Rock Identifier

Category

Anthropogenic Material (Man Made Rock)

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

Sodalite (Sodalite: Na8(Al6Si6O24)Cl2) — igneous

Sodalite

Sodalite: Na8(Al6Si6O24)Cl2

Black Marble (Recrystallized Calcite (CaCO3)) — metamorphic

Black Marble

Recrystallized Calcite (CaCO3)

Chert (Iron-stained) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline Quartz (SiO2)

Slag Glass (Glassy Silicate Residue) — industrial byproduct

Slag Glass

Glassy Silicate Residue

industrial byproduct

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

Quartz (Common or Milky)

Silicon Dioxide (SiO2)

Siltstone (Siltstone (primarily composed of silica and clay minerals)) — sedimentary

Siltstone

Siltstone (primarily composed of silica and clay minerals)

Gneiss (Banded Gneiss) (Gneiss) — metamorphic

Gneiss (Banded Gneiss)

Gneiss

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Green Chert (Microcrystalline Quartz (SiO2)) — sedimentary

Green Chert

Microcrystalline Quartz (SiO2)

Greenstone (Greenschist / Meta-basalt) — metamorphic

Greenstone

Greenschist / Meta-basalt

Chert (within Limestone) (Silicon Dioxide (SiO2)) — sedimentary

Chert (within Limestone)

Silicon Dioxide (SiO2)

Quartzite (Quartzite (Primary mineral: SiO2)) — metamorphic

Quartzite

Quartzite (Primary mineral: SiO2)

Quartzite (Quartzite (composed primarily of SiO2)) — metamorphic

Quartzite

Quartzite (composed primarily of SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

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

Chert (Pebble)

Silicon Dioxide (SiO2)

Crackle Quartz (Dyed) (SiO2 (Silicon Dioxide) - Treated) — mineral

Crackle Quartz (Dyed)

SiO2 (Silicon Dioxide) - Treated

Rhodonite (Rhodonite (MnSiO3)) — mineral

Rhodonite

Rhodonite (MnSiO3)

Quartzite (Quartzite (SiO2 with impurities)) — metamorphic

Quartzite

Quartzite (SiO2 with impurities)

Tektite (Tektite (high-silica natural glass)) — Mineraloid

Tektite

Tektite (high-silica natural glass)

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

Chert (Flint)

Microcrystalline Quartz (SiO2)

Chert (Chert (SiO2)) — sedimentary

Chert

Chert (SiO2)

Chert (Light Grey / Flint variant) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Light Grey / Flint variant)

Cryptocrystalline Quartz (SiO2)

Coral Fossil (Agatized Coral or Petoskey Stone) (Hexagonaria percarinata (if Petoskey) or generally Scleractinia (Agatized Coral)) — Sedimentary/Fossil

Coral Fossil (Agatized Coral or Petoskey Stone)

Hexagonaria percarinata (if Petoskey) or generally Scleractinia (Agatized Coral)

Sedimentary/Fossil

Petrified Wood (Silicified wood (Quartz/Chalcedony/SiO2)) — sedimentary

Petrified Wood

Silicified wood (Quartz/Chalcedony/SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Chrysocolla (Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O) — mineral

Chrysocolla

Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O

Petrified Wood (Silicified Wood (primarily Quartz / Chalcedony: SiO2)) — sedimentary

Petrified Wood

Silicified Wood (primarily Quartz / Chalcedony: SiO2)

Quartz (Iron-stained) (Silicon Dioxide (SiO2) with Hematite/Limonite impurities) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Mica Schist (Mica Schist (primarily Muscovite and/or Biotite composition)) — metamorphic

Mica Schist

Mica Schist (primarily Muscovite and/or Biotite composition)

Amethyst (Rough) (Quartz, SiO2) — mineral

Amethyst (Rough)

Quartz, SiO2

Limonite (Iron Ore) (Limonite (Hydrous iron(III) oxide-hydroxide mixture, FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (Hydrous iron(III) oxide-hydroxide mixture, FeO(OH)·nH2O)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Red Jasper (Chalcedony) (Silicon Dioxide (SiO2) with iron oxide inclusions) — mineral

Red Jasper (Chalcedony)

Silicon Dioxide (SiO2) with iron oxide inclusions

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Jasper (Red-Brown) (Silicon Dioxide (SiO2) with Iron Oxide impurities) — sedimentary

Jasper (Red-Brown)

Silicon Dioxide (SiO2) with Iron Oxide impurities

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Red Quartzite (Stream-rounded Cobble) (Meta-quartzite (SiO2 with Hematite impurities)) — metamorphic

Red Quartzite (Stream-rounded Cobble)

Meta-quartzite (SiO2 with Hematite impurities)

Composite Turquoise or Reconstituted Turquoise with Copper inclusions (CuAl6(PO4)4(OH)8·4H2O (Turquoise) mixed with matrix and copper/bronze flakes) — mineral

Composite Turquoise or Reconstituted Turquoise with Copper inclusions

CuAl6(PO4)4(OH)8·4H2O (Turquoise) mixed with matrix and copper/bronze flakes

Biotite on Quartz (Biotite Mica (K(Mg,Fe)3AlSi3O10(F,OH)2)) — mineral

Biotite on Quartz

Biotite Mica (K(Mg,Fe)3AlSi3O10(F,OH)2)

Ferruginous Sandstone (Arenite with Iron Oxide cement (Fe2O3 / FeO(OH))) — sedimentary

Ferruginous Sandstone

Arenite with Iron Oxide cement (Fe2O3 / FeO(OH))

Bronzite ((Mg,Fe)SiO3) — Mineral

Bronzite

(Mg,Fe)SiO3

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)