Rock Identifier

Category

Mineral (Processed Alloy)

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

Psilomelane (Manganese Ore) (Psilomelane (Ba,H2O)2Mn5O10) — mineral

Psilomelane (Manganese Ore)

Psilomelane (Ba,H2O)2Mn5O10

Chalcopyrite (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Sandstone (Red Flagstone) (Clastic sedimentary rock (primarily Quartz - SiO2)) — sedimentary

Sandstone (Red Flagstone)

Clastic sedimentary rock (primarily Quartz - SiO2)

Likely raw chalcopyrite or bornite specimen (Chalcopyrite (CuFeS₂), possibly bornite (Cu₅FeS₄)) — mineral

Likely raw chalcopyrite or bornite specimen

Chalcopyrite (CuFeS₂), possibly bornite (Cu₅FeS₄)

Likely chalcopyrite-bearing sulfide ore (Chalcopyrite (CuFeS₂), possibly with pyrite and/or sphalerite) — mineral

Likely chalcopyrite-bearing sulfide ore

Chalcopyrite (CuFeS₂), possibly with pyrite and/or sphalerite

Iridescent bismuth crystal (Bismuth (Bi), artificially crystallized and likely oxidized/coated) — mineral

Iridescent bismuth crystal

Bismuth (Bi), artificially crystallized and likely oxidized/coated

Diorite (Salt and Pepper Rock) (Phaneritic Plutonic Diorite; chemical composition roughly 52-63% silica (SiO2)) — igneous

Diorite (Salt and Pepper Rock)

Phaneritic Plutonic Diorite; chemical composition roughly 52-63% silica (SiO2)

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

Galena (lead sulfide)

Galena, PbS

Bismuth Crystal (Bismuth (Bi)) — mineral

Bismuth Crystal

Bismuth (Bi)

Iron Meteorite (Candidate) (Iron Meteorite (Siderite)) — mineral

Iron Meteorite (Candidate)

Iron Meteorite (Siderite)

Gold Nugget (Gold (Au)) — mineral

Gold Nugget

Gold (Au)

Native Gold Flake (Gold (Au)) — mineral

Native Gold Flake

Gold (Au)

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

Iridescent bismuth crystal (Bismuth (Bi), commonly laboratory-grown and oxide-coated) — mineral

Iridescent bismuth crystal

Bismuth (Bi), commonly laboratory-grown and oxide-coated

Rhodochrosite (Manganese Carbonate (MnCO3)) — mineral

Rhodochrosite

Manganese Carbonate (MnCO3)

Aquamarine (Beryllium aluminum silicate (Be3Al2Si6O18)) — mineral

Aquamarine

Beryllium aluminum silicate (Be3Al2Si6O18)

Gold-bearing quartz or iron-stained quartzite (Quartz (SiO₂), possibly with native gold and iron oxides) — mineral

Gold-bearing quartz or iron-stained quartzite

Quartz (SiO₂), possibly with native gold and iron oxides

Celestite (Celestine) (Strontium sulfate (SrSO4)) — mineral

Celestite (Celestine)

Strontium sulfate (SrSO4)

Gold-bearing quartz vein in dark host rock (Native gold (Au) with quartz (SiO₂), likely in slate, schist, or altered volcanic rock) — mineral

Gold-bearing quartz vein in dark host rock

Native gold (Au) with quartz (SiO₂), likely in slate, schist, or altered volcanic rock

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

Galena

Galena (lead sulfide, PbS)

Copper-bearing sulfide ore, possibly bornite/chalcopyrite (Likely bornite (Cu5FeS4) and/or chalcopyrite (CuFeS2) in a sulfide-rich host rock) — mineral

Copper-bearing sulfide ore, possibly bornite/chalcopyrite

Likely bornite (Cu5FeS4) and/or chalcopyrite (CuFeS2) in a sulfide-rich host rock

Galena (likely argentiferous galena) (Galena, PbS; commonly cubic or massive lead sulfide, sometimes containing silver) — mineral

