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

Unidentified Dark Mineral or Rock (Indeterminate (Likely Silicon Dioxide or Carbon-based)) — mineral

Unidentified Dark Mineral or Rock

Indeterminate (Likely Silicon Dioxide or Carbon-based)

River Stone (Quartzite/Siltstone mixture) (Silicon Dioxide (SiO2) based metamorphosed sandstone) — metamorphic or sedimentary

River Stone (Quartzite/Siltstone mixture)

Silicon Dioxide (SiO2) based metamorphosed sandstone

metamorphic or sedimentary

Blue Quartzite (Quartzite (silicon dioxide, SiO2)) — metamorphic

Blue Quartzite

Quartzite (silicon dioxide, SiO2)

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

Sandstone (Ferruginous)

Arenite (Fe-rich)

Sedimentary Breccia (Clastic Breccia (CaCO3/SiO2 matrix)) — sedimentary

Sedimentary Breccia

Clastic Breccia (CaCO3/SiO2 matrix)

Conglomerate (Conglomerate (Clastic Sedimentary Rock)) — sedimentary

Conglomerate

Conglomerate (Clastic Sedimentary Rock)

Beryl (var. Aquamarine/Blue Beryl) in Quartz Matrix (Beryllium Aluminum Silicate (Be3Al2Si6O18)) — mineral

Beryl (var. Aquamarine/Blue Beryl) in Quartz Matrix

Beryllium Aluminum Silicate (Be3Al2Si6O18)

Native Copper (Tumbled Nugget) (Cu (Native Element)) — mineral

Native Copper (Tumbled Nugget)

Cu (Native Element)

Aquamarine (Beryllium aluminum silicate (Be3Al2Si6O18)) — mineral

Aquamarine

Beryllium aluminum silicate (Be3Al2Si6O18)

Arsenopyrite (Arsenopyrite (FeAsS)) — mineral

Arsenopyrite

Arsenopyrite (FeAsS)

Celestine (Celestite) (Strontium sulfate (SrSO4)) — mineral

Celestine (Celestite)

Strontium sulfate (SrSO4)

Sandstone (Quartzose) (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone (Quartzose)

Arenite (composed primarily of SiO2)

Pebble (Lithic fragment / Weathered rock fragment) — sedimentary

Pebble

Lithic fragment / Weathered rock fragment

Chert (Chert (SiO2)) — sedimentary

Chert

Chert (SiO2)

Aragonite (specifically Mexican Marbled Onyx) (Aragonite (Calcium Carbonate, CaCO3)) — mineral

Aragonite (specifically Mexican Marbled Onyx)

Aragonite (Calcium Carbonate, CaCO3)

Rhodonite Tumbled Chips (Manganese silicate (Mn,Fe,Mg,Ca)SiO3) — mineral

Rhodonite Tumbled Chips

Manganese silicate (Mn,Fe,Mg,Ca)SiO3

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Schist (Schist (Crystalline Metamorphic Rock)) — metamorphic

Schist

Schist (Crystalline Metamorphic Rock)

Bronzite (Enstatite (magnesium iron silicate), (Mg,Fe2+)SiO3) — mineral

Bronzite

Enstatite (magnesium iron silicate), (Mg,Fe2+)SiO3

Black Tourmaline (Schorl) (Schorl (Sodium iron silicate hydroxide boron silicate); NaFe3Al6(BO3)3Si6O18(OH)4) — mineral

Black Tourmaline (Schorl)

Schorl (Sodium iron silicate hydroxide boron silicate); NaFe3Al6(BO3)3Si6O18(OH)4

Possibly red jasper or chalcedony (Microcrystalline quartz (SiO₂), possibly iron-oxide-stained chalcedony) — mineral

Possibly red jasper or chalcedony

Microcrystalline quartz (SiO₂), possibly iron-oxide-stained chalcedony

Blue Kyanite (Kyanite (Al2SiO5)) — mineral

Blue Kyanite

Kyanite (Al2SiO5)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

N/A (The provided image is a storyboard/digital document) — N/A

N/A (The provided image is a storyboard/digital document)

Red Sandstone (Arenite) — sedimentary

Red Sandstone

Arenite

Sandstone (Arenite (Secondary classification based on grain size)) — sedimentary

Sandstone

Arenite (Secondary classification based on grain size)

Bismuth crystal (Bismuth (Bi), commonly laboratory-grown) — mineral

Bismuth crystal

Bismuth (Bi), commonly laboratory-grown

Native copper nugget (Copper (Cu), native element) — mineral

Native copper nugget

Copper (Cu), native element

Aquamarine (Beryllium aluminum silicate (Be3Al2Si6O18)) — mineral

Aquamarine

Beryllium aluminum silicate (Be3Al2Si6O18)

Native copper nugget (Native copper (Cu)) — mineral

Native copper nugget

Native copper (Cu)

Aquamarine (Pale variety) (Beryl (Be3Al2Si6O18)) — mineral

Aquamarine (Pale variety)

Beryl (Be3Al2Si6O18)

Bismuth (Bismuth (element Bi) with oxidized thin-film interference layer) — mineral

Bismuth

Bismuth (element Bi) with oxidized thin-film interference layer

Silicon (Crystalline Silicon (Si)) — mineral

Silicon

Crystalline Silicon (Si)

Michigan Float Copper (Native Copper (Cu)) — mineral

Michigan Float Copper

Native Copper (Cu)

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

Sandstone

Arenite (primarily SiO2 with trace Fe2O3)

Tumbled milky quartz (Quartz, silicon dioxide (SiO₂)) — mineral

Tumbled milky quartz

Quartz, silicon dioxide (SiO₂)

Polished honey/pink calcite heart (Calcite, calcium carbonate (CaCO₃)) — mineral

Polished honey/pink calcite heart

Calcite, calcium carbonate (CaCO₃)

Weathered iron-rich stone, possibly limonite-bearing rock (Limonite/goethite mixture (hydrated iron oxides), identification uncertain from image) — mineral

Weathered iron-rich stone, possibly limonite-bearing rock

Limonite/goethite mixture (hydrated iron oxides), identification uncertain from image

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

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

Sandstone (Red)

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

Fossilized Crinoid Stem Cross-Section (Crinoidea) — fossil

Fossilized Crinoid Stem Cross-Section

Crinoidea

Sandstone (Arenite (Sedimentary rock composed of sand-sized grains)) — sedimentary

Sandstone

Arenite (Sedimentary rock composed of sand-sized grains)