Rock Identifier

Category

Anthropic Metallic Specimen

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

Coal (Bituminous) (Sedimentary carbonaceous rock) — sedimentary

Coal (Bituminous)

Sedimentary carbonaceous rock

Stony-Iron Meteorite (likely Mesosiderite or Ordinary Chondrite) (Meteorite (Silicate-Metal Matrix)) — meteorite

Stony-Iron Meteorite (likely Mesosiderite or Ordinary Chondrite)

Meteorite (Silicate-Metal Matrix)

Quartz with Mica (Silicon Dioxide (SiO2) with Mica group inclusions) — mineral

Quartz with Mica

Silicon Dioxide (SiO2) with Mica group inclusions

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Basalt Pebble (Mafic Igneous Rock) — igneous

Basalt Pebble

Mafic Igneous Rock

Basalt River Pebble (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt River Pebble

Basalt (Aphanitic Mafic Igneous Rock)

Basalt River Cobble (Basalt (Mafic Igneous Rock)) — igneous

Basalt River Cobble

Basalt (Mafic Igneous Rock)

Basalt (Arrowhead form) (Extrusive mafic igneous rock) — igneous

Basalt (Arrowhead form)

Extrusive mafic igneous rock

Basalt (Aphanitic Mafic Igneous Rock) — igneous

Basalt

Aphanitic Mafic Igneous Rock

Chalcopyrite in Quartz (Gossan/Iron Hat) (CuFeS2 (Chalcopyrite) with SiO2 (Quartz)) — mineral

Chalcopyrite in Quartz (Gossan/Iron Hat)

CuFeS2 (Chalcopyrite) with SiO2 (Quartz)

Basalt River Stone (Basalt) — igneous

Basalt River Stone

Basalt

Porphyritic Basalt (Basalt (Mafic volcanic rock)) — igneous

Porphyritic Basalt

Basalt (Mafic volcanic rock)

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

Sunstone (Feldspar)

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

Pyrite-bearing sulfide specimen (Pyrite (FeS₂), possibly mixed with chalcopyrite or other iron sulfides) — mineral

Pyrite-bearing sulfide specimen

Pyrite (FeS₂), possibly mixed with chalcopyrite or other iron sulfides

Basalt Pebble (Basalt) — igneous

Basalt Pebble

Basalt

Unidentified polished dark stone with a possible quartz fragment (Indeterminate; appearance may reflect polished basalt, obsidian, or iron-rich rock, with a pale quartz/feldspar inclusion) — mineral

Unidentified polished dark stone with a possible quartz fragment

Indeterminate; appearance may reflect polished basalt, obsidian, or iron-rich rock, with a pale quartz/feldspar inclusion

Sunstone (Feldspar variety) (Oligoclase or Andesine (Na,Ca)(Al,Si)4O8) — mineral

Sunstone (Feldspar variety)

Oligoclase or Andesine (Na,Ca)(Al,Si)4O8

Weathered iron-rich rock, possibly limonite/goethite-bearing breccia (Hydrated iron oxides/hydroxides, mainly limonite (mixture) and goethite, FeO(OH)·nH₂O) — mineral

Weathered iron-rich rock, possibly limonite/goethite-bearing breccia

Hydrated iron oxides/hydroxides, mainly limonite (mixture) and goethite, FeO(OH)·nH₂O

Likely bornite (“peacock ore”) with chalcopyrite (Bornite, Cu₅FeS₄, commonly intergrown with chalcopyrite, CuFeS₂) — mineral

Likely bornite (“peacock ore”) with chalcopyrite

Bornite, Cu₅FeS₄, commonly intergrown with chalcopyrite, CuFeS₂

Weathered iron-rich rock, possibly hematite-bearing breccia (Hematite (Fe₂O₃)-rich lithic fragment; exact host rock is uncertain from the image) — mineral

Weathered iron-rich rock, possibly hematite-bearing breccia

Hematite (Fe₂O₃)-rich lithic fragment; exact host rock is uncertain from the image

Silver-gray metallic ore, possibly galena-bearing rock (Likely galena (PbS) in a host rock, but identification is uncertain from the photograph) — mineral

Silver-gray metallic ore, possibly galena-bearing rock

Likely galena (PbS) in a host rock, but identification is uncertain from the photograph

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt with Vesicular Texture (Basalt (SiO2 range 45-52%)) — igneous

Basalt with Vesicular Texture

Basalt (SiO2 range 45-52%)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Tumbled metallic sulfide mineral specimen, likely pyrite-bearing ore (Likely pyrite (FeS₂) with associated sulfides and host rock; exact identification requires testing) — mineral

Tumbled metallic sulfide mineral specimen, likely pyrite-bearing ore

Likely pyrite (FeS₂) with associated sulfides and host rock; exact identification requires testing

Banded iron formation (ironstone) (BIF; hematite–magnetite–quartz/chert assemblage) — sedimentary

Banded iron formation (ironstone)

BIF; hematite–magnetite–quartz/chert assemblage

Limonite with Galena (FeO(OH)·nH2O (Limonite) and PbS (Galena)) — mineral

Limonite with Galena

FeO(OH)·nH2O (Limonite) and PbS (Galena)

Pyrite in Matrix (Iron Disulfide (FeS2)) — mineral

Pyrite in Matrix

Iron Disulfide (FeS2)

Tumbled yellow quartz (likely iron-stained quartz) (Quartz, silicon dioxide (SiO₂), with iron-oxide staining and possible minor inclusions) — mineral

Tumbled yellow quartz (likely iron-stained quartz)

Quartz, silicon dioxide (SiO₂), with iron-oxide staining and possible minor inclusions

Pyrite in Shale (Iron Sulfide (FeS2) in Argillaceous Shale) — sedimentary

Pyrite in Shale

Iron Sulfide (FeS2) in Argillaceous Shale

Iron-rich breccia (likely hematite–goethite breccia) (Hematite (Fe₂O₃) and goethite (FeO(OH)) in a silicified or iron-cemented breccia) — sedimentary

Iron-rich breccia (likely hematite–goethite breccia)

Hematite (Fe₂O₃) and goethite (FeO(OH)) in a silicified or iron-cemented breccia

Chalcopyrite ore (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite ore

Chalcopyrite (CuFeS2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Chondrite Meteorite (Ordinary Chondrite (L or H group classification)) — igneous

Chondrite Meteorite

Ordinary Chondrite (L or H group classification)

Likely galena-bearing rock (Galena, lead sulfide (PbS), in a dark host rock) — mineral

Likely galena-bearing rock

Galena, lead sulfide (PbS), in a dark host rock

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Limonite Concretion (FeO(OH)qnH2O (Hydrated iron(III) oxide-hydroxide mixture)) — sedimentary

Limonite Concretion

FeO(OH)qnH2O (Hydrated iron(III) oxide-hydroxide mixture)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Fools Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fools Gold)

Iron Disulfide (FeS2)

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

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)