Rock Identifier

Category

Industrial Byproduct (Anthropogenic Rock)

Browse industrial byproduct (anthropogenic rock) specimens identified by the Rock Identifier community.

Learn about Industrial Byproduct (Anthropogenic Rock) in the encyclopedia

Rock Gypsum

Coral Rock

Asphalt Rock

Rock Salt

Calc-Silicate Rock

Calc-Silicate Rock

Talc-carbonate Rock

Talc-carbonate Rock

Adirondack Garnet

Adirondack Garnet

Anorthosite

Cataclasite

Peridotite

Phosphorite

Gondite

Light-colored granite or granitic gneiss (Granite; typically quartz + feldspar + mica (variable composition)) — igneous

Light-colored granite or granitic gneiss

Granite; typically quartz + feldspar + mica (variable composition)

Fossil shell fragment (likely brachiopod or bivalve) (Indeterminate fossilized carbonate shell; likely Brachiopoda or Bivalvia) — fossil

Fossil shell fragment (likely brachiopod or bivalve)

Indeterminate fossilized carbonate shell; likely Brachiopoda or Bivalvia

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Sandstone (River Cobble) (Sandstone (principally composed of Quartz, SiO2)) — sedimentary

Sandstone (River Cobble)

Sandstone (principally composed of Quartz, SiO2)

Quartz Pebble (Feldspathic / Chert Pebble) (Silicon Dioxide (SiO2) / Potassium Feldspar (KAlSi3O8)) — sedimentary

Quartz Pebble (Feldspathic / Chert Pebble)

Silicon Dioxide (SiO2) / Potassium Feldspar (KAlSi3O8)

River-worn Chert (Microcrystalline Quartz (SiO2)) — sedimentary

River-worn Chert

Microcrystalline Quartz (SiO2)

Pebble (likely Sandstone or Granitic Pebble) (Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)) — Rock (likely Sedimentary)

Pebble (likely Sandstone or Granitic Pebble)

Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)

Rock (likely Sedimentary)

Chert (Jasper-like) (SiO2 (Cryptocrystalline Quartz)) — Sedimentary

Chert (Jasper-like)

SiO2 (Cryptocrystalline Quartz)

Yellow Agate (Banded Chalcedony) (Silicon Dioxide (SiO2)) — sedimentary

Yellow Agate (Banded Chalcedony)

Silicon Dioxide (SiO2)

Sandstone (Weathered Cobble) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (Weathered Cobble)

Clastic sedimentary rock (primarily SiO2)

Iron meteorite fragment (probable) (Fe–Ni metallic meteorite, commonly octahedrite (kamacite–taenite)) — meteorite

Iron meteorite fragment (probable)

Fe–Ni metallic meteorite, commonly octahedrite (kamacite–taenite)

Diamond (set in Gold) (Diamond (pure carbon, C)) — mineral

Diamond (set in Gold)

Diamond (pure carbon, C)

Chert (specifically Flint or Jasper variant) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Flint or Jasper variant)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Rough Diamond (Carbon (C)) — gemstone

Rough Diamond

Carbon (C)

Fossilized bone, likely a tooth or jaw fragment (Mineralized vertebrate bone; taxonomic identification requires clearer diagnostic anatomy) — fossil

Fossilized bone, likely a tooth or jaw fragment

Mineralized vertebrate bone; taxonomic identification requires clearer diagnostic anatomy

Tumbled pink quartz (probable rose quartz) (Quartz, silicon dioxide (SiO₂), commonly colored by trace elements and microscopic inclusions) — mineral

Tumbled pink quartz (probable rose quartz)

Quartz, silicon dioxide (SiO₂), commonly colored by trace elements and microscopic inclusions

Tumbled blue sodalite (probable) (Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂) — mineral

Tumbled blue sodalite (probable)

Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Ruby (Corundum (Al2O3:Cr)) — gemstone

Ruby

Corundum (Al2O3:Cr)

Black Sapphire (Corundum (Al2O3)) — gemstone

Black Sapphire

Corundum (Al2O3)

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Yellow Calcite (Calcite (CaCO3)) — mineral

Yellow Calcite

Calcite (CaCO3)

Quartz (Milky or White Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky or White Quartz)

Silicon Dioxide (SiO2)

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

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

Limestone (or Calcite Pebble) (Calcium Carbonate (CaCO3)) — sedimentary

Limestone (or Calcite Pebble)

Calcium Carbonate (CaCO3)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Diamond (Carbon (C)) — gemstone

Diamond

Carbon (C)

Diamond (or Diamond Simulant) (Carbon (C)) — gemstone

Diamond (or Diamond Simulant)

Carbon (C)

Blue Kyanite in Schist (Al2SiO5 in Mica Schist) — metamorphic

Blue Kyanite in Schist

Al2SiO5 in Mica Schist

Milky Quartz (Ferruginous) (Silicon Dioxide (SiO2)) — mineral

Milky Quartz (Ferruginous)

Silicon Dioxide (SiO2)

Orange Calcite (Calcium Carbonate (CaCO3)) — mineral

Orange Calcite

Calcium Carbonate (CaCO3)

Mica Schist with Garnet (Almandine-Mica Schist) — metamorphic

Mica Schist with Garnet

Almandine-Mica Schist

Agate (Silicon Dioxide (Chalcedony), SiO2) — sedimentary

Agate

Silicon Dioxide (Chalcedony), SiO2

Manganese Nodule (Polymetallic Nodule (Hydrous manganese and iron oxides)) — mineral

Manganese Nodule

Polymetallic Nodule (Hydrous manganese and iron oxides)

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

Quartz Pebble (Iron-Stained Quartz)

Silicon Dioxide (SiO2)

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

Garnet (Rough Almandine Crystal)

Almandine Garnet (Fe3Al2(SiO4)3)

Rough Diamond / Clear Quartz (C (Carbon) or SiO2 (Silicon Dioxide)) — mineral

Rough Diamond / Clear Quartz

C (Carbon) or SiO2 (Silicon Dioxide)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Chalcedony (Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)) — mineral

Chalcedony

Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)