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

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

Granite

Granite (Alkali-feldspar granite)

Gypsum (Selenite crystals in Halite/Clay matrix) (Calcium Sulfate Dihydrate (CaSO4·2H2O)) — mineral

Gypsum (Selenite crystals in Halite/Clay matrix)

Calcium Sulfate Dihydrate (CaSO4·2H2O)

Red Jasper (with Quartz) (Silicon Dioxide (SiO2) with Hematite inclusions) — mineral

Red Jasper (with Quartz)

Silicon Dioxide (SiO2) with Hematite inclusions

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Limestone (specifically a Crushed Aggregate fragment) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (specifically a Crushed Aggregate fragment)

Calcium Carbonate (CaCO3)

Chert (specifically a Worked Flint/Knapped Flake) (Chert / Flint (Microcrystalline Quartz, SiO2)) — sedimentary

Chert (specifically a Worked Flint/Knapped Flake)

Chert / Flint (Microcrystalline Quartz, SiO2)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Pink Granite (Granite (Phaneritic Igneous Rock)) — igneous

Pink Granite

Granite (Phaneritic Igneous Rock)

Specular Hematite (Specularite) (Iron(III) oxide (Fe2O3)) — mineral

Specular Hematite (Specularite)

Iron(III) oxide (Fe2O3)

Sandstone (Ferruginous) (Ferruginous Sandstone (SiO2 with Fe2O3)) — sedimentary

Sandstone (Ferruginous)

Ferruginous Sandstone (SiO2 with Fe2O3)

Greenschist (Chlorite schist (Metamorphic rock dominated by chlorite, epidote, and actinolite)) — metamorphic

Greenschist

Chlorite schist (Metamorphic rock dominated by chlorite, epidote, and actinolite)

Peach Moonstone (Potassium Aluminum Silicate (KAlSi3O8)) — mineral

Peach Moonstone

Potassium Aluminum Silicate (KAlSi3O8)

K2 Jasper (K2 Granite) (Azulite in Granite (Quartz + Feldspar + Biotite + Azurite)) — igneous

K2 Jasper (K2 Granite)

Azulite in Granite (Quartz + Feldspar + Biotite + Azurite)

Garnet Schist (Almandine Garnet Schist) — metamorphic

Garnet Schist

Almandine Garnet Schist

Lake Superior Agate (Cryptocrystalline Quartz (SiO2)) — mineral

Lake Superior Agate

Cryptocrystalline Quartz (SiO2)

Gneiss (specifically a weathered Amphibolite or Garnet Gneiss) (Gneiss (complex silicate composition)) — metamorphic

Gneiss (specifically a weathered Amphibolite or Garnet Gneiss)

Gneiss (complex silicate composition)

Quartz Crystal (specifically a Double-Terminated variety) (Silicon Dioxide (SiO2) - Low Quartz) — mineral

Quartz Crystal (specifically a Double-Terminated variety)

Silicon Dioxide (SiO2) - Low Quartz

Hag Stone (Perforated Sedimentary Rock (typically Limestone or Sandstone)) — sedimentary

Hag Stone

Perforated Sedimentary Rock (typically Limestone or Sandstone)

Pink Himalayan Salt (Halite) (Halite - NaCl (Sodium Chloride) with trace Iron Oxide and Magnesium) — Mineral

Pink Himalayan Salt (Halite)

Halite - NaCl (Sodium Chloride) with trace Iron Oxide and Magnesium

Ferruginous Quartz (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions) — mineral

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Milky Quartz Pebble (Tumbled Quartzite) (Silicon Dioxide (SiO2)) — mineral

Milky Quartz Pebble (Tumbled Quartzite)

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz Geode or Druzy Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz Geode or Druzy Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Himalayan Pink Salt (Halite (NaCl) with trace minerals) — mineral

Himalayan Pink Salt

Halite (NaCl) with trace minerals

Milky Quartz (Quartz (SiO2)) — mineral

Milky Quartz

Quartz (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Milky Quartz (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Pink Granite

Phaneritic Felsic Igneous Rock (Granite)

Pink Granite (Granite (Phaneritic felsic intrusive igneous rock)) — igneous

Pink Granite

Granite (Phaneritic felsic intrusive igneous rock)

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

Pink Granite

Phaneritic Felsic Igneous Rock (Granite)

Pink Granite Porphyry (Phaneritic Granodiorite (Quartz + Feldspar + Mica)) — igneous

Pink Granite Porphyry

Phaneritic Granodiorite (Quartz + Feldspar + Mica)

Sandstone (lithic/greywacke variety) (Arenite (composed primarily of SiO2 with various lithic fragments)) — sedimentary

Sandstone (lithic/greywacke variety)

Arenite (composed primarily of SiO2 with various lithic fragments)

Amazonite (Potassium Feldspar (KAlSi3O8)) — mineral

Amazonite

Potassium Feldspar (KAlSi3O8)

Sunstone (Andesine-Labradorite Feldspar ((Ca,Na)(Al,Si)4O8)) — mineral

Sunstone

Andesine-Labradorite Feldspar ((Ca,Na)(Al,Si)4O8)

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Clear Quartz Cluster (Silicon Dioxide (SiO2)) — mineral

Clear Quartz Cluster

Silicon Dioxide (SiO2)

Ocean Jasper (Orbicular Jasper/Microcrystalline Quartz (SiO2)) — sedimentary

Ocean Jasper

Orbicular Jasper/Microcrystalline Quartz (SiO2)