Rock Identifier

Category

Amorphous Solid

Browse amorphous solid specimens identified by the Rock Identifier community.

Learn about Amorphous Solid in the encyclopedia

Tripolite

Rainbow Obsidian

Rainbow Obsidian

Oil Shale

Apache Tears

Grandite Garnet

Geyserite

Gold Sheen Obsidian

Black Obsidian

Diatomaceous Earth

Shungite

Flame Obsidian

Smoky Obsidian

Nephrite Jade (Tremolite-Actinolite solid solution series [Ca2(Mg,Fe)5Si8O22(OH)2]) — metamorphic

Nephrite Jade

Tremolite-Actinolite solid solution series [Ca2(Mg,Fe)5Si8O22(OH)2]

Nephrite Jade (Tremolite-Actinolite solid solution series [Ca2(Mg,Fe)5Si8O22(OH)2]) — metamorphic

Nephrite Jade

Tremolite-Actinolite solid solution series [Ca2(Mg,Fe)5Si8O22(OH)2]

Sandstone (Pebble) (Sandstone (arenite, arkose, wacke depending on composition)) — sedimentary

Sandstone (Pebble)

Sandstone (arenite, arkose, wacke depending on composition)

Opal (Hydrated amorphous silica (SiO2·nH2O)) — mineral

Opal

Hydrated amorphous silica (SiO2·nH2O)

Limonite (Yellow Ochre) (Hydrated Iron Oxide (FeO(OH)·nH2O)) — mineral

Limonite (Yellow Ochre)

Hydrated Iron Oxide (FeO(OH)·nH2O)

Obsidian with Matrix (Volcanic Glass (SiO2)) — igneous

Obsidian with Matrix

Volcanic Glass (SiO2)

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

Snowflake Obsidian

Volcanic Glass (SiO2 + impurities)

Red Jasper (Jasper (a cryptocrystalline variety of Quartz, SiO₂)) — Sedimentary Rock

Red Jasper

Jasper (a cryptocrystalline variety of Quartz, SiO₂)

Sedimentary Rock

Nephrite Jade / Greenstone (Tremolite-Actinolite solid solution series [Ca2(Mg,Fe)5Si8O22(OH)2]) — metamorphic

Nephrite Jade / Greenstone

Tremolite-Actinolite solid solution series [Ca2(Mg,Fe)5Si8O22(OH)2]

Nephrite Jade (Tremolite-Actinolite solid solution series (Ca2(Mg,Fe)5Si8O22(OH)2)) — metamorphic

Nephrite Jade

Tremolite-Actinolite solid solution series (Ca2(Mg,Fe)5Si8O22(OH)2)

Limonite (Iron Ore) (Limonite (Hydrous iron(III) oxide-hydroxide mixture, FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (Hydrous iron(III) oxide-hydroxide mixture, FeO(OH)·nH2O)

Obsidian (Volcanic glass (high silica SiO2)) — igneous

Obsidian

Volcanic glass (high silica SiO2)

Snowflake Obsidian (Spherulitic Obsidian (Amorphous volcanic glass with Phenocrysts of Cristobalite)) — igneous

Snowflake Obsidian

Spherulitic Obsidian (Amorphous volcanic glass with Phenocrysts of Cristobalite)

Green Opal (Hydrated amorphous silica (SiO2·nH2O)) — mineral

Green Opal

Hydrated amorphous silica (SiO2·nH2O)

Fire Opal (Common/Precious in Matrix) (Hydrated Silica (SiO2·nH2O)) — mineral

Fire Opal (Common/Precious in Matrix)

Hydrated Silica (SiO2·nH2O)

Red Jasper (possibly) (Jasper (a variety of Chalcedony, SiO2)) — Mineral

Red Jasper (possibly)

Jasper (a variety of Chalcedony, SiO2)

Chipped Glass/Plastic Fragment (Silicon dioxide (SiO2) for glass (amorphous) or various polymer compounds for plastic) — Man-made material (simulant/artifact)

