Rock Identifier

Category

Mineral (Native Element Alloy)

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

Learn about Mineral (Native Element Alloy) in the encyclopedia

Sulfur

Copper

Gold

Platinum

Silver

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Brookite

Fluorite with Quartz (Fluorite (CaF2) and Quartz (SiO2)) — mineral

Fluorite with Quartz

Fluorite (CaF2) and Quartz (SiO2)

Muscovite (Muscovite (KAl2(AlSi3O10)(OH)2)) — mineral

Muscovite

Muscovite (KAl2(AlSi3O10)(OH)2)

Drill Core Samples (Varied Lithology) (Multi-lithological core samples (containing potential granite, marble, and phyllite/schist sequence)) — igneous, sedimentary, and metamorphic

Drill Core Samples (Varied Lithology)

Multi-lithological core samples (containing potential granite, marble, and phyllite/schist sequence)

igneous, sedimentary, and metamorphic

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Ruby (Raw Corundum) (Al2O3 (Aluminum Oxide)) — mineral

Ruby (Raw Corundum)

Al2O3 (Aluminum Oxide)

Pink Feldspar / Rhodochrosite (Tumbled Pink Quartzite) (SiO2 (Quartz) / KAlSi3O8 (Potassium Feldspar)) — mineral

Pink Feldspar / Rhodochrosite (Tumbled Pink Quartzite)

SiO2 (Quartz) / KAlSi3O8 (Potassium Feldspar)

Blue-green raw mineral specimen, likely apatite (Fluorapatite, Ca₅(PO₄)₃F (probable; visual identification only)) — mineral

Blue-green raw mineral specimen, likely apatite

Fluorapatite, Ca₅(PO₄)₃F (probable; visual identification only)

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Quartz in Limonite-rich Matrix (Silicon Dioxide (SiO2) with Goethite/Limonite FeO(OH)·nH2O) — Mineral in Sedimentary/Secondary host

Quartz in Limonite-rich Matrix

Silicon Dioxide (SiO2) with Goethite/Limonite FeO(OH)·nH2O

Mineral in Sedimentary/Secondary host

Granite (Granite (composed of Quartz, Feldspar, and Mica)) — igneous

Granite

Granite (composed of Quartz, Feldspar, and Mica)

Magnetite (Lodestone) (Iron(II,III) oxide (Fe3O4)) — mineral

Magnetite (Lodestone)

Iron(II,III) oxide (Fe3O4)

Granite (Granite) — Igneous

Granite

Granite

Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade metamorphic rock)

Malachite (Cu2CO3(OH)2 (Copper carbonate hydroxide)) — mineral

Malachite

Cu2CO3(OH)2 (Copper carbonate hydroxide)

Rhodochrosite (Manganese Carbonate (MnCO3)) — mineral

Rhodochrosite

Manganese Carbonate (MnCO3)

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Amygdaloidal Basalt (Amygdaloidal Basalt (containing quartz/agate or zeolite fill)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (containing quartz/agate or zeolite fill)

Shale (Shale (clastic sedimentary rock)) — Sedimentary

Shale

Shale (clastic sedimentary rock)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Yellow Ochre / Limonite (Hydrated ferric oxide (FeO(OH)·nH2O)) — mineral

Yellow Ochre / Limonite

Hydrated ferric oxide (FeO(OH)·nH2O)

Quartz Vein in Hematitic Siltstone (Hydrothermal Quartz (SiO2) in Ferriferous Matrix) — metamorphic

Quartz Vein in Hematitic Siltstone

Hydrothermal Quartz (SiO2) in Ferriferous Matrix

Schist (Mica Schist) — metamorphic

Schist

Mica Schist

Quartz-rich pegmatite fragment (Granite-family pegmatite; chiefly quartz (SiO₂), feldspar, and black mica (biotite)) — igneous

Quartz-rich pegmatite fragment

Granite-family pegmatite; chiefly quartz (SiO₂), feldspar, and black mica (biotite)

Garnet Schist (Almandine Garnet in Micaceous Schist) — metamorphic

Garnet Schist

Almandine Garnet in Micaceous Schist

Quartz with Tourmaline Inclusions (Silicon Dioxide with complex boro-silicate (SiO2 + Na(Fe3+Al6)(BO3)3Si6O18(OH)4)) — mineral

Quartz with Tourmaline Inclusions

Silicon Dioxide with complex boro-silicate (SiO2 + Na(Fe3+Al6)(BO3)3Si6O18(OH)4)

Greenschist (Chlorite Schist (Greenschist Facies)) — metamorphic

Greenschist

Chlorite Schist (Greenschist Facies)

Granitic Pegmatite with Schorl Tourmaline (Granitic Pegmatite (Schorl: NaFe3Al6(BO3)3Si6O18(OH)4)) — igneous

Granitic Pegmatite with Schorl Tourmaline

Granitic Pegmatite (Schorl: NaFe3Al6(BO3)3Si6O18(OH)4)

Copper Ore (Cupriferous Rock / Mixed Mineral Matrix) — igneous

Copper Ore

Cupriferous Rock / Mixed Mineral Matrix

Calcite (commonly referred to as Orange Calcite or Honey Calcite given its color) (Calcite) — Mineral

Calcite (commonly referred to as Orange Calcite or Honey Calcite given its color)

Calcite

Fluorite (Rainbow, Purple-Blue Tumbled) (Calcium Fluoride (CaF2)) — Mineral

Fluorite (Rainbow, Purple-Blue Tumbled)

Calcium Fluoride (CaF2)

Quartz (Clear Quartz/Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Quartz (Clear Quartz/Rock Crystal)

Silicon Dioxide (SiO2)

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

Quartz (River Pebble)

Silicon Dioxide (SiO2)

Amethyst (Silicon dioxide / Quartz (SiO2+Fe4+)) — mineral

Amethyst

Silicon dioxide / Quartz (SiO2+Fe4+)

Copper Ore / Altered Granodiorite (Cupriferous rock with silicate gangue) — mineral

Copper Ore / Altered Granodiorite

Cupriferous rock with silicate gangue

Pegmatite (Igneous Pegmatite) — igneous

Pegmatite

Igneous Pegmatite

Pegmatite (Igneous Pegmatite (Quartz, Feldspar, Micas)) — igneous

Pegmatite

Igneous Pegmatite (Quartz, Feldspar, Micas)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)