Rock Identifier

Category

Anthropogenic Specimen (Man Made)

Browse anthropogenic specimen (man made) specimens identified by the Rock Identifier community.

Learn about Anthropogenic Specimen (Man Made) in the encyclopedia

Opalite

Emerald in Matrix

Emerald in Matrix

Morganite Crystal

Morganite Crystal

Emerald Crystal

Emerald Crystal

Aquamarine Matrix

Aquamarine Matrix

Aquamarine Crystal

Aquamarine Crystal

Mushroom Tourmaline

Mushroom Tourmaline

Map Jasper

Goldstone

Blue Goldstone

Mandarin Garnet

Mandarin Garnet

Andalusite

Flint (SiO2 (Cryptocrystalline Quartz)) — sedimentary

Flint

SiO2 (Cryptocrystalline Quartz)

Diamond (or Diamond Simulant) (Carbon (C) or Cubic Zirconia (ZrO2)) — gemstone

Diamond (or Diamond Simulant)

Carbon (C) or Cubic Zirconia (ZrO2)

Seashell Fragment (Calcium carbonate (CaCO3) - primarily Aragonite or Calcite) — fossil

Seashell Fragment

Calcium carbonate (CaCO3) - primarily Aragonite or Calcite

Diamond (Cut Gemstone) (Carbon (C)) — gemstone

Diamond (Cut Gemstone)

Carbon (C)

Gold (Elemental Metal) (Gold (Au)) — Mineral

Gold (Elemental Metal)

Gold (Au)

Blue Lace Agate (Chalcedony (SiO2) with trace inclusions) — mineral

Blue Lace Agate

Chalcedony (SiO2) with trace inclusions

Diabase (Dolerite) (Diabase / Dolerite) — igneous

Diabase (Dolerite)

Diabase / Dolerite

Slag (Industrial Glass/Metal) (Ferrous slag or Glassy silicate byproduct) — Antropogenic rock (Man-made)

Slag (Industrial Glass/Metal)

Ferrous slag or Glassy silicate byproduct

Antropogenic rock (Man-made)

Chert (Flint / Quartz Nodule) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Flint / Quartz Nodule)

Microcrystalline Quartz (SiO2)

Chert (White Chert/Flint) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (White Chert/Flint)

Microcrystalline Quartz (SiO2)

Gypsum (Satin Spar / Alabaster variety) (Calcium Sulfate Dihydrate (CaSO4·2H2O)) — mineral

Gypsum (Satin Spar / Alabaster variety)

Calcium Sulfate Dihydrate (CaSO4·2H2O)

Coquina (Biogenic Limestone (Coquina)) — sedimentary

Coquina

Biogenic Limestone (Coquina)

Fossilized Coral (Coquina/Limestone) (Cnidaria Anthozoa (Fossilized)) — sedimentary

Fossilized Coral (Coquina/Limestone)

Cnidaria Anthozoa (Fossilized)

Coquina (Bioclastic Limestone (composed primarily of CaCO3)) — sedimentary

Coquina

Bioclastic Limestone (composed primarily of CaCO3)

Diamond (Diamond (pure Carbon, C)) — mineral

Diamond

Diamond (pure Carbon, C)

Granite Cobble/Pebble (Granite) — Igneous

Granite Cobble/Pebble

Granite

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)

Quartzite (Metamorphic Quartzite (primarily SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (primarily SiO2)

Quartzite (Metamorphic Quartzite (primarily SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (primarily SiO2)

Granite (weathered pebble) (Granite (plutonic igneous rock)) — Igneous

Granite (weathered pebble)

Granite (plutonic igneous rock)

Turquoise (Hydrous phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)) — gemstone

Turquoise

Hydrous phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)

Slate (Metamorphic Pelitic Rock) — metamorphic

Slate

Metamorphic Pelitic Rock

Granodiorite (Intrusive Igneous Rock) — igneous

Granodiorite

Intrusive Igneous Rock

Chert or Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Chert or Jasper

Microcrystalline Quartz (SiO2)

Granite (Plutonic Igneous Rock (composed typically of SiO2, Al2O3, K2O, Na2O, CaO)) — igneous

Granite

Plutonic Igneous Rock (composed typically of SiO2, Al2O3, K2O, Na2O, CaO)

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

Chert (Flint)

Silicon Dioxide (SiO2)

Chalk (Micrite (primarily Calcium Carbonate or CaCO3)) — sedimentary

Chalk

Micrite (primarily Calcium Carbonate or CaCO3)

Chert (variations include Flint) (Microcrystalline or cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (variations include Flint)

Microcrystalline or cryptocrystalline Quartz (SiO2)

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)

Quartzite (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite

Metamorphic Quartzite (SiO2)

Chert (varietal: Flint/Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (varietal: Flint/Jasper)

Silicon Dioxide (SiO2)

Pearl (Biogenic Mineraloid) (Calcium carbonate (CaCO3) primarily as Aragonite) — mineral

Pearl (Biogenic Mineraloid)

Calcium carbonate (CaCO3) primarily as Aragonite

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Turquoise (Turquoise, CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Turquoise, CuAl6(PO4)4(OH)8·4H2O

Polished white chalcedony or milky quartz pebble (Chalcedony, microcrystalline quartz (SiO₂), possibly with iron-oxide staining or a minor mineral inclusion) — mineral

Polished white chalcedony or milky quartz pebble

Chalcedony, microcrystalline quartz (SiO₂), possibly with iron-oxide staining or a minor mineral inclusion

Granite, possibly granodiorite (Coarse-grained felsic plutonic rock; chiefly quartz (SiO₂), potassium feldspar and plagioclase feldspar, with biotite and/or hornblende) — igneous

Granite, possibly granodiorite

Coarse-grained felsic plutonic rock; chiefly quartz (SiO₂), potassium feldspar and plagioclase feldspar, with biotite and/or hornblende

Orgonite Pyramid (containing Amethyst and mixed minerals) (Silicon Dioxide (SiO2) in synthetic resin) — gemstone

Orgonite Pyramid (containing Amethyst and mixed minerals)

Silicon Dioxide (SiO2) in synthetic resin

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Red Jasper (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Chert (Chert (Microcrystalline Quartz)) — sedimentary

Chert

Chert (Microcrystalline Quartz)

Quartzite (Metamorphic Quartz Sandstone) — metamorphic

Quartzite

Metamorphic Quartz Sandstone