Rock Identifier

Category

Organic (Zoogenic)

Browse organic (zoogenic) specimens identified by the Rock Identifier community.

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Pink Quartzite (Quartzite (SiO2)) — metamorphic

Pink Quartzite

Quartzite (SiO2)

Fossilized Brachiopod/Bivalve in Limestone (Brachiopoda or Bivalvia fossil in Calcite/Limestone (CaCO3)) — sedimentary

Fossilized Brachiopod/Bivalve in Limestone

Brachiopoda or Bivalvia fossil in Calcite/Limestone (CaCO3)

Chert (Nodule) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Nodule)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Quartz Vein in Host Rock (Silicon Dioxide (SiO2) within Sedimentary or Igneous Matrix) — igneous

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within Sedimentary or Igneous Matrix

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Chert (Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2)

Yellow Quartzite (Quartzite (SiO2 with iron oxide inclusions)) — metamorphic

Yellow Quartzite

Quartzite (SiO2 with iron oxide inclusions)

Chert (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert

Chert (Microcrystalline Quartz, SiO2)

Chert (Chert (SiO2)) — sedimentary

Chert

Chert (SiO2)

Fossiliferous Limestone with Brachiopod (Limestone (Calcium Carbonate, CaCO3) with Phylum Brachiopoda fossil) — sedimentary

Fossiliferous Limestone with Brachiopod

Limestone (Calcium Carbonate, CaCO3) with Phylum Brachiopoda fossil

Mookaite Jasper (Radiolarite (Silica with iron oxides like Goethite and Hematite)) — sedimentary

Mookaite Jasper

Radiolarite (Silica with iron oxides like Goethite and Hematite)

Chert (variety Gray or Dark Chert) (Silicon Dioxide (SiO2)) — sedimentary

Chert (variety Gray or Dark Chert)

Silicon Dioxide (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Anthracite Coal (Anthracite) — metamorphic

Anthracite Coal

Anthracite

Pink Granite (Phaneritic intrusive igneous rock (high Potassium-Feldspar)) — igneous

Pink Granite

Phaneritic intrusive igneous rock (high Potassium-Feldspar)

Chert (Yellow Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Yellow Jasper)

Silicon Dioxide (SiO2)

Chert (Yellow Jasper/River Pebble) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Yellow Jasper/River Pebble)

Microcrystalline Quartz (SiO2)

Yellow Quartzite (Silicon Dioxide (SiO2)) — metamorphic

Yellow Quartzite

Silicon Dioxide (SiO2)

Diorite (Phaneritic Intermediate Plutonic Rock (Diorite)) — igneous

Diorite

Phaneritic Intermediate Plutonic Rock (Diorite)

Chalk (Limestone variant) (Calcium Carbonate (CaCO3)) — sedimentary

Chalk (Limestone variant)

Calcium Carbonate (CaCO3)

Quartzite pebble (Quartzite (primarily SiO2)) — metamorphic

Quartzite pebble

Quartzite (primarily SiO2)

Granite (Granite (Alkali-feldspar granite)) — igneous

Granite

Granite (Alkali-feldspar granite)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Pink Granite (Phaneritic Plutonic Felsic Rock (Granite)) — igneous

Pink Granite

Phaneritic Plutonic Felsic Rock (Granite)

Hag Stone (Perforated Chert (Microcrystalline Silica, SiO2)) — sedimentary

Hag Stone

Perforated Chert (Microcrystalline Silica, SiO2)

Gold-bearing Quartz with Pyrite (Quartz (SiO2) with Gold (Au) and Pyrite (FeS2)) — mineral

Gold-bearing Quartz with Pyrite

Quartz (SiO2) with Gold (Au) and Pyrite (FeS2)

Diorite (weathered) (Intermediate plutonic igneous rock) — igneous

Diorite (weathered)

Intermediate plutonic igneous rock

Granite (Granite (composed primarily of Quartz SiO2, Feldspar (KAlSi3O8), and Mica)) — igneous

Granite

Granite (composed primarily of Quartz SiO2, Feldspar (KAlSi3O8), and Mica)

Quartzite Cobble (Quartzite (SiO2)) — metamorphic

Quartzite Cobble

Quartzite (SiO2)

Quartzite (Metamorphosed Sandstone (SiO2)) — metamorphic

Quartzite

Metamorphosed Sandstone (SiO2)

Quartz Vein in Metamorphic Rock (Silicon Dioxide (SiO2) within Metasedimentary host) — metamorphic

Quartz Vein in Metamorphic Rock

Silicon Dioxide (SiO2) within Metasedimentary host

Fossilized Horn Coral (Rugosa) — fossil

Fossilized Horn Coral

Rugosa

Orange Calcite (Calcite (Calcium Carbonate - CaCO3)) — mineral

Orange Calcite

Calcite (Calcium Carbonate - CaCO3)

Mookaite Jasper (Silicified Radiolarite (SiO2)) — sedimentary

Mookaite Jasper

Silicified Radiolarite (SiO2)

Nephrite Jade (Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2), a variety of Actinolite-Tremolite) — metamorphic

Nephrite Jade

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2), a variety of Actinolite-Tremolite

Honey Calcite Sphere (Calcium Carbonate (CaCO3)) — mineral

Honey Calcite Sphere

Calcium Carbonate (CaCO3)

Mookaite Jasper (Silicified Porcellanite (SiO2 with impurities)) — sedimentary

Mookaite Jasper

Silicified Porcellanite (SiO2 with impurities)

Granite (Granite (Felsic Plutonic Rock)) — igneous

Granite

Granite (Felsic Plutonic Rock)

Chert (Flint) (Chert (Silicon Dioxide, SiO2)) — sedimentary

Chert (Flint)

Chert (Silicon Dioxide, SiO2)

Quartzite with Chert inclusions (Metamorphosed Quartz-rich Rock (SiO2)) — metamorphic

Quartzite with Chert inclusions

Metamorphosed Quartz-rich Rock (SiO2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)