Galena (likely argentiferous galena)

Galena, PbS; commonly cubic or massive lead sulfide, sometimes containing silver

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

Bismuth crystal (Bismuth (Bi), commonly laboratory-grown hopper crystal) — mineral

Bismuth crystal

Bismuth (Bi), commonly laboratory-grown hopper crystal

Native gold (gold nugget) (Native gold, Au; commonly alloyed with silver and copper) — mineral

Native gold (gold nugget)

Native gold, Au; commonly alloyed with silver and copper

Gold Nuggests (Native Gold (Au)) — mineral

Gold Nuggests

Native Gold (Au)

Iron Meteorite (Meteorite (primarily Fe-Ni alloy with kamacite and taenite)) — meteorite

Iron Meteorite

Meteorite (primarily Fe-Ni alloy with kamacite and taenite)

Radiating stibnite crystals (Stibnite (antimony sulfide, Sb₂S₃)) — mineral

Radiating stibnite crystals

Stibnite (antimony sulfide, Sb₂S₃)

Galena (Galena (lead sulfide, PbS), possibly a galena-rich ore specimen) — mineral

Galena

Galena (lead sulfide, PbS), possibly a galena-rich ore specimen

Bismuth crystal aggregate (Bismuth (Bi), commonly laboratory-grown) — mineral

Bismuth crystal aggregate

Bismuth (Bi), commonly laboratory-grown

Tiffany Stone (Bertrandite (Be4Si2O7(OH)2) mixed with Fluorite (CaF2), Opal, and Chalcedony) — mineral

Tiffany Stone

Bertrandite (Be4Si2O7(OH)2) mixed with Fluorite (CaF2), Opal, and Chalcedony

Pink/red faceted gemstone, likely synthetic ruby or pink sapphire (Corundum, aluminum oxide (Al₂O₃); likely lab-grown or treated material) — gemstone

Pink/red faceted gemstone, likely synthetic ruby or pink sapphire

Corundum, aluminum oxide (Al₂O₃); likely lab-grown or treated material

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

Native Gold Nugget

Native Gold (Au)

Copper (native copper) (Native copper, Cu) — mineral

Copper (native copper)

Native copper, Cu

Likely galena (lead ore) (Galena, PbS (lead sulfide)) — mineral

Likely galena (lead ore)

Galena, PbS (lead sulfide)

Metallic iron meteorite (probable) (Iron meteorite, typically kamacite–taenite (Fe–Ni alloy)) — meteorite

Metallic iron meteorite (probable)

Iron meteorite, typically kamacite–taenite (Fe–Ni alloy)

Likely galena (lead glance) (Galena, PbS (lead sulfide)) — mineral

Likely galena (lead glance)

Galena, PbS (lead sulfide)

Copper-bearing rock, likely native copper in a weathered matrix (Native copper (Cu), tentatively with copper sulfide/oxide minerals) — mineral

Copper-bearing rock, likely native copper in a weathered matrix

Native copper (Cu), tentatively with copper sulfide/oxide minerals

Galena-bearing sulfide ore (Galena (lead sulfide, PbS), possibly with sphalerite and/or pyrite) — mineral

Galena-bearing sulfide ore

Galena (lead sulfide, PbS), possibly with sphalerite and/or pyrite

Iridium sand or Osmium-Iridium nugget (Iridosmine / Osmiridium (Platinoid grouping)) — mineral

Iridium sand or Osmium-Iridium nugget

Iridosmine / Osmiridium (Platinoid grouping)

Native copper-bearing rock (probable copper ore) (Native copper (Cu), likely with copper sulfide/oxide minerals in a host rock) — mineral

Native copper-bearing rock (probable copper ore)

Native copper (Cu), likely with copper sulfide/oxide minerals in a host rock

Likely raw galena fragment (Galena (lead sulfide, PbS), possibly with metallic sulfide matrix) — mineral

Likely raw galena fragment

Galena (lead sulfide, PbS), possibly with metallic sulfide matrix