Arsenopyrite in Quartz Matrix
Arsenopyrite (FeAsS)
mineral
Category
Man Made Alloy (Metallic)
Browse man made alloy (metallic) specimens identified by the Rock Identifier community.
Sodalite in Matrix (often called Blue Marble or Sodalite-Syenite)
Sodalite-bearing Syenite / Na8Al6Si6O24Cl2 (Sodalite component)
igneous
Fluorite Octahedron
Fluorite (Calcium Fluoride, CaF2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Fluorite (Rainbow Fluorite Point)
Calcium Fluoride (CaF2)
mineral
Fluorite (Rainbow or Multi-colored Fluorite)
Fluorite (Calcium Fluoride - CaF2)
mineral
Fluorite
Fluorite (Calcium Fluoride - CaF2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Rutilated Quartz
Silicon Dioxide with Titanium Dioxide (SiO2 with TiO2 inclusions)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Fluorite (translucent octahedral crystal)
Calcium fluoride (CaF2)
mineral
Iron Gossan (Limonite/Goethite)
Hydrated Iron Oxides (FeO(OH)·nH2O) from oxidation zones
sedimentary
Clay (as a rock-forming material)
Clay minerals (e.g., Kaolinite group, Smectite group, Illite group, Chlorite group)
Mineral
Botryoidal Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite
Pyrite (FeS2)
Mineral
Galena
Lead(II) sulfide (PbS)
mineral
Gold Nugget
Native Gold (Au)
mineral
Galena
Lead(II) sulfide (PbS)
mineral
Chalcopyrite (Peacock Ore)
Chalcopyrite (CuFeS2)
mineral
Basalt
Extrusive mafic igneous rock
igneous
Native Copper Nugget
Native Copper (Cu)
mineral
Ironstone Concretion / Goethite-Hematite Nodule
Goethite/Hematite (α-FeO(OH) / Fe2O3)
sedimentary
Basalt
Basalt (primarily Plagioclase feldspar and Pyroxene)
igneous
Basalt (with Porphyritic/Vesicular texture)
Extrusive mafic igneous rock
igneous
Chalcopyrite
Chalcopyrite (CuFeS2)
mineral
Limonite (Ironstone)
Limonite (mixture of hydrated iron oxides, primarily Goethite α-FeO(OH))
mineral
Basalt
Extrusive Mafic Igneous Rock
igneous
Black Pearl (Tahitian Type)
Aragonite / Conchiolin composite (CaCO3)
mineraloid
Basalt
Extrusive mafic igneous rock
igneous
Anthracite Coal
Anthracite (Highly Metamorphosed Coal)
sedimentary
Schorl (Black Tourmaline) in Matrix
Sodium Iron Aluminum Borosilicate Hydroxide (NaFe2+3Al6Si6O18(BO3)3(OH)3OH)
mineral
Basalt River Stone
Basalt
igneous
Moqui Marble (Shaman Stone)
Iron Oxide Concretion (Goethite/Hematite shell with Sandstone core)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Basalt
Basalt (Aphanitic Mafic Volcanic)
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Native Copper within Host Rock
Native Copper (Cu)
Mineral
Graphite
Graphite (Native Carbon, C)
Mineral