Gold Nugget
Native Gold (Au)
Category
Browse anthropic metallic specimen specimens identified by the Rock Identifier community.
Gold Nugget
Native Gold (Au)
Pyrite
Iron Disulfide (FeS2)
Gold Nugget
Native Gold (Au)
Fluorite
Calcium Fluoride (CaF2)
Arsenopyrite
Arsenopyrite (FeAsS)
Basalt
Basalt
Limonite (Yellow Ochre)
Limonite (Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O)
Basalt
Basalt (Mafic volcanic rock)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Aventurine
Silicon Dioxide (SiO2) with Fuchsite inclusions
Green Aventurine
Silicon dioxide with Fuscite inclusions (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
Specular Hematite (Specularite)
Hematite (Iron(III) oxide) - Fe2O3
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Ferruginous Quartz on Ironstone
Silicon Dioxide (SiO2) with Hematite (Fe2O3)
Gold Nugget
Native Gold (Au)
Silver (Native Element / Alloy)
Silver (Ag)
Basalt
Basalt (Mafic Extrusive)
Basalt
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
Basalt
Basalt (Mafic volcanic rock)
Moissanite
Silicon Carbide (SiC)
Peacock Ore
Bornite (Cu5FeS4) or Chalcopyrite (CuFeS2) with iridescent tarnish
Basalt
Basalt (composition predominately plagioclase feldspar and pyroxene)
Green Fluorite
Fluorite (Calcium Fluoride, CaF2)
Pyrite
Iron Sulfide (FeS2)
Lapis Lazuli
Lazurite-dominant rock, (Na,Ca)8(AlSiO4)6(SO4,S,Cl)2
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Red Hematite (Banded Iron Formation)
Hematite (Fe2O3)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions
Banded Iron Formation (Jaspilite)
Banded Iron Formation (BIF); predominantly Hematite (Fe2O3) and Magnetite (Fe3O4) with Chert/Jasper (SiO2)
Asphalt (Bituminous Pavement)
Bituminous mix (Aggregates with Bitumen binder)
Rutilated Quartz
Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions
Limonite (Iron Ore)
Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)
Gold (Processed)
Gold (Au)
Moissanite
Silicon Carbide (SiC)
Peacock Ore
Bornite (Cu5FeS4)
Bismuth
Bismuth (Bi)
Ironstone (likely Limonite or Goethite nodule)
Hydrothermally altered Ferric Hydroxide (FeO(OH)·nH2O)
Basalt
Extrusive mafic igneous rock
Gold Nugget
Native Gold (Au)
Basalt
Basalt
Basalt
Basalt (composition predominately Plagioclase feldspar and Pyroxene)
Vesicular Basalt
Extrusive Basalt (Mafic Silicate)