Granite (Felsic Plutonic Rock)) — igneous

Pink Granite

Granite (Felsic Plutonic Rock)

Yooperlite (Sodalite-rich Syenite) (Sodalite-bearing Syenite) — igneous

Yooperlite (Sodalite-rich Syenite)

Sodalite-bearing Syenite

Soapstone Carving (Steatite) — metamorphic

Soapstone Carving

Steatite

Nephrite Jade (Tremolite-Actinolite solid solution Ca2(Mg,Fe)5Si8O22(OH)2) — metamorphic

Nephrite Jade

Tremolite-Actinolite solid solution Ca2(Mg,Fe)5Si8O22(OH)2

Sandstone (specifically Double Arch in Arches National Park) (Entrada Sandstone) — sedimentary

Sandstone (specifically Double Arch in Arches National Park)

Entrada Sandstone

Obsidian (Apache Tear) (Volcanic Glass (Amorphous Silicon Dioxide, SiO2)) — igneous

Obsidian (Apache Tear)

Volcanic Glass (Amorphous Silicon Dioxide, SiO2)

Sandstone with Brachiopod Mold Fossil (Sedimentary rock (Sandstone) with indeterminate Brachiopod mold) — fossil

Sandstone with Brachiopod Mold Fossil

Sedimentary rock (Sandstone) with indeterminate Brachiopod mold

Porphyritic Andesite (Andesite (Porphyry)) — igneous

Porphyritic Andesite

Andesite (Porphyry)

Chert (or Dark Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (or Dark Flint)

Microcrystalline Quartz (SiO2)

Chert (Jasper/Flint variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper/Flint variety)

Silicon Dioxide (SiO2)

Red Granite (Phaneritic Felsic Igneous Rock (high K-feldspar)) — igneous

Red Granite

Phaneritic Felsic Igneous Rock (high K-feldspar)

Chert (or Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (or Jasper)

Microcrystalline Quartz (SiO2)

Diabase (Diabase (also known as Dolerite)) — igneous

Diabase

Diabase (also known as Dolerite)

Chert (Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper variety)

Silicon Dioxide (SiO2)

Pink Granite (Granite (Alkali Feldspar Granite)) — igneous

Pink Granite

Granite (Alkali Feldspar Granite)

Chert (Flint) with Limestone Matrix (Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)) — sedimentary

Chert (Flint) with Limestone Matrix

Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)

Red Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Chert (Black Chert/Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Black Chert/Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Granite (Pink Orthoclase variety) (Phaneritic intrusive igneous rock (Quartz, Orthoclase, Plagioclase, and Mica)) — igneous

Granite (Pink Orthoclase variety)

Phaneritic intrusive igneous rock (Quartz, Orthoclase, Plagioclase, and Mica)

Pink Granite (Phaneritic Plutonic Felsic Rock (K-Feldspar Granite)) — igneous

Pink Granite

Phaneritic Plutonic Felsic Rock (K-Feldspar Granite)

Pink Granite (Phaneritic Felsic Igneous Rock (Rich in K-Feldspar)) — igneous

Pink Granite

Phaneritic Felsic Igneous Rock (Rich in K-Feldspar)

Pink Granite (Granite (rich in Potassium Feldspar / Orthoclase)) — igneous

Pink Granite

Granite (rich in Potassium Feldspar / Orthoclase)

Pink Granite (Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)) — igneous

Pink Granite

Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)

Tektite (Indochinite) (Tektite (High-silica natural glass)) — mineraloid / impact glass

Tektite (Indochinite)

Tektite (High-silica natural glass)

mineraloid / impact glass

Red Jasper (Microcrystalline Quartz (SiO2) with iron oxide impurities) — sedimentary

Red Jasper

Microcrystalline Quartz (SiO2) with iron oxide impurities

Pink Granite (Glacial Cobble) (Granite (rich in Potassium Feldspar / Orthoclase)) — igneous

Pink Granite (Glacial Cobble)

Granite (rich in Potassium Feldspar / Orthoclase)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Pink Granite (Granite (Alkali-feldspar granite)) — igneous

Pink Granite

Granite (Alkali-feldspar granite)

Basalt (Basalt) — igneous

Basalt

Basalt

Red Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Red Jasper

Microcrystalline Quartz (SiO2)

Pink Granite (Phaneritic Felsic Igneous Plutonic Rock) — igneous

Pink Granite

Phaneritic Felsic Igneous Plutonic Rock

Chert (Jasper variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper variety)

Microcrystalline Quartz (SiO2)

Chert (Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper)

Silicon Dioxide (SiO2)