Rock Identifier

Category

Man Made Byproduct (Non Geological)

Browse man made byproduct (non geological) specimens identified by the Rock Identifier community.

Chert (and Jasper/Chalcedony mixture) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (and Jasper/Chalcedony mixture)

Microcrystalline Quartz (SiO2)

sedimentary
Sandstone (Ferruginous) (Arenite (Fe2O3 rich)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe2O3 rich)

sedimentary
Iron Slag (Ferrous Slag (Silicate/Oxide mixture)) — industrial byproduct (anthropogenic)

Iron Slag

Ferrous Slag (Silicate/Oxide mixture)

industrial byproduct (anthropogenic)
Sandstone (Arenite) — sedimentary

Sandstone

Arenite

sedimentary
Diamond (Diamond (pure carbon C)) — mineral

Diamond

Diamond (pure carbon C)

mineral
Hypersthene (or Enstatite/Ferrosilite) (Orthopyroxene series (Mg,Fe)SiO3 - specifically, historically hypersthene (intermediate member) now referred to as Enstatite (Mg-rich) or Ferrosilite (Fe-rich)) — Mineral

Hypersthene (or Enstatite/Ferrosilite)

Orthopyroxene series (Mg,Fe)SiO3 - specifically, historically hypersthene (intermediate member) now referred to as Enstatite (Mg-rich) or Ferrosilite (Fe-rich)

Mineral
Specular Hematite (Specularite) (Iron Oxide (Fe2O3)) — mineral

Specular Hematite (Specularite)

Iron Oxide (Fe2O3)

mineral
Chert (Chalk-associated Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Chalk-associated Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

sedimentary
Serpentinite (Serpentinite) — metamorphic

Serpentinite

Serpentinite

metamorphic
African Turquoise (Jasper) (Polychrome African Jasper (often marketed as 'African Turquoise' due to its color, but it is not true turquoise)) — Rock

African Turquoise (Jasper)

Polychrome African Jasper (often marketed as 'African Turquoise' due to its color, but it is not true turquoise)

Rock
Orthoclase Feldspar (KAlSi3O8 (Potassium Aluminum Silicate)) — Mineral

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

Mineral
Ferrochrome Slag (Anthropogenic silicate/oxide glass (Complex silicate matrix with Cr-Fe-Si inclusions)) — Industrial byproduct (often confused with igneous rocks or meteorites)

Ferrochrome Slag

Anthropogenic silicate/oxide glass (Complex silicate matrix with Cr-Fe-Si inclusions)

Industrial byproduct (often confused with igneous rocks or meteorites)
Pink Granite (Crystalline Granite) (Igneous Intrusive Rock (Felsic Plutonic)) — igneous

Pink Granite (Crystalline Granite)

Igneous Intrusive Rock (Felsic Plutonic)

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

Granite

Granite (Felsic Plutonic Rock)

igneous
Chert (Fossiliferous) (Silicon dioxide (SiO2)) — sedimentary

Chert (Fossiliferous)

Silicon dioxide (SiO2)

sedimentary
Quartz (SiO₂ (Silicon Dioxide)) — Mineral

Quartz

SiO₂ (Silicon Dioxide)

Mineral
Limestone (Sedimentary Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Sedimentary Calcium Carbonate (CaCO3)

sedimentary
Granite (Granite (Phaneritic Quartz-Feldspar Rock)) — igneous

Granite

Granite (Phaneritic Quartz-Feldspar Rock)

igneous
Basalt (Water-worn Pebble) (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt (Water-worn Pebble)

Basalt (Aphanitic Mafic Igneous Rock)

igneous
Smoky Quartz Cluster (Smoky Quartz (Silicon Dioxide - SiO2)) — mineral

Smoky Quartz Cluster

Smoky Quartz (Silicon Dioxide - SiO2)

mineral
Caliche (also known as hardpan, calcrete, kankar) (Primarily composed of calcium carbonate (CaCO₃), often mixed with other minerals like quartz, clay minerals, and iron oxides.) — Mineral

Caliche (also known as hardpan, calcrete, kankar)

Primarily composed of calcium carbonate (CaCO₃), often mixed with other minerals like quartz, clay minerals, and iron oxides.

Mineral
Carnelian (Carnelian Chalcedony (SiO2)) — mineral

Carnelian

Carnelian Chalcedony (SiO2)

mineral
Sandstone (River Cobble) (Clastic sedimentary rock (primarily SiO2 with various lithic fragments)) — sedimentary

Sandstone (River Cobble)

Clastic sedimentary rock (primarily SiO2 with various lithic fragments)

sedimentary
Amethyst (Quartz (SiO2) with trace iron impurities) — Mineral

Amethyst

Quartz (SiO2) with trace iron impurities

Mineral
Sapphire (Corundum) (Corundum (Al2O3), variety Sapphire) — Mineral

Sapphire (Corundum)

Corundum (Al2O3), variety Sapphire

Mineral
Marble (Metamorphosed Limestone/Dolomite) — metamorphic

Marble

Metamorphosed Limestone/Dolomite

metamorphic
Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

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

Pearl

Calcium Carbonate (CaCO3) with Conchiolin

mineral
Quartz (Silicon Dioxide (SiO2)) — Mineral

Quartz

Silicon Dioxide (SiO2)

Mineral
Rutilated Quartz (Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions) — mineral

Rutilated Quartz

Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions

mineral
Red Jasper (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) - Microcrystalline Quartz

sedimentary
Granite (Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)) — igneous

Granite

Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)

igneous
Jade (Jadeite or Nephrite) — Mineral/Mineraloid

Jade

Jadeite or Nephrite

Mineral/Mineraloid
Lapis Lazuli (Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)₈[(S,Cl,SO₄,OH)₂|(Al₆Si₆O₂₄)], with varying amounts of Calcite, Pyrite, and Sodalite.)) — Mineral

Lapis Lazuli

Lapis Lazuli (a rock composed primarily of Lazurite (Na,Ca)₈[(S,Cl,SO₄,OH)₂|(Al₆Si₆O₂₄)], with varying amounts of Calcite, Pyrite, and Sodalite.)

Mineral
Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

igneous
Chert (Flint variety) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Flint variety)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

sedimentary
Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

mineral
Scoria (Scoria (a vesicular basalt or andesite)) — igneous

Scoria

Scoria (a vesicular basalt or andesite)

igneous
Sandstone (Arenicola (comprising mostly Quartz, SiO2)) — sedimentary

Sandstone

Arenicola (comprising mostly Quartz, SiO2)

sedimentary
Rough Diamond (Pure Carbon (C)) — mineral

Rough Diamond

Pure Carbon (C)

mineral
Bituminous Coal (with Anthracite or Vitrinite inclusion) (Organic-rich Sedimentary Rock (Carboniferous classification)) — sedimentary

Bituminous Coal (with Anthracite or Vitrinite inclusion)

Organic-rich Sedimentary Rock (Carboniferous classification)

sedimentary
Siltstone (Siltstone) — sedimentary

Siltstone

Siltstone

sedimentary