Rock Identifier

Category

Not A Rock Or Mineral

Browse not a rock or mineral specimens identified by the Rock Identifier community.

Learn about Not A Rock Or Mineral in the encyclopedia

Claystone

Shale

Rock Salt

Rock Gypsum

Coral Rock

Asphalt Rock

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Albite

Potassium Feldspar

Potassium Feldspar

Halite

Dolomite

Limonite Concretion (Limonite (Hydrated iron(III) oxide-hydroxides, FeO(OH)·nH2O)) — sedimentary

Limonite Concretion

Limonite (Hydrated iron(III) oxide-hydroxides, FeO(OH)·nH2O)

Unakite (Altered Granite (Orthoclase + Epidote + Quartz)) — metamorphic

Unakite

Altered Granite (Orthoclase + Epidote + Quartz)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Rhodochrosite Pebble (MnCO3 (Manganese Carbonate)) — mineral

Rhodochrosite Pebble

MnCO3 (Manganese Carbonate)

Sandstone (Limonitic/Iron-stained) (Sandstone (containing Quartz, SiO2, and Limonite, FeO(OH)·nH2O)) — sedimentary

Sandstone (Limonitic/Iron-stained)

Sandstone (containing Quartz, SiO2, and Limonite, FeO(OH)·nH2O)

Granite Pebble (Pink Feldspar-rich) (Granite) — igneous

Granite Pebble (Pink Feldspar-rich)

Granite

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Milky quartz (quartz-rich rock fragment) (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz (quartz-rich rock fragment)

Quartz, silicon dioxide (SiO₂)

Copper slag or vesicular basalt with copper minerals (Industrial slag / Basaltic matrix with secondary copper minerals) — igneous

Copper slag or vesicular basalt with copper minerals

Industrial slag / Basaltic matrix with secondary copper minerals

Bivalve Fossil (Bivalvia (Phylum Mollusca)) — Fossil

Bivalve Fossil

Bivalvia (Phylum Mollusca)

Weathered granite fragment (Granite; chiefly quartz (SiO₂), feldspar, and mica) — igneous

Weathered granite fragment

Granite; chiefly quartz (SiO₂), feldspar, and mica

Quartz Vein in River Siltstone (Crystalline Quartz (SiO2) in Siliclastic Matrix) — sedimentary

Quartz Vein in River Siltstone

Crystalline Quartz (SiO2) in Siliclastic Matrix

Orthoclase Feldspar (Orthoclase (KAlSi3O8)) — mineral

Orthoclase Feldspar

Orthoclase (KAlSi3O8)

Quartz Pebble (Iron-Stained) (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (Iron-Stained)

Silicon Dioxide (SiO2)

Mantle Xenolith in Basalt (Peridotite Xenolith in Basalt) — igneous

Mantle Xenolith in Basalt

Peridotite Xenolith in Basalt

Banded Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Banded Gneiss

Gneiss (High-grade metamorphic rock)

Sandstone (Ferruginous) (Clastic Sedimentary Rock (Litharenite)) — sedimentary

Sandstone (Ferruginous)

Clastic Sedimentary Rock (Litharenite)

Fossilized Bone (Vertebrate fossil (mineralized bone)) — fossil

Fossilized Bone

Vertebrate fossil (mineralized bone)

Milky Quartz with Mica and Pyrite (Quartz (SiO2) with Muscovite (KAl2(AlSi3O10)(OH)2) and Pyrite (FeS2)) — mineral

Milky Quartz with Mica and Pyrite

Quartz (SiO2) with Muscovite (KAl2(AlSi3O10)(OH)2) and Pyrite (FeS2)

Quartz (Druzy/Macro-crystalline) (Silicon Dioxide (SiO2)) — mineral

Quartz (Druzy/Macro-crystalline)

Silicon Dioxide (SiO2)

Quartz (Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Snowflake Obsidian (Volcanic Glass with Spherulite Inclusions (primarily SiO2)) — igneous

Snowflake Obsidian

Volcanic Glass with Spherulite Inclusions (primarily SiO2)

Granodiorite (River Cobble) (Granodiorite (contains Quartz, Plagioclase Feldspar, Biotite Mica)) — igneous

Granodiorite (River Cobble)

Granodiorite (contains Quartz, Plagioclase Feldspar, Biotite Mica)

Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

White Quartz (Silicon Dioxide (SiO2)) — mineral

White Quartz

Silicon Dioxide (SiO2)

Fossil Shell (Phylum Mollusca (Gastropod fossil)) — fossil

Fossil Shell

Phylum Mollusca (Gastropod fossil)

Amygdaloidal Basalt (Basalt with secondary amygdule minerals (likely Epidote or Chlorite)) — igneous

Amygdaloidal Basalt

Basalt with secondary amygdule minerals (likely Epidote or Chlorite)

Quartz Fragment (Silicon Dioxide (SiO2)) — mineral

Quartz Fragment

Silicon Dioxide (SiO2)

Banded gneiss (likely amphibolite-rich gneiss) (Banded gneiss; composition commonly quartz, feldspar, mica and/or amphibole) — metamorphic

Banded gneiss (likely amphibolite-rich gneiss)

Banded gneiss; composition commonly quartz, feldspar, mica and/or amphibole

Red Sandstone (Quartz Arenite (iron-stained) / SiO2) — sedimentary

Red Sandstone

Quartz Arenite (iron-stained) / SiO2

Banded Agate (Tumbled Pebble) (Silicon Dioxide (SiO2)) — mineral

Banded Agate (Tumbled Pebble)

Silicon Dioxide (SiO2)

Quartz (Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Banded Agate (Carnelian-Agate) (Silicon Dioxide (SiO2)) — mineral

Banded Agate (Carnelian-Agate)

Silicon Dioxide (SiO2)

Quartz (Small Fragment) (Silicon Dioxide (SiO2)) — mineral

Quartz (Small Fragment)

Silicon Dioxide (SiO2)

Rose Quartz (or Quartzite) (Silicon Dioxide (SiO2)) — mineral

Rose Quartz (or Quartzite)

Silicon Dioxide (SiO2)

Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Greenstone (Metamorphosed Mafic Igneous Rock) — metamorphic

Greenstone

Metamorphosed Mafic Igneous Rock

Basalt (Extrusive Igneous Rock (Mafic)) — igneous

Basalt

Extrusive Igneous Rock (Mafic)

Granite (River Pebble) (Phaneritic intrusive igneous rock (Felsic)) — igneous

Granite (River Pebble)

Phaneritic intrusive igneous rock (Felsic)

Barite (Barium sulfate (BaSO4)) — mineral

Barite

Barium sulfate (BaSO4)

Granite (Polished Pebble) (Phaneritic Plutonic Rock (primarily Orthoclase and Quartz)) — igneous

Granite (Polished Pebble)

Phaneritic Plutonic Rock (primarily Orthoclase and Quartz)