Rock Identifier

Category

Mineral (Processed Alloy)

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

Aquamarine (Beryl (Be3Al2Si6O18)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18)

mineral
Native Copper (in coinage alloy) (Copper (Cu)) — mineral

Native Copper (in coinage alloy)

Copper (Cu)

mineral
Mineral Sand (Heavy Mineral Sand Concentrate) (Placer deposit concentrate containing minerals such as ilmenite, rutile, zircon, and magnetite) — mineral

Mineral Sand (Heavy Mineral Sand Concentrate)

Placer deposit concentrate containing minerals such as ilmenite, rutile, zircon, and magnetite

mineral
Blue sodalite beads (Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂) — mineral

Blue sodalite beads

Sodalite, Na₈(Al₆Si₆O₂₄)Cl₂

mineral
Tumbled Hematite with Quartz/Chert (Specular Hematite) (Fe2O3 (Iron Oxide)) — mineral

Tumbled Hematite with Quartz/Chert (Specular Hematite)

Fe2O3 (Iron Oxide)

mineral
Gold and Silver (Metal Components of an Antique Pocket Watch) (Native Gold (Au) and Native Silver (Ag)) — mineral

Gold and Silver (Metal Components of an Antique Pocket Watch)

Native Gold (Au) and Native Silver (Ag)

mineral
Carved quartz (likely rose quartz and green aventurine/quartz) (Quartz, silicon dioxide (SiO₂); green material may be aventurine quartz or serpentine) — gemstone

Carved quartz (likely rose quartz and green aventurine/quartz)

Quartz, silicon dioxide (SiO₂); green material may be aventurine quartz or serpentine

gemstone
Beryl (Aquamarine variety) (Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)) — mineral

Beryl (Aquamarine variety)

Beryllium Aluminum Cyclosilicate (Be3Al2Si6O18)

mineral
Popcorn (Zea mays everta (P. Wilson) (Botanical name for the corn variety)) — Organic/Biogenic

Popcorn

Zea mays everta (P. Wilson) (Botanical name for the corn variety)

Organic/Biogenic
Jasper with Iron Staining (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper with Iron Staining

Silicon Dioxide (SiO2) with impurities

sedimentary
Granite (Intrusive Felsic Igneous Rock) — igneous

Granite

Intrusive Felsic Igneous Rock

igneous
Metallic sulfide mineral specimen, likely pyrite (Pyrite (FeS₂), possibly a pyrite-rich sulfide aggregate) — mineral

Metallic sulfide mineral specimen, likely pyrite

Pyrite (FeS₂), possibly a pyrite-rich sulfide aggregate

mineral
Native Copper (Native Copper (Cu)) — mineral

Native Copper

Native Copper (Cu)

mineral
Granite (Granite (interlocking crystals of quartz, feldspar, and mica)) — igneous

Granite

Granite (interlocking crystals of quartz, feldspar, and mica)

igneous
South Korean 100 Won Coin (Cupronickel) (Cupronickel Alloy (75% Cu, 25% Ni)) — mineral-based alloy (anthropogenic)

South Korean 100 Won Coin (Cupronickel)

Cupronickel Alloy (75% Cu, 25% Ni)

mineral-based alloy (anthropogenic)
Iron Meteorite (Iron-Nickel Alloy (Kamacite and Taenite)) — mineral

Iron Meteorite

Iron-Nickel Alloy (Kamacite and Taenite)

mineral
Transit Token (RTD Denver) (Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)) — not a rock or mineral (anthropogenic material)

Transit Token (RTD Denver)

Nickel-plated brass or bronze alloy (Cu-Sn-Zn-Ni)

not a rock or mineral (anthropogenic material)
Nickel coin (U.S. currency) (Cupronickel (75% Copper, 25% Nickel alloy)) — man-made alloy (metallic)

Nickel coin (U.S. currency)

Cupronickel (75% Copper, 25% Nickel alloy)

man-made alloy (metallic)
Aquamarine (Beryl (Be3Al2Si6O18 with iron impurities)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

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

Copper Nugget

Native Copper (Cu)

mineral
Shale (Fissile Mudstone (primarily composed of clay minerals and quartz)) — sedimentary

Shale

Fissile Mudstone (primarily composed of clay minerals and quartz)

sedimentary
Amber Inlay Jewelry (Fossilized Resin (C10H16O)) — Organic Gemstone (Biogenic)

Amber Inlay Jewelry

Fossilized Resin (C10H16O)

Organic Gemstone (Biogenic)
Shale with Plant Fossils / Carbonaceous Shale (Laminated Mudrock (Siliciclastic)) — sedimentary

Shale with Plant Fossils / Carbonaceous Shale

Laminated Mudrock (Siliciclastic)

sedimentary
Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

mineral
Chalcopyrite on Quartz (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite on Quartz

Copper Iron Sulfide (CuFeS2)

mineral
Aquamarine (Beryl (Be3Al2Si6O18)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18)

mineral
Dyed or coated quartz geode (Quartz geode; silicon dioxide (SiO₂), likely artificially color-enhanced) — mineral

Dyed or coated quartz geode

Quartz geode; silicon dioxide (SiO₂), likely artificially color-enhanced

mineral
Tiger's Eye (Silicified Crocidolite Pseudomorph (SiO2 with iron oxides)) — gemstone

Tiger's Eye

Silicified Crocidolite Pseudomorph (SiO2 with iron oxides)

gemstone
Bismuth (Bismuth (Bi)) — mineral

Bismuth

Bismuth (Bi)

mineral
Vanadinite (Vanadinite (Pb5(VO4)3Cl)) — mineral

Vanadinite

Vanadinite (Pb5(VO4)3Cl)

mineral
Gold (Aurum (Elemental Gold, Au)) — Mineral, Metal (element)

Gold

Aurum (Elemental Gold, Au)

Mineral, Metal (element)
Molybdenite in Quartz (Molybdenite (MoS2) with Quartz (SiO2)) — mineral

Molybdenite in Quartz

Molybdenite (MoS2) with Quartz (SiO2)

mineral
Bismuth (Native Bismuth (Bi)) — mineral

Bismuth

Native Bismuth (Bi)

mineral
Gold in Quartz Matrix (Native Gold (Au) with Quartz (SiO2)) — mineral

Gold in Quartz Matrix

Native Gold (Au) with Quartz (SiO2)

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

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

mineral
Silver (S925) (Native Silver (Ag)) — mineral

Silver (S925)

Native Silver (Ag)

mineral
Granite (White Granite variant) (Phaneritic Plutonic Rock (High-silica Felsic)) — igneous

Granite (White Granite variant)

Phaneritic Plutonic Rock (High-silica Felsic)

igneous
Granite (Phaneritic plutonic igneous rock (SiO2 range 65-75%)) — igneous

Granite

Phaneritic plutonic igneous rock (SiO2 range 65-75%)

igneous
Pink Granite (Phaneritic intrusive igneous rock with dominant Alkali Feldspar) — igneous

Pink Granite

Phaneritic intrusive igneous rock with dominant Alkali Feldspar

igneous
Native Copper (Native Copper (Cu)) — mineral

Native Copper

Native Copper (Cu)

mineral
Granite (Phaneritic Felsic Igneous Rock) — igneous

Granite

Phaneritic Felsic Igneous Rock

igneous
Black Jasper (Black Jasper (Silicate mineral - SiO2)) — sedimentary

Black Jasper

Black Jasper (Silicate mineral - SiO2)

sedimentary