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

Dyed Quartz Geode (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Dyed Quartz Geode

Silicon Dioxide (SiO2) with artificial pigment

Chalcopyrite in Quartz (Gossan/Iron Hat) (CuFeS2 (Chalcopyrite) with SiO2 (Quartz)) — mineral

Chalcopyrite in Quartz (Gossan/Iron Hat)

CuFeS2 (Chalcopyrite) with SiO2 (Quartz)

Concretion (Sedimentary Concretion) — sedimentary

Concretion

Sedimentary Concretion

Limestone or Sandstone Cobble (Sedimentary rock (Calcium carbonate or Quartz based)) — sedimentary

Limestone or Sandstone Cobble

Sedimentary rock (Calcium carbonate or Quartz based)

Malachite (Malachite, Cu2CO3(OH)2) — mineral

Malachite

Malachite, Cu2CO3(OH)2

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

Quartz Crystal Cluster

Silicon Dioxide (SiO2)

Crinoid Stem Fossil (Crinoid (Class Crinoidea)) — fossil

Crinoid Stem Fossil

Crinoid (Class Crinoidea)

Grey Basalt or Andesite with Veining (Intermediate to Mafic Extrusive Igneous Rock with Quartz/Calcite Veins) — igneous

Grey Basalt or Andesite with Veining

Intermediate to Mafic Extrusive Igneous Rock with Quartz/Calcite Veins

Granite (Granite) — igneous

Granite

Granite

Fluorite (Calcium fluoride (CaF2)) — mineral

Fluorite

Calcium fluoride (CaF2)

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

Limonite Concretion / Ironstone

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

Chalcopyrite (Copper iron sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper iron sulfide (CuFeS2)

Copper-bearing Quartz Vein in Host Rock (Quartz with Malachite/Chrysocolla staining) — igneous/metamorphic with mineral

Copper-bearing Quartz Vein in Host Rock

Quartz with Malachite/Chrysocolla staining

igneous/metamorphic with mineral

Yellow Fluorite (Calcium Fluoride (CaF2)) — mineral

Yellow Fluorite

Calcium Fluoride (CaF2)

Polished Agate (Yellow/Grey Agate Pendant) (Silicon Dioxide (SiO2)) — mineral

Polished Agate (Yellow/Grey Agate Pendant)

Silicon Dioxide (SiO2)

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

Satin Spar (Gypsum)

Calcium Sulfate Dihydrate (CaSO4·2H2O)

Chalcanthite (Copper(II) sulfate pentahydrate (CuSO4·5H2O)) — mineral

Chalcanthite

Copper(II) sulfate pentahydrate (CuSO4·5H2O)

Rhodochrosite with Quartz (Manganese Carbonate (MnCO3) with Silicon Dioxide (SiO2)) — mineral

Rhodochrosite with Quartz

Manganese Carbonate (MnCO3) with Silicon Dioxide (SiO2)

Galena (Lead Sulfide (PbS)) — mineral

Galena

Lead Sulfide (PbS)

Chalcanthite (Copper(II) sulfate pentahydrate (CuSO4·5H2O)) — mineral

Chalcanthite

Copper(II) sulfate pentahydrate (CuSO4·5H2O)

Desert Rose (Gypsum (CaSO4-2H2O) or Baryte (BaSO4)) — mineral

Desert Rose

Gypsum (CaSO4-2H2O) or Baryte (BaSO4)

Goethite / Limonite Gossan (Hydrated Iron Oxide (FeO(OH))) — sedimentary

Goethite / Limonite Gossan

Hydrated Iron Oxide (FeO(OH))

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Azurite and Malachite (Copper Carbonates: Cu3(CO3)2(OH)2 (Azurite) and Cu2CO3(OH)2 (Malachite)) — mineral

Azurite and Malachite

Copper Carbonates: Cu3(CO3)2(OH)2 (Azurite) and Cu2CO3(OH)2 (Malachite)

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)

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

Chrysocolla

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

Howlite (Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)) — mineral

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Lepidolite (Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)) — mineral

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Pyrite in Matrix (Gold-colored Chalcopyrite or Pyrite) (Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)) — mineral

Pyrite in Matrix (Gold-colored Chalcopyrite or Pyrite)

Iron Sulfide (FeS2) / Copper Iron Sulfide (CuFeS2)

Gypsum (Alabaster variety) (Calcium sulfate dihydrate (CaSO4·2H2O)) — mineral

Gypsum (Alabaster variety)

Calcium sulfate dihydrate (CaSO4·2H2O)

Malachite (Copper carbonate hydroxide Cu2CO3(OH)2) — mineral

Malachite

Copper carbonate hydroxide Cu2CO3(OH)2

Muscovite Mica (Muscovite (Potassium Aluminum Silicate) - KAl2(AlSi3O10)(F,OH)2) — mineral

Muscovite Mica

Muscovite (Potassium Aluminum Silicate) - KAl2(AlSi3O10)(F,OH)2

Bornite (Bornite (Cu5FeS4)) — mineral

Bornite

Bornite (Cu5FeS4)

Geode Nodules / Keokuk Geode (Quartz / Chalcedony Geode (SiO2)) — sedimentary

Geode Nodules / Keokuk Geode

Quartz / Chalcedony Geode (SiO2)

Amber (Fossilized Tree Resin) — gemstone

Amber

Fossilized Tree Resin

Quartz with Tourmaline or Amphibole (Silicon Dioxide with silicate inclusions (SiO2)) — mineral

Quartz with Tourmaline or Amphibole

Silicon Dioxide with silicate inclusions (SiO2)

Green Aventurine (SiO2) — mineral

Green Aventurine

SiO2

Quartz Chip (Silicon Dioxide (SiO2)) — mineral

Quartz Chip

Silicon Dioxide (SiO2)

Quartz / Feldspar Specimen (SiO2 (Quartz) / KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8 (Feldspar Group)) — mineral

Quartz / Feldspar Specimen

SiO2 (Quartz) / KAlSi3O8 - NaAlSi3O8 - CaAl2Si2O8 (Feldspar Group)

Ruby (Raw Corundum) (Al2O3 (Aluminum Oxide)) — mineral

Ruby (Raw Corundum)

Al2O3 (Aluminum Oxide)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Green Slate or Metamorphic Rock (Metamorphic rock (chlorite/actinolite-bearing)) — metamorphic

Green Slate or Metamorphic Rock

Metamorphic rock (chlorite/actinolite-bearing)