Rock Identifier

Category

Organic Mineraloid

Browse organic mineraloid specimens identified by the Rock Identifier community.

Learn about Organic Mineraloid in the encyclopedia

Shungite

Sapropel

Bituminous Shale

Bituminous Shale

Black Shale

Petrified Wood

Amber

Jet

Oil Shale

Peat

Pearl

Lizard Skin Jasper

Opalized Wood

Black Obsidian (Volcanic Glass (Amorphous SiO2)) — igneous

Black Obsidian

Volcanic Glass (Amorphous SiO2)

Obsidian (Volcanic Glass (Amorphous SiO2)) — igneous

Obsidian

Volcanic Glass (Amorphous SiO2)

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Black Obsidian (Volcanic Glass) — igneous

Black Obsidian

Volcanic Glass

Polished black stone, likely shungite (Shungite; carbon-rich mineraloid composed mainly of amorphous carbon, with silica and other minerals) — mineral

Polished black stone, likely shungite

Shungite; carbon-rich mineraloid composed mainly of amorphous carbon, with silica and other minerals

Obsidian (Volcanic glass) — igneous

Obsidian

Volcanic glass

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Red Coral (Corallium rubrum (Calcium Carbonate, CaCO3 with Carotenoid pigments)) — Mineraloid (Organic Gemstone)

Red Coral

Corallium rubrum (Calcium Carbonate, CaCO3 with Carotenoid pigments)

Mineraloid (Organic Gemstone)

Amber (Succinite (formula varies, primarily C10H16O)) — Mineraloid (Organic)

Amber

Succinite (formula varies, primarily C10H16O)

Mineraloid (Organic)

Pearl (Imitation or Cultured) (Calcium Carbonate (Aragonite/Calcite) - CaCO3) — Mineraloid (Organic)

Pearl (Imitation or Cultured)

Calcium Carbonate (Aragonite/Calcite) - CaCO3

Mineraloid (Organic)

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Amber (Succinite (specifically for Baltic amber; general formula C10H16O)) — Mineraloid (Organic)

Amber

Succinite (specifically for Baltic amber; general formula C10H16O)

Mineraloid (Organic)

Amber (Succinicum (Organic compound, primarily C10H16O)) — Organic Gemstone (Mineraloid)

Amber

Succinicum (Organic compound, primarily C10H16O)

Organic Gemstone (Mineraloid)

Anthracite Coal (Anthracite (Carbon-rich mineraloid)) — metamorphic

Anthracite Coal

Anthracite (Carbon-rich mineraloid)

Obsidian (Volcanic Glass (Silica-rich glass)) — igneous

Obsidian

Volcanic Glass (Silica-rich glass)

Obsidian (Volcanic glass) — igneous

Obsidian

Volcanic glass

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Obsidian (Volcanic glass) — igneous

Obsidian

Volcanic glass

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Mahogany Obsidian (Volcanic glass (high silica) with inclusions of Magnetite or Hematite) — igneous

Mahogany Obsidian

Volcanic glass (high silica) with inclusions of Magnetite or Hematite

Obsidian (Volcanic glass (SiO2 + impurities)) — igneous

Obsidian

Volcanic glass (SiO2 + impurities)

Obsidian (Volcanic Glass (Amorphous SiO2)) — igneous

Obsidian

Volcanic Glass (Amorphous SiO2)

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Limonite or Ironstone Nodule (FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)) — sedimentary

Limonite or Ironstone Nodule

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

Black Obsidian (Volcanic Glass (predominantly SiO2)) — igneous

Black Obsidian

Volcanic Glass (predominantly SiO2)

Amber (Amber (Fossilized Tree Resin)) — Mineral

Amber

Amber (Fossilized Tree Resin)

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Black Obsidian (Volcanic Glass (Amorphous SiO2)) — igneous

Black Obsidian

Volcanic Glass (Amorphous SiO2)

Black Obsidian (Volcanic Glass (Amorphous SiO2 with trace impurities)) — igneous

Black Obsidian

Volcanic Glass (Amorphous SiO2 with trace impurities)

Obsidian (Volcanic Glass (Amorphous silicon dioxide with impurities)) — igneous

Obsidian

Volcanic Glass (Amorphous silicon dioxide with impurities)

Black Obsidian (Volcanic glass) — igneous

Black Obsidian

Volcanic glass

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Obsidian (Volcanic Glass (SiO2 + impurities)) — igneous

Obsidian

Volcanic Glass (SiO2 + impurities)

Fulgurite (Fulgurite (Lechatelierite)) — metamorphic

Fulgurite

Fulgurite (Lechatelierite)

Black Obsidian (Volcanic Glass (SiO2 + impurities)) — Igneous

Black Obsidian

Volcanic Glass (SiO2 + impurities)

Amber (Succinite (Resinite)) — Organic Crystal (Mineraloid)

Amber

Succinite (Resinite)

Organic Crystal (Mineraloid)

Obsidian (Volcanic Glass) — igneous

Obsidian

Volcanic Glass

Tumbled black stone, likely black obsidian (Obsidian — volcanic glass, primarily SiO₂) — igneous

Tumbled black stone, likely black obsidian

Obsidian — volcanic glass, primarily SiO₂

Gold Sheen Obsidian (Volcanic Glass (SiO2 + Fe3O4 / Gas Inclusions)) — igneous

Gold Sheen Obsidian

Volcanic Glass (SiO2 + Fe3O4 / Gas Inclusions)

Obsidian (Volcanic glass) — igneous

Obsidian

Volcanic glass