Rock Identifier

Category

Anthropic Metallic Specimen

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

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Peacock ore (bornite/chalcopyrite specimen) (Bornite, Cu₅FeS₄, commonly with chalcopyrite (CuFeS₂)) — mineral

Peacock ore (bornite/chalcopyrite specimen)

Bornite, Cu₅FeS₄, commonly with chalcopyrite (CuFeS₂)

Banded Iron Formation (BIF) / Ironstone (Magnetite-Hematite Quartzite / Ironstone) — sedimentary

Banded Iron Formation (BIF) / Ironstone

Magnetite-Hematite Quartzite / Ironstone

Limonite (Ironstone) Concretion (FeO(OH)·nH2O (Hydrous ferric oxide)) — sedimentary

Limonite (Ironstone) Concretion

FeO(OH)·nH2O (Hydrous ferric oxide)

Pyrite with Calcite (Iron Disulfide (FeS2) with Calcium Carbonate (CaCO3)) — mineral

Pyrite with Calcite

Iron Disulfide (FeS2) with Calcium Carbonate (CaCO3)

Quartzite River Cobble (Quartzite (SiO2)) — metamorphic

Quartzite River Cobble

Quartzite (SiO2)

Basalt (with possible fluidal texture) (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt (with possible fluidal texture)

Basalt (Aphanitic Mafic Igneous Rock)

Limonite Pseudomorph after Pyrite (Limonite (Hydrous iron oxides, FeO(OH)·nH2O) replacing Pyrite (FeS2)) — mineral

Limonite Pseudomorph after Pyrite

Limonite (Hydrous iron oxides, FeO(OH)·nH2O) replacing Pyrite (FeS2)

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

Sunstone

Feldspar (variety Oligoclase or Labradorite), (Ca,Na)(Al,Si)4O8

Chondrite Meteorite (L3 Chondrite (Unequilibrated Ordinary Chondrite)) — igneous

Chondrite Meteorite

L3 Chondrite (Unequilibrated Ordinary Chondrite)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Peacock Ore (Bornite or Chalcopyrite) (Bornite (Cu₅FeS₄) or iridescent Chalcopyrite (CuFeS₂)) — mineral

Peacock Ore (Bornite or Chalcopyrite)

Bornite (Cu₅FeS₄) or iridescent Chalcopyrite (CuFeS₂)

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

Sunstone

Oligoclase (Plagioclase Feldspar Group) - (Ca, Na)(Al, Si)4O8

Basalt Pebble (Extrusive mafic igneous rock; primarily (Ca, Na)(Mg, Fe, Al)Si2O6 and (Ca, Na)AlSi3O8) — igneous

Basalt Pebble

Extrusive mafic igneous rock; primarily (Ca, Na)(Mg, Fe, Al)Si2O6 and (Ca, Na)AlSi3O8

Muscovite Mica (with Quartz) (Muscovite (KAl2(AlSi3O10)(OH)2)) — mineral

Muscovite Mica (with Quartz)

Muscovite (KAl2(AlSi3O10)(OH)2)

Chalcopyrite-bearing Ore (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite-bearing Ore

Chalcopyrite (CuFeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Basalt (Vesicular) (Extrusive mafic igneous rock) — igneous

Basalt (Vesicular)

Extrusive mafic igneous rock

Banded Iron Formation (BIF) (Banded Iron Formation (predominantly Hematite and Chert)) — sedimentary

Banded Iron Formation (BIF)

Banded Iron Formation (predominantly Hematite and Chert)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Limonite (Pseudomorph after Pyrite/Marcasite) (Hydrated Iron Oxide (FeO(OH)·nH2O)) — mineral

Limonite (Pseudomorph after Pyrite/Marcasite)

Hydrated Iron Oxide (FeO(OH)·nH2O)

Diabase (also known as Dolerite) (Diabase) — igneous

Diabase (also known as Dolerite)

Diabase

Muscovite Mica (in Quartz matrix) (Potassium aluminum silicate hydroxide fluoride (KAl2(AlSi3O10)(F,OH)2)) — mineral

Muscovite Mica (in Quartz matrix)

Potassium aluminum silicate hydroxide fluoride (KAl2(AlSi3O10)(F,OH)2)

Weathered iron-rich sandstone or ironstone (Ferruginous sandstone, likely limonite/goethite-cemented quartz arenite) — sedimentary

Weathered iron-rich sandstone or ironstone

Ferruginous sandstone, likely limonite/goethite-cemented quartz arenite

Pyrite in Shale (Iron Sulfide (FeS2)) — mineral

Pyrite in Shale

Iron Sulfide (FeS2)

Gold in Quartz Matrix (Gold (Au) embedded in Quartz (SiO2)) — mineral

Gold in Quartz Matrix

Gold (Au) embedded in Quartz (SiO2)

Quartz-rich granite or granitic pegmatite (Granite; predominantly quartz (SiO₂), feldspar, and possibly mica) — igneous

Quartz-rich granite or granitic pegmatite

Granite; predominantly quartz (SiO₂), feldspar, and possibly mica

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Magnetite (Lodestone) (Magnetite (Fe3O4)) — mineral

Magnetite (Lodestone)

Magnetite (Fe3O4)

Gold Nugget (Native Gold (Au)) — mineral

Gold Nugget

Native Gold (Au)

Basalt with Vesicular Surface (Basalt (Mafic Extrusive)) — igneous

Basalt with Vesicular Surface

Basalt (Mafic Extrusive)

Basalt River Pebble (Extrusive Mafic Basalt) — igneous

Basalt River Pebble

Extrusive Mafic Basalt

Limonite after Pyrite (Pseudomorph) (FeO(OH)·nH2O following FeS2) — mineral

Limonite after Pyrite (Pseudomorph)

FeO(OH)·nH2O following FeS2

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Native gold nuggets (likely gold-bearing specimen) (Native gold, Au; possibly associated quartz or sulfide matrix) — mineral

Native gold nuggets (likely gold-bearing specimen)

Native gold, Au; possibly associated quartz or sulfide matrix

Pyrite in Matrix (Commonly called Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite in Matrix (Commonly called Fool's Gold)

Iron Sulfide (FeS2)

Dyed and Metallic Coated Agate Geode (Silicon Dioxide (SiO2) with titanium/gold vapor deposition coating) — sedimentary (primary) with artificial modification

Dyed and Metallic Coated Agate Geode

Silicon Dioxide (SiO2) with titanium/gold vapor deposition coating

sedimentary (primary) with artificial modification

Blue Goldstone (Aventurine Glass) — man-made glass

Blue Goldstone

Aventurine Glass

Labradorite (specifically Larvikite beads) (Plagioclase Feldspar (Na,Ca)(Si,Al)4O8) — igneous

Labradorite (specifically Larvikite beads)

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

Rainbow Hematite (Titanium Coated) (Iron(III) oxide (Fe2O3) with Titanium/Metal Oxide coating) — mineral

Rainbow Hematite (Titanium Coated)

Iron(III) oxide (Fe2O3) with Titanium/Metal Oxide coating

Quartzite river stone (Quartzite (SiO2 silicon dioxide)) — metamorphic

Quartzite river stone

Quartzite (SiO2 silicon dioxide)