Rock Identifier

Category

Mineral Based Alloy (Anthropogenic)

Browse mineral based alloy (anthropogenic) specimens identified by the Rock Identifier community.

Learn about Mineral Based Alloy (Anthropogenic) in the encyclopedia

Sard

White Obsidian

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Brookite

Talc

Violet Obsidian

Lavender Obsidian

Sandstone (Ferruginous) (Arenite (Fe-rich)) — sedimentary

Sandstone (Ferruginous)

Arenite (Fe-rich)

Sandstone (Arenite (primarily SiO2 with trace Fe2O3)) — sedimentary

Sandstone

Arenite (primarily SiO2 with trace Fe2O3)

Conglomerate (Conglomerate (Clastic Sedimentary Rock)) — sedimentary

Conglomerate

Conglomerate (Clastic Sedimentary Rock)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Kyanite (in Schist Matrix) (Kyanite (Al2SiO5)) — metamorphic

Kyanite (in Schist Matrix)

Kyanite (Al2SiO5)

Sandstone (Red) (Arenite (primarily Quartz, SiO2, with Iron Oxide cement)) — sedimentary

Sandstone (Red)

Arenite (primarily Quartz, SiO2, with Iron Oxide cement)

Gold Nugget (Gold (Au)) — mineral

Gold Nugget

Gold (Au)

Red Sandstone (Arenite (predominantly Quartz with Hematite cementation)) — sedimentary

Red Sandstone

Arenite (predominantly Quartz with Hematite cementation)

Grooved Maun Ball (Maul/Hammerstone-like Concretion) (Calcareous/Ferruginous Concretion in Sandstone Matrix) — sedimentary

Grooved Maun Ball (Maul/Hammerstone-like Concretion)

Calcareous/Ferruginous Concretion in Sandstone Matrix

Limonite (Iron Stone) (Limonite (Hydrated Iron Oxide) - FeO(OH)·nH2O) — mineral

Limonite (Iron Stone)

Limonite (Hydrated Iron Oxide) - FeO(OH)·nH2O

Greenstone (Greenschist facies) (Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)) — metamorphic

Greenstone (Greenschist facies)

Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)

Rough Gemstone Grains (Mixed Sapphires and Quartz) (Corundum (Al2O3) and Quartz (SiO2)) — mineral

Rough Gemstone Grains (Mixed Sapphires and Quartz)

Corundum (Al2O3) and Quartz (SiO2)

Blue Sphalerite (likely dyed or treated Druzy Quartz/Agate) (Zinc Sulfide (ZnS) or Silicon Dioxide (SiO2) with trade-name enhancement) — Mineral

Blue Sphalerite (likely dyed or treated Druzy Quartz/Agate)

Zinc Sulfide (ZnS) or Silicon Dioxide (SiO2) with trade-name enhancement

Breccia (Breccia - Clastic sedimentary rock) — sedimentary

Breccia

Breccia - Clastic sedimentary rock

Chert (Arrowhead variety) (Chert (SiO2)) — sedimentary

Chert (Arrowhead variety)

Chert (SiO2)

Coal (Anthracite / Bituminous) (Organic Sedimentary Rock (Carbon-based)) — sedimentary

Coal (Anthracite / Bituminous)

Organic Sedimentary Rock (Carbon-based)

Chert (Arrowhead Debitage or Flake) (Microcrystalline silica (SiO2)) — sedimentary

Chert (Arrowhead Debitage or Flake)

Microcrystalline silica (SiO2)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Copper Ore (likely Chalcopyrite in Matrix) (Chalcopyrite (CuFeS2)) — mineral

Copper Ore (likely Chalcopyrite in Matrix)

Chalcopyrite (CuFeS2)

Likely calcite fragment (Calcite (CaCO₃), possibly limestone or marble) — mineral

Likely calcite fragment

Calcite (CaCO₃), possibly limestone or marble

Blue calcite (probable) (Calcite — CaCO₃) — mineral

Blue calcite (probable)

Calcite — CaCO₃

Psilomelane (Manganese Ore) (Psilomelane (Ba,H2O)2Mn5O10) — mineral

Psilomelane (Manganese Ore)

Psilomelane (Ba,H2O)2Mn5O10

Beryllonite (Beryllonite (NaBePO4)) — mineral

Beryllonite

Beryllonite (NaBePO4)

Sandstone (Arenite (SiO2 based with various mineral cements)) — sedimentary

Sandstone

Arenite (SiO2 based with various mineral cements)

Sandstone (Arenite (SiO2 based clastic rock)) — sedimentary

Sandstone

Arenite (SiO2 based clastic rock)

Amethyst (Quartz (Silicon Dioxide with iron impurities), SiO2) — mineral

Amethyst

Quartz (Silicon Dioxide with iron impurities), SiO2

Basalt (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Gold (Native Gold (Au)) — mineral

Gold

Native Gold (Au)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Veined Limestone (Sedimentary Calcite-Veined Rock (CaCO3)) — sedimentary

Veined Limestone

Sedimentary Calcite-Veined Rock (CaCO3)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Likely chalcopyrite-bearing sulfide ore (Chalcopyrite (CuFeS₂), possibly with pyrite and/or sphalerite) — mineral

Likely chalcopyrite-bearing sulfide ore

Chalcopyrite (CuFeS₂), possibly with pyrite and/or sphalerite

Likely raw chalcopyrite or bornite specimen (Chalcopyrite (CuFeS₂), possibly bornite (Cu₅FeS₄)) — mineral

Likely raw chalcopyrite or bornite specimen

Chalcopyrite (CuFeS₂), possibly bornite (Cu₅FeS₄)

Sandstone (with banding/weathering) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (with banding/weathering)

Clastic Sedimentary Rock (primarily SiO2)

Green aventurine jade-style cabochon (likely dyed chalcedony or glass imitation) (Quartz/chalcedony, SiO₂; exact material is uncertain from the image) — mineral

Green aventurine jade-style cabochon (likely dyed chalcedony or glass imitation)

Quartz/chalcedony, SiO₂; exact material is uncertain from the image

Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O) — mineral

Chrysocolla

Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O

Silicon (Element Si) — mineral

Silicon

Element Si

Bismuth Crystal (Bismuth (Bi)) — mineral

Bismuth Crystal

Bismuth (Bi)

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

Granite Pebble

Granite (Phaneritic intrusive igneous rock)

Pyrite Concretion (Grapestone) (Iron Sulfide (FeS2) Concretion) — sedimentary

Pyrite Concretion (Grapestone)

Iron Sulfide (FeS2) Concretion

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)