Mineral (Biogenic)

Browse mineral (biogenic) specimens identified by the Rock Identifier community.

Learn about Mineral (Biogenic) in the encyclopedia

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Glauconite

Halite

Hutcheonite

Sperrylite

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Dolomite

Buergerite

Diorite

Diorite (Intermediate intrusive igneous rock)

igneous

Gneiss

Gneiss (Metamorphic Rock)

metamorphic

Gneiss

metamorphic

Granite

Granite (Felsic Plutonic Rock)

igneous

Granodiorite

igneous

Azurite Malachite (Mixed)

Azurite-Malachite; Azurite: Cu3(CO3)2(OH)2 / Malachite: Cu2CO3(OH)2

mineral

Gneiss (likely Granitic Gneiss)

Gneiss

metamorphic

Diorite

Diorite (Intermediate intrusive igneous rock)

igneous

Granite

Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)

igneous

Granite Gneiss

Gneiss (High-grade Metamorphic Rock)

metamorphic

Foliated Metamorphic Rock (likely Gneiss or Schist)

Gneissic Metamorphic Rock

metamorphic

Limestone with Calcite Veins

Calcium Carbonate (CaCO3)

sedimentary

Banded Gneiss

Gneiss (high-grade metamorphic silicate rock)

metamorphic

Gneiss

Gneiss (high-grade metamorphic rock)

metamorphic

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

mineral

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Volcanic Rock)

Igneous

Granite

Granite (phaneritic felsic intrusive rock)

igneous

Proustite

Proustite (Ag3AsS3)

mineral

Pyrite in Matrix (Gold-colored Chalcopyrite or Pyrite)

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

mineral

Limonite (Ironstone Concretion)

Hydrous ferric oxides (FeO(OH)·nH2O)

mineral

Limonite

Limonite (Hydrous iron oxides, predominantly Goethite FeO(OH)·nH2O)

mineral

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

mineral

Limonite Sandstone

Ferruginous Sandstone (Hydrated Iron Oxide)

sedimentary

Limonite (Iron Ore)

FeO(OH)·nH2O

mineral

Schist

metamorphic

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

mineral

Fossil Shark Tooth

Odontaspididae (Sand Tiger Shark family)

fossil

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

mineral

Gneiss (specifically Granite Gneiss)

Gneiss (High-grade Regional Metamorphic Rock)

metamorphic

Vanadinite

Lead Chlorovanadate, Pb5(VO4)3Cl

mineral

Not a rock, mineral, or geological specimen

N/A

Sandstone with Ironstone Concretion

Arenite with Ferruginous Cement

sedimentary

Sandstone

Arenite (clastic sedimentary rock)

sedimentary

Mica Group Minerals

There isn't a single scientific name as 'Mica' refers to a group of phyllosilicate minerals. Common scientific names include Muscovite (KAl₂ (AlSi₃O₁₀)(OH)₂), Biotite (K(Mg,Fe)₃AlSi₃O₁₀(OH)₂), Phlogopite (KMg₃AlSi₃O₁₀(OH)₂), and Lepidolite (K(Li,Al)₃(Al,Si,Rb)₄O₁₀(F,OH)₂).

Mineral