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

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Quartz Geode (Quartz (Silicon Dioxide, SiO2) Geode) — sedimentary

Quartz Geode

Quartz (Silicon Dioxide, SiO2) Geode

Gold Ore / Native Gold (Native Gold (Au)) — mineral

Gold Ore / Native Gold

Native Gold (Au)

Chondrite Meteorite (Ordinary Chondrite (S-type asteroid origin)) — igneous

Chondrite Meteorite

Ordinary Chondrite (S-type asteroid origin)

Basalt with Amygdules (Amygdaloidal Basalt) — igneous

Basalt with Amygdules

Amygdaloidal Basalt

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Granite Pebble with Quartz Vein (Granite (Plutonic Igneous Rock) with Quartz (SiO2)) — igneous

Granite Pebble with Quartz Vein

Granite (Plutonic Igneous Rock) with Quartz (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Quartz Geode (Crystalline Silicon Dioxide (SiO2) within a geode structure) — mineral

Quartz Geode

Crystalline Silicon Dioxide (SiO2) within a geode structure

Porphyry (Porphyritic Andesite/Dacite) — igneous

Porphyry

Porphyritic Andesite/Dacite

Scoria (Vesicular Basaltic Glass) — igneous

Scoria

Vesicular Basaltic Glass

Basalt (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Agate (Geode nodule) (Cryptocrystalline Quartz (SiO2)) — mineral

Agate (Geode nodule)

Cryptocrystalline Quartz (SiO2)

Vesicular Basalt (Scoria) (Vesicular Basalt) — igneous

Vesicular Basalt (Scoria)

Vesicular Basalt

Geode (Crystalline Quartz (SiO2) within a nodule) — sedimentary

Geode

Crystalline Quartz (SiO2) within a nodule

Coral Skeleton / Fossil Coral (Scleractinia (Aragonite, CaCO3)) — fossil

Coral Skeleton / Fossil Coral

Scleractinia (Aragonite, CaCO3)

Quartz Geode Fragment (Silicon dioxide (SiO2) within a nodule) — sedimentary

Quartz Geode Fragment

Silicon dioxide (SiO2) within a nodule

Chondrite Meteorite (Stony Meteorite (Ordinary Chondrite)) — igneous

Chondrite Meteorite

Stony Meteorite (Ordinary Chondrite)

Quartz Geode (Crystalline Silicon Dioxide (SiO2) in Geode) — mineral

Quartz Geode

Crystalline Silicon Dioxide (SiO2) in Geode

Ferruginous Quartz (Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)) — mineral

Ferruginous Quartz

Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)

Black Onyx (Silicon Dioxide (SiO2)) — mineral

Black Onyx

Silicon Dioxide (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartzite Pebble (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Garnet (Almandine) (Almandine (Fe3Al2(SiO4)3)) — mineral

Garnet (Almandine)

Almandine (Fe3Al2(SiO4)3)

Scoria (Vesicular Basalt) (Scoria (Hydrated silicate volcanic rock with iron and magnesium)) — igneous

Scoria (Vesicular Basalt)

Scoria (Hydrated silicate volcanic rock with iron and magnesium)

Garnet Schist (Almandine Garnet in Mica Schist (Fe3Al2(SiO4)3)) — metamorphic

Garnet Schist

Almandine Garnet in Mica Schist (Fe3Al2(SiO4)3)

Chondrite Meteorite (Ordinary Chondrite (Undifferentiated Meteorite)) — meteorite

Chondrite Meteorite

Ordinary Chondrite (Undifferentiated Meteorite)

Quartzite (Metamorphosed Quartz Sandstone) — metamorphic

Quartzite

Metamorphosed Quartz Sandstone

Basaltic Tuff / Volcanic Breccia (Pyroclastic Breccia / Lithic Tuff) — igneous

Basaltic Tuff / Volcanic Breccia

Pyroclastic Breccia / Lithic Tuff

Quartzite (Quartzite (SiO2 silicon dioxide)) — metamorphic

Quartzite

Quartzite (SiO2 silicon dioxide)

Chondrite Meteorite (Possibility) (Stony Meteorite (Chondrite)) — igneous

Chondrite Meteorite (Possibility)

Stony Meteorite (Chondrite)

Pearls (Pearl: biomineralized aragonite (CaCO₃) and conchiolin) — gemstone

Pearls

Pearl: biomineralized aragonite (CaCO₃) and conchiolin

Shark Tooth Fossil (Carcharodon / Otodus fossilized tooth (Calcium Phosphate / Hydroxyapatite)) — fossil

Shark Tooth Fossil

Carcharodon / Otodus fossilized tooth (Calcium Phosphate / Hydroxyapatite)

Black Onyx (Silicon dioxide (SiO2) with parallel banded structure) — Mineral (variety of chalcedony)

Black Onyx

Silicon dioxide (SiO2) with parallel banded structure

Mineral (variety of chalcedony)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Red Jasper (Silicon Dioxide (SiO2) with Hematite impurities) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Puddingstone (Polished Pebble) (Conglomerate (Quartz-rich)) — sedimentary

Puddingstone (Polished Pebble)

Conglomerate (Quartz-rich)

Gossan (Iron Cap) (Limonitic Gossan (FeO(OH)·nH2O)) — sedimentary

Gossan (Iron Cap)

Limonitic Gossan (FeO(OH)·nH2O)