Black Tourmaline (Schorl)
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Category
Metal (Elemental Mineral)
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Native Gold in Quartz Host
Hydrothermal Gold (Au) in Quartz (SiO2)
mineral
Pyrite in Matrix
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Magnetite (Lodestone variant potential)
Magnetite (Fe3O4)
mineral
Galena
Lead(II) sulfide (PbS)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Chalcopyrite (Peacock Ore)
Copper Iron Sulfide (CuFeS2)
mineral
Pyrite-bearing Rock
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Tumbled Hematite
Iron(III) oxide (Fe2O3)
mineral
Galena
Lead(II) sulfide (PbS)
mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Iron Slag (Industrial Byproduct)
Anthropogenic pyrometallurgical residue
mineral
Specular Hematite
Hematite (Iron Oxide, Fe2O3)
mineral
Silver (Native Element)
Ag (Argentum)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Hematite
Hematite (Iron(III) oxide, Fe2O3)
mineral
Limonite / Ironstone Nodule
Limonite (Hydrated iron(III) oxide-hydroxide), FeO(OH)·nH2O
mineral
Tiger's Eye and Hematite
Quartz (SiO2) with Crocidolite inclusions and Hematite (Fe2O3)
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Copper Ore (likely Chalcopyrite in Matrix)
Chalcopyrite (CuFeS2)
mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Native Gold
Native Gold (Au)
mineral
Chalcopyrite
Chalcopyrite (CuFeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Arsenopyrite in Quartz/Host Rock
Arsenopyrite (FeAsS)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Galena
Lead(II) sulfide (PbS)
mineral
Moissanite
Silicon Carbide (SiC)
mineral
Magnetite (Lodestone variety)
Magnetite (Fe3O4)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Specular Hematite
Iron Oxide (Fe2O3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Schorl