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

Satin Spar (often marketed as Selenite) (Fibrous Gypsum (CaSO4·2H2O)) — mineral

Satin Spar (often marketed as Selenite)

Fibrous Gypsum (CaSO4·2H2O)

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

Pink Granite

Granite (Alkali-feldspar granite)

Pyrite Sun (Iron Sulfide (FeS2)) — mineral

Pyrite Sun

Iron Sulfide (FeS2)

Green Aventurine (Aventurine Quartz (SiO2 with Fuchsite inclusions)) — mineral

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Banded Agate (Chalcedony / Silicon Dioxide (SiO2)) — mineral

Banded Agate

Chalcedony / Silicon Dioxide (SiO2)

Dream Amethyst (Chevron Amethyst) (Silicon Dioxide (SiO2) with iron impurities and gamma radiation exposure) — Mineral

Dream Amethyst (Chevron Amethyst)

Silicon Dioxide (SiO2) with iron impurities and gamma radiation exposure

Yellow Jasper (Silicon dioxide (SiO2)) — mineral

Yellow Jasper

Silicon dioxide (SiO2)

Dragon Stone (Dragon Blood Jasper) (Epidote with Pietersite or Red Jasper inclusions (varied SiO2 and Ca2(Al,Fe)3(SiO4)3(OH))) — metamorphic

Dragon Stone (Dragon Blood Jasper)

Epidote with Pietersite or Red Jasper inclusions (varied SiO2 and Ca2(Al,Fe)3(SiO4)3(OH))

Citrine (Quartz (Silicon Dioxide - SiO2)) — mineral

Citrine

Quartz (Silicon Dioxide - SiO2)

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

Amethyst

Amethyst (Silicon Dioxide - SiO2 with impurities of iron)

Rough Green Beryl (Emerald variety) (Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)) — mineral

Rough Green Beryl (Emerald variety)

Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)

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

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

Ruby (Corundum (Al2O3)) — mineral

Ruby

Corundum (Al2O3)

Yellow Aventurine (Quartz (SiO2) with iron-bearing inclusions) — mineral

Yellow Aventurine

Quartz (SiO2) with iron-bearing inclusions

Blue Lace Agate (Cryptocrystalline variety of Quartz (SiO2)) — mineral

Blue Lace Agate

Cryptocrystalline variety of Quartz (SiO2)

Fluorite (specifically Blue John or Banded Fluorite) (Calcium Fluoride (CaF2)) — mineral

Fluorite (specifically Blue John or Banded Fluorite)

Calcium Fluoride (CaF2)

Sandstone Concretion (Omar or Nut Rock) (Sedimentary Concretion (specifically an 'Omarolluk' or Omar)) — sedimentary

Sandstone Concretion (Omar or Nut Rock)

Sedimentary Concretion (specifically an 'Omarolluk' or Omar)

Quartz Crystal (Silicon Dioxide (SiO2)) — mineral

Quartz Crystal

Silicon Dioxide (SiO2)

Honey Calcite (Calcium Carbonate (CaCO3)) — mineral

Honey Calcite

Calcium Carbonate (CaCO3)

Green Calcite (Calcium Carbonate (CaCO3)) — mineral

Green Calcite

Calcium Carbonate (CaCO3)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Milky Quartz with Iron Staining (Silicon Dioxide (SiO2)) — mineral

Milky Quartz with Iron Staining

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)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (Druzy Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Druzy Quartz)

Silicon Dioxide (SiO2)

Tiger's Eye (and Hematite/Jasper Matrix) (SiO2 (Pseudomorph of Quartz after Crocidolite) with Hematite/Magnetite) — mineral

Tiger's Eye (and Hematite/Jasper Matrix)

SiO2 (Pseudomorph of Quartz after Crocidolite) with Hematite/Magnetite

Greenstone (Greenschist (metamorphosed mafic igneous rock)) — metamorphic

Greenstone

Greenschist (metamorphosed mafic igneous rock)

Carnelian (Carnelian (SiO2)) — mineral

Carnelian

Carnelian (SiO2)

Green Jasper (Microcrystalline Quartz (Chalcedony), SiO2) — sedimentary

Green Jasper

Microcrystalline Quartz (Chalcedony), SiO2

Granodiorite (Granodiorite (Intermediate to Felsic Intrusive Rock)) — igneous

Granodiorite

Granodiorite (Intermediate to Felsic Intrusive Rock)

Soapstone / Steatite (Steatite (primarily Talc, Mg3Si4O10(OH)2)) — metamorphic

Soapstone / Steatite

Steatite (primarily Talc, Mg3Si4O10(OH)2)

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

Sandstone (Ferruginous)

Clastic sedimentary rock (SiO2 with Fe2O3)

Mica (Biotite and Muscovite) in Matrix (Potassium aluminum silicate with iron/magnesium (KAl2(AlSi3O10)(F,OH)2 / K(Mg,Fe)3AlSi3O10(F,OH)2)) — igneous

Mica (Biotite and Muscovite) in Matrix

Potassium aluminum silicate with iron/magnesium (KAl2(AlSi3O10)(F,OH)2 / K(Mg,Fe)3AlSi3O10(F,OH)2)

Jade (Jadeite or Nephrite) — Mineral/Mineraloid

Jade

Jadeite or Nephrite

Mineral/Mineraloid

Mahogany Obsidian (Volcanic Glass with Hematite/Magnetite inclusions (SiO2)) — igneous

Mahogany Obsidian

Volcanic Glass with Hematite/Magnetite inclusions (SiO2)

Chert (Flint Nobule) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint Nobule)

Silicon Dioxide (SiO2)

Quartz with Iron Staining (Silicon Dioxide (SiO2)) — mineral

Quartz with Iron Staining

Silicon Dioxide (SiO2)

Moss Agate (Silicon Dioxide (SiO2) with inclusions) — mineral

Moss Agate

Silicon Dioxide (SiO2) with inclusions

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

Pink Granite

Phaneritic Intrusive Igneous Rock (Granite)

Bumblebee Jasper (Fibrous Calcite and Quartz with Volcanic Matter (CaCO3 / SiO2)) — mineral

Bumblebee Jasper

Fibrous Calcite and Quartz with Volcanic Matter (CaCO3 / SiO2)

Red Jasper with Quartz (Microcrystalline Quartz (SiO2)) — sedimentary

Red Jasper with Quartz

Microcrystalline Quartz (SiO2)