Chipped Glass/Plastic Fragment

Silicon dioxide (SiO2) for glass (amorphous) or various polymer compounds for plastic

Man-made material (simulant/artifact)

Black Obsidian (Obsidian (Amorphous Silicon Dioxide)) — igneous

Black Obsidian

Obsidian (Amorphous Silicon Dioxide)

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

Gold Sheen Obsidian

Volcanic Glass (SiO2 + impurities)

Amber (Succinates) — mineraloid

Amber

Succinates

Amber (Simulated/Faturan Style) (Resin mix (Likely Phenolic/Celluloid if synthetic, Succinite if natural)) — Organic Gemstone (not a mineral)

Amber (Simulated/Faturan Style)

Resin mix (Likely Phenolic/Celluloid if synthetic, Succinite if natural)

Organic Gemstone (not a mineral)

Black Obsidian (Amorphous volcanic glass (primarily SiO2)) — igneous

Black Obsidian

Amorphous volcanic glass (primarily SiO2)

Brown Jasper (Jasper (a cryptocrystalline variety of Quartz, SiO2)) — Mineral, specifically a variety of Quartz

Brown Jasper

Jasper (a cryptocrystalline variety of Quartz, SiO2)

Mineral, specifically a variety of Quartz

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

Gold Sheen Obsidian

Volcanic Glass (SiO2 + impurities)

Slag Glass (Silicon dioxide with impurities) — mineral

Slag Glass

Silicon dioxide with impurities

Silver Sheen Obsidian (Volcanic Glass (SiO2)) — igneous

Silver Sheen Obsidian

Volcanic Glass (SiO2)

Sea Glass (Amorphous silicon dioxide (glass)) — mineral

Sea Glass

Amorphous silicon dioxide (glass)

Obsidian (Volcanic Glass (Amorphous SiO2)) — igneous

Obsidian

Volcanic Glass (Amorphous SiO2)

Black Obsidian (Amorphous volcanic glass (SiO2)) — igneous

Black Obsidian

Amorphous volcanic glass (SiO2)

Obsidian (Amorphous volcanic glass (primarily SiO2)) — igneous

Obsidian

Amorphous volcanic glass (primarily SiO2)

Sea Glass (Amorphous Silicon Dioxide (Man-made glass weathered by nature)) — mineral

Sea Glass

Amorphous Silicon Dioxide (Man-made glass weathered by nature)

Menilite Opal (Goddess Stone) (Menilite Opalescent Silex (Amorphous Hydrated Silica)) — sedimentary

Menilite Opal (Goddess Stone)

Menilite Opalescent Silex (Amorphous Hydrated Silica)

Sea Glass (Amorphous Silica (Glass) SiO2) — Mineraloid (Man-made origin)

Sea Glass

Amorphous Silica (Glass) SiO2

Mineraloid (Man-made origin)

Obsidian (Gold Sheen) (Obsidian (SiO2 + impurities)) — igneous

Obsidian (Gold Sheen)

Obsidian (SiO2 + impurities)

Flint (Sedimentary cryptocrystalline quartz (SiO2)) — sedimentary

Flint

Sedimentary cryptocrystalline quartz (SiO2)

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

Black Obsidian

Volcanic Glass (SiO2 with impurities)

Opal (Hydrated silica (SiO2 · nH2O)) — mineraloid

Opal

Hydrated silica (SiO2 · nH2O)

Pearl (Calcium Carbonate (CaCO3) with Conchiolin) — mineral

Pearl

Calcium Carbonate (CaCO3) with Conchiolin

Amber (Succinates (Fossilized Resin)) — mineral

Amber

Succinates (Fossilized Resin)

Limonite Concretion (Goethite-rich Concretion (FeO(OH))) — sedimentary

Limonite Concretion

Goethite-rich Concretion (FeO(OH))

Obsidian (Volcanic Glass (High silica amorphous rock)) — igneous

Obsidian

Volcanic Glass (High silica amorphous rock)

Obsidian (Volcanic Glass (Amorphous SiO2)) — igneous

Obsidian

Volcanic Glass (Amorphous SiO2)