Rock Identifier

Category

Amorphous Solid

Browse amorphous solid specimens identified by the Rock Identifier community.

Iron Slag (Anthropogenic Iron Silicate) — industrial byproduct

Iron Slag

Anthropogenic Iron Silicate

industrial byproduct

Limonite Concretion (Limonite (FeO(OH)·nH2O)) — sedimentary

Limonite Concretion

Limonite (FeO(OH)·nH2O)

Fulgurite (Lechatelierite (Silica glass), typically SiO2) — mineraloid

Fulgurite

Lechatelierite (Silica glass), typically SiO2

Fulgurite (Luechatelierite (SiO2 glass)) — mineraloid

Fulgurite

Luechatelierite (SiO2 glass)

Limonite (Iron Ore) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Amber (Succinite (fossilized resin)) — Organic Mineraloid

Amber

Succinite (fossilized resin)

Organic Mineraloid

Obsidian (Volcanic Glass (predominantly SiO2)) — igneous

Obsidian

Volcanic Glass (predominantly SiO2)

Limonite/Goethite (Iron Ore) (Hydrous ferric oxides (FeO(OH)·nH2O)) — mineral

Limonite/Goethite (Iron Ore)

Hydrous ferric oxides (FeO(OH)·nH2O)

Amber (specifically Red or Cherry Amber) (Succinite (Resinite); Chemical formula: C10H16O) — Mineraloid

Amber (specifically Red or Cherry Amber)

Succinite (Resinite); Chemical formula: C10H16O

Gossan (Limonite/Goethite) (Hydrated iron oxides (primarily FeO(OH)·nH2O)) — mineral

Gossan (Limonite/Goethite)

Hydrated iron oxides (primarily FeO(OH)·nH2O)

Bauxite (Bauxite (Al(OH)3, AlO(OH))) — sedimentary

Bauxite

Bauxite (Al(OH)3, AlO(OH))

Pumice (Pumice (a highly vesicular volcanic rock)) — igneous

Pumice

Pumice (a highly vesicular volcanic rock)

Amber (Succinite) — mineral

Amber

Succinite

Obsidian (Volcanic glass (SiO2 - Silicon Dioxide with impurities)) — igneous

Obsidian

Volcanic glass (SiO2 - Silicon Dioxide with impurities)

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

Chrysocolla

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

Dendritic Opal (Merlinite) (Hydrated Silica with Manganese/Iron oxide inclusions (SiO2·nH2O)) — mineral

Dendritic Opal (Merlinite)

Hydrated Silica with Manganese/Iron oxide inclusions (SiO2·nH2O)

Anthracite Coal (Anthracite (Metamorphosed Bituminous Coal)) — sedimentary

Anthracite Coal

Anthracite (Metamorphosed Bituminous Coal)

Ironstone Concretion / Limonite Node (Goethite and Limonite (FeO(OH) nH2O)) — sedimentary

Ironstone Concretion / Limonite Node

Goethite and Limonite (FeO(OH) nH2O)

Opalite (Man-made glass (traditionally simulated Opal)) — mineral

Opalite

Man-made glass (traditionally simulated Opal)

Amber (Succinite (C10H16O)) — mineraloid

Amber

Succinite (C10H16O)

Asphalt (Bituminous pavement) (Bituminous concrete / Asphalt) — Sedimentary (Anthropogenic)

Asphalt (Bituminous pavement)

Bituminous concrete / Asphalt

Sedimentary (Anthropogenic)

Moqui Marble (Concretion) (Iron oxide concretion (Goethite/Hematite and Sandstone)) — sedimentary

Moqui Marble (Concretion)

Iron oxide concretion (Goethite/Hematite and Sandstone)

Obsidian (Volcanic Glass (SiO2 - Silicon Dioxide with impurities)) — Igneous

Obsidian

Volcanic Glass (SiO2 - Silicon Dioxide with impurities)

Synthetic Wolf Plush (Non-mineral) (Canis lupus similis (Prop material: Polyester & Synthetic fibers)) — Synthetic material/Textile

Synthetic Wolf Plush (Non-mineral)

Canis lupus similis (Prop material: Polyester & Synthetic fibers)

Synthetic material/Textile

Amber (Succinite (with a generalized formula of C10H16O)) — mineral

Amber

Succinite (with a generalized formula of C10H16O)

Red Coral (with Hematite and Black Pearl accents) (Corallium rubrum (Calcium Carbonate, CaCO3)) — mineral

Red Coral (with Hematite and Black Pearl accents)

Corallium rubrum (Calcium Carbonate, CaCO3)

Amber (Succinite) — Organic Gemstone (sedimentary associations)

Amber

Succinite

Organic Gemstone (sedimentary associations)

Amber (Succinite (fossilized resin)) — Mineral

Amber

Succinite (fossilized resin)

Black Obsidian (Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)) — igneous

Black Obsidian

Obsidian (Volcanic Glass), primarily SiO2 (Silicon Dioxide)

Opalite (Man-made opalescent glass (SiO2 + metal oxides)) — mineral (synthetic)

Opalite

Man-made opalescent glass (SiO2 + metal oxides)

mineral (synthetic)

Moqui Marble (Concretion) (Iron Oxide Concretion (Hematite-cemented Sandstone)) — sedimentary

Moqui Marble (Concretion)

Iron Oxide Concretion (Hematite-cemented Sandstone)

Amber (Succinite (a specific high-quality amber from the Baltic)) — Organic Mineraloid

Amber

Succinite (a specific high-quality amber from the Baltic)

Organic Mineraloid

Pumice (Pumice (a highly vesicular volcanic glass)) — igneous

Pumice

Pumice (a highly vesicular volcanic glass)

Limonite (Iron Ore) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Amber (Succiniferous fossil resin (C10H16O)) — mineraloid

Amber

Succiniferous fossil resin (C10H16O)

Anthracite Coal (Anthracite) — metamorphic

Anthracite Coal

Anthracite

Limonite Concretion (Limonite (Hydrated Iron Oxide) FeO(OH)·nH2O) — sedimentary

Limonite Concretion

Limonite (Hydrated Iron Oxide) FeO(OH)·nH2O

Asphalt Concrete (Bituminous Concrete) (Bituminous aggregate) — sedimentary

Asphalt Concrete (Bituminous Concrete)

Bituminous aggregate

Pink Opal (Hydrated Silica (SiO2·nH2O)) — mineral

Pink Opal

Hydrated Silica (SiO2·nH2O)

Shungite (Non-crystalline carbon (similar to anthracite coal or meta-anthracite)) — metamorphic

Shungite

Non-crystalline carbon (similar to anthracite coal or meta-anthracite)

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

Mahogany Obsidian

Volcanic Glass with Hematite/Magnetite inclusions

Sandstone Geode (Ironstone Concretion) (Arenite with Limonite/Hematite matrix (SiO2 with Fe-oxides)) — sedimentary

Sandstone Geode (Ironstone Concretion)

Arenite with Limonite/Hematite matrix (SiO2 with Fe-oxides)