Rock Identifier

Category

Mineral Description (Anthropogenic Material)

Browse mineral description (anthropogenic material) specimens identified by the Rock Identifier community.

Learn about Mineral Description (Anthropogenic Material) in the encyclopedia

Peat

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Buergerite

Sandstone (Sandstone (SiO2 predominant)) — sedimentary

Sandstone

Sandstone (SiO2 predominant)

Limestone (Calcium Carbonate (CaCO3)) — sedimentary

Limestone

Calcium Carbonate (CaCO3)

Coquina (Bioclastic Limestone) — sedimentary

Coquina

Bioclastic Limestone

Sandstone (Sedimentary Rock (Quartz arenite/Arkose)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite/Arkose)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Pegmatite (Quartz with Tourmaline/Biotite inclusions) (Igneous Pegmatite) — igneous

Pegmatite (Quartz with Tourmaline/Biotite inclusions)

Igneous Pegmatite

Red Sandstone (Arenite (Ferruginous Sandstone)) — sedimentary

Red Sandstone

Arenite (Ferruginous Sandstone)

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

Sandstone (Ferruginous)

Arenite (Fe-rich)

Fluorite (Calcium fluoride (CaF2)) — mineral

Fluorite

Calcium fluoride (CaF2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Clear Quartz (Faceted) (Silicon dioxide (SiO2)) — gemstone

Clear Quartz (Faceted)

Silicon dioxide (SiO2)

Quartz (River Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Yellow or Honey Quartz (Silicon Dioxide (SiO2)) — mineral

Yellow or Honey Quartz

Silicon Dioxide (SiO2)

Tumbled prehnite (probable) (Prehnite, Ca₂Al₂Si₃O₁₀(OH)₂; possibly epidote- or chlorite-bearing) — mineral

Tumbled prehnite (probable)

Prehnite, Ca₂Al₂Si₃O₁₀(OH)₂; possibly epidote- or chlorite-bearing

Milky quartz (likely) (Quartz, silicon dioxide (SiO₂)) — mineral

Milky quartz (likely)

Quartz, silicon dioxide (SiO₂)

Porphyry (Basaltic / Andesitic Porphyry) (Porphyritic Basalt / Porphyritic Andesite) — igneous

Porphyry (Basaltic / Andesitic Porphyry)

Porphyritic Basalt / Porphyritic Andesite

Jasper (Banded Argillite/Chert mix) (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper (Banded Argillite/Chert mix)

Silicon Dioxide (SiO2) with iron oxide inclusions

Likely polished bronzite or serpentine-rich rock (Probable bronzite, an iron-bearing orthopyroxene (Mg,Fe)SiO₃; exact identification requires testing) — mineral

Likely polished bronzite or serpentine-rich rock

Probable bronzite, an iron-bearing orthopyroxene (Mg,Fe)SiO₃; exact identification requires testing

Sandstone (Quartzose Sandstone (Sedimentary Rock)) — sedimentary

Sandstone

Quartzose Sandstone (Sedimentary Rock)

Petrified Wood (Silicified Wood (SiO2)) — fossil

Petrified Wood

Silicified Wood (SiO2)

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

Sandstone

Arenicola (comprising mostly Quartz, SiO2)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon dioxide (SiO2)

Mixed rock and mineral collection (Multiple specimens; visible pieces may include quartz, calcite, agate/chalcedony, jasper, and dyed or coated materials) — mineral

Mixed rock and mineral collection

Multiple specimens; visible pieces may include quartz, calcite, agate/chalcedony, jasper, and dyed or coated materials

Sandstone (Sandstone (clastic sedimentary rock)) — sedimentary

Sandstone

Sandstone (clastic sedimentary rock)

Rhodonite (Rhodonite, manganese inosilicate — MnSiO₃; the specimen may include quartz, feldspar, and black manganese-oxide minerals in the matrix) — mineral

Rhodonite

Rhodonite, manganese inosilicate — MnSiO₃; the specimen may include quartz, feldspar, and black manganese-oxide minerals in the matrix

Sandstone (Pebble) (Sandstone) — sedimentary

Sandstone (Pebble)

Sandstone

Sandstone (Arenite (SiO2 with minor iron oxides)) — sedimentary

Sandstone

Arenite (SiO2 with minor iron oxides)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

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

Sandstone

Clastic sedimentary rock (primarily SiO2)

Sandstone (with potentially high Feldspar/Arkose content) (Clastic sedimentary rock (SiO2 dominated)) — sedimentary

Sandstone (with potentially high Feldspar/Arkose content)

Clastic sedimentary rock (SiO2 dominated)

Sandstone (Arenite (SiO2 variety)) — sedimentary

Sandstone

Arenite (SiO2 variety)

Sandstone (Quartzose) (Arenite (SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (SiO2)

Iron-stained weathered stone (tentative) (Undetermined; possibly weathered iron-rich basalt or concretion) — mineral

Iron-stained weathered stone (tentative)

Undetermined; possibly weathered iron-rich basalt or concretion

Yellow Jasper (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — mineral

Yellow Jasper

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Malachite in Matrix (Copper Carbonate Hydroxide - Cu2CO3(OH)2) — mineral

Malachite in Matrix

Copper Carbonate Hydroxide - Cu2CO3(OH)2

Copper Ore with Malachite and Chalcocite (Copper-bearing Mineral Assemblage (Cu2CO3(OH)2 + Cu2S)) — mineral

Copper Ore with Malachite and Chalcocite

Copper-bearing Mineral Assemblage (Cu2CO3(OH)2 + Cu2S)

Amazonite (Amazonite (KAlSi3O8, a triclinic variety of Potassium Feldspar)) — mineral

Amazonite

Amazonite (KAlSi3O8, a triclinic variety of Potassium Feldspar)

Biotite (Black Mica) (Biotite - K(Mg,Fe)3(AlSi3O10)(F,OH)2) — mineral

Biotite (Black Mica)

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

Sunstone (Aventurine Feldspar ((Ca,Na)(Al,Si)4O8)) — mineral

Sunstone

Aventurine Feldspar ((Ca,Na)(Al,Si)4O8)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)