Rock Identifier

Category

Anthropic Metallic Specimen

Browse anthropic metallic specimen specimens identified by the Rock Identifier community.

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Likely specular hematite (Hematite (Fe₂O₃), probably a micaceous/specular variety) — mineral

Likely specular hematite

Hematite (Fe₂O₃), probably a micaceous/specular variety

Weathered iron-rich rock fragment (Likely limonite/goethite-bearing rock, possibly altered pyrite or mica schist) — mineral

Weathered iron-rich rock fragment

Likely limonite/goethite-bearing rock, possibly altered pyrite or mica schist

Black Sand (Magnetite Sand) (Magnetite (Fe3O4)) — mineral

Black Sand (Magnetite Sand)

Magnetite (Fe3O4)

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Pyrite (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Labradorite ((Ca,Na)(Al,Si)4O8) — mineral

Labradorite

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

Silver (Native Element) (Ag (Argentum) - 90% Silver, 10% Copper alloy in specimen) — mineral

Silver (Native Element)

Ag (Argentum) - 90% Silver, 10% Copper alloy in specimen

Weathered iron-rich rock, likely magnetite-bearing basalt or ironstone (Basalt/ironstone mixture dominated by iron oxides, chiefly magnetite (Fe3O4) and hematite (Fe2O3)) — igneous

Weathered iron-rich rock, likely magnetite-bearing basalt or ironstone

Basalt/ironstone mixture dominated by iron oxides, chiefly magnetite (Fe3O4) and hematite (Fe2O3)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Silver (Native Element) (Ag (Native Silver), with minor Copper (Cu)) — mineral

Silver (Native Element)

Ag (Native Silver), with minor Copper (Cu)

Carborundum (Silicon Carbide) (Silicon carbide (SiC)) — mineral

Carborundum (Silicon Carbide)

Silicon carbide (SiC)

Anthracite Coal (Anthracite) — sedimentary

Anthracite Coal

Anthracite

Basalt (River-Worn Pebble) (Basalt) — igneous

Basalt (River-Worn Pebble)

Basalt

Biotite-bearing metamorphic rock, likely schist (Mica schist; chiefly quartz, feldspar, and biotite mica) — metamorphic

Biotite-bearing metamorphic rock, likely schist

Mica schist; chiefly quartz, feldspar, and biotite mica

Pyrite (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Pyrite-bearing quartz or sulfide-rich rock (Pyrite (FeS₂) in quartz-rich matrix, possibly with chalcopyrite) — mineral

Pyrite-bearing quartz or sulfide-rich rock

Pyrite (FeS₂) in quartz-rich matrix, possibly with chalcopyrite

Quartz-rich pegmatite, possibly with mica and iron staining (Quartz (SiO₂) with probable muscovite/biotite mica and minor iron oxides) — igneous

Quartz-rich pegmatite, possibly with mica and iron staining

Quartz (SiO₂) with probable muscovite/biotite mica and minor iron oxides

Quartzite (Milky Quartzite) (Quartzite (SiO2 silicon dioxide)) — metamorphic

Quartzite (Milky Quartzite)

Quartzite (SiO2 silicon dioxide)

Fluorite on Matrix (Calcium Fluoride (CaF2)) — mineral

Fluorite on Matrix

Calcium Fluoride (CaF2)

Green Aventurine (Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)) — metamorphic

Green Aventurine

Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)

Small metallic-looking rock fragment (Uncertain; possibly galena-bearing ore or mica-rich schist) — mineral

Small metallic-looking rock fragment

Uncertain; possibly galena-bearing ore or mica-rich schist

Galena (Galena (lead sulfide, PbS)) — mineral

Galena

Galena (lead sulfide, PbS)

Iron-rich metamorphic rock, likely hematite-bearing schist or ironstone (Hematite/goethite-rich quartz–mica schist or banded ironstone; Fe₂O₃ and FeO(OH) are probable major iron minerals) — metamorphic

Iron-rich metamorphic rock, likely hematite-bearing schist or ironstone

Hematite/goethite-rich quartz–mica schist or banded ironstone; Fe₂O₃ and FeO(OH) are probable major iron minerals

Green Aventurine (Quartz with Fuchsite inclusions (SiO2)) — mineral

Green Aventurine

Quartz with Fuchsite inclusions (SiO2)

Bornite (Bornite (Cu5FeS4)) — mineral

Bornite

Bornite (Cu5FeS4)

Super Seven (Melody Stone) (Quartz with inclusions (Amethyst, Cacoxenite, Goethite, Lepidocrosite, Rutile, Smoky Quartz, and Clear Quartz)) — mineral

Super Seven (Melody Stone)

Quartz with inclusions (Amethyst, Cacoxenite, Goethite, Lepidocrosite, Rutile, Smoky Quartz, and Clear Quartz)

Basalt (Mafic Igneous Rock (composed primarily of plagioclase, pyroxene, and olivine)) — igneous

Basalt

Mafic Igneous Rock (composed primarily of plagioclase, pyroxene, and olivine)

Galena-bearing rock (Galena (PbS), likely with quartz or host-rock minerals) — mineral

Galena-bearing rock

Galena (PbS), likely with quartz or host-rock minerals

Iron-rich meteorite candidate (Possibly an iron meteorite or stony-iron meteorite; exact identification requires testing) — meteorite

Iron-rich meteorite candidate

Possibly an iron meteorite or stony-iron meteorite; exact identification requires testing

Peacock Ore (Bornite (Cu5FeS4) with surface tarnish) — mineral

Peacock Ore

Bornite (Cu5FeS4) with surface tarnish

Schorl (Black Tourmaline) in Quartz/Feldspar Matrix (NaFe3Al6(BO3)3Si6O18(OH)4 (Schorl)) — igneous

Schorl (Black Tourmaline) in Quartz/Feldspar Matrix

NaFe3Al6(BO3)3Si6O18(OH)4 (Schorl)

Iron-rich rock, possibly hematite-rich ironstone (Likely hematite (Fe₂O₃) or a hematite-bearing ironstone; the photo is insufficient for a definitive identification) — mineral

Iron-rich rock, possibly hematite-rich ironstone

Likely hematite (Fe₂O₃) or a hematite-bearing ironstone; the photo is insufficient for a definitive identification

Weathered granite (Granite; quartz–feldspar–mica plutonic rock) — igneous

Weathered granite

Granite; quartz–feldspar–mica plutonic rock

Sunstone (Feldspar variety) ((Ca,Na)(Al,Si)4O8 with Hematite or Goethite inclusions) — mineral

Sunstone (Feldspar variety)

(Ca,Na)(Al,Si)4O8 with Hematite or Goethite inclusions

Likely galena-bearing ore (Galena (PbS), possibly mixed with quartz or carbonate gangue) — mineral

Likely galena-bearing ore

Galena (PbS), possibly mixed with quartz or carbonate gangue

Unidentified metallic mineral fragment (Indeterminate; possibly galena, hematite, or a metallic meteorite fragment) — mineral

Unidentified metallic mineral fragment

Indeterminate; possibly galena, hematite, or a metallic meteorite fragment

Pyrite-bearing rock (likely pyrite-rich quartz or schist) (Pyrite, FeS₂, intergrown with quartz and/or mica-rich matrix) — mineral

Pyrite-bearing rock (likely pyrite-rich quartz or schist)

Pyrite, FeS₂, intergrown with quartz and/or mica-rich matrix

Vesicular basalt (Basalt, typically composed of plagioclase feldspar, pyroxene, and minor olivine or iron oxides) — igneous

Vesicular basalt

Basalt, typically composed of plagioclase feldspar, pyroxene, and minor olivine or iron oxides

Gold-bearing quartz vein rock (Quartz (SiO₂) with probable native gold and iron-oxide/sulfide minerals) — mineral

Gold-bearing quartz vein rock

Quartz (SiO₂) with probable native gold and iron-oxide/sulfide minerals