Basalt
Basalt (Mafic Extrusive Igneous Rock)
Category
Browse anthropic metallic specimen specimens identified by the Rock Identifier community.
Basalt
Basalt (Mafic Extrusive Igneous Rock)
Pyrite (Limonite Pseudo-morph after Pyrite)
Iron sulfide (FeS2) transitioning to Iron oxide-hydroxide (FeO(OH)·nH2O)
Black Tourmaline (Schorl)
Sodium Iron Aluminum Borosilicate (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)
Moqui Marble
Ironstone Concretion (Goethite/Hematite shell with Sandstone core)
Adventurine (Green)
Silicon Dioxide (SiO2) with inclusions of Fuchsite
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Green Aventurine (Quartz)
SiO2 (Silicon Dioxide with Fuchsite inclusions)
Bituminous Coal
Bituminous coal (Lithotype: Durain/Clarain)
Pyrite
Iron Sulfide (FeS2)
Pyrite
Iron Sulfide (FeS2)
Nuummite
Nuummite (mixture of Anthophyllite and Gedrite)
Pyrite (on Quartz matrix)
Iron Sulfide (FeS2)
Galena
Lead(II) sulfide (PbS)
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Pyrite
Iron Disulfide (FeS2)
Moqui Marble (Iron Concretion)
Hematite/Goethite Concretion (Fe2O3 / FeO(OH))
Basalt
Mafic volcanic rock (consisting mostly of plagioclase, pyroxene, and olivine)
Banded Iron Formation (BIF) with potential Stromatolite/Biogenic Trace
Ferruginous Chert / Banded Iron Formation (BIF)
Basalt
Mafic Volcanic Rock
Banded Iron Formation (BIF)
Banded Iron Formation
Moqui Marble (Shaman Stone)
Iron Oxide Concretion (Hematite/Goethite-encased Sandstone)
Banded Iron Formation / Jasper-Hematite Ore
Banded Iron Formation (BIF) containing Jasper (SiO2) and Hematite (Fe2O3)
Fluorite
Calcium Fluoride (CaF2)
Anthracite
Anthracite Coal
Pyrite (on host rock)
Iron Sulfide (FeS2)
Basalt
Basalt (containing plagioclase, pyroxene, and olivine)
Basalt
Basalt (Extrusive Igneous Rock)
Magnetite
Magnetite (Fe3O4)
Anthracite Coal
Anthracite (Carbon-rich metamorphic sedimentary rock)
Bituminous Coal
Organic Sedimentary Rock (Carbon-based)
Mica Schist
Mica Schist (KAl2(AlSi3O10)(OH)2 / K(Mg,Fe)3AlSi3O10(OH)2 mixed with SiO2)
Vesicular Basalt (or Scoria)
Vesicular Basalt (Aphanitic-vesicular volcanic rock)
Slag
Anthropogenic Iron Silicate Glass
Golden Mica Schist
Mica Schist (primarily Muscovite/Biotite with Quartz)
Basalt
Mafic volcanic rock, primarily composed of Plagioclase, Pyroxene, and Olivine
Pyrite
Iron Disulfide (FeS2)
Basalt
Mafic volcanic rock (Silicon dioxide 45-52%)
Basalt
Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)
Green Aventurine
Quartz (SiO2) with Fuchsite inclusions
Basalt
Basalt (Mafic Extrusive Igneous Rock)
Pyrulite (Pyrite / Chalcopyrite)
Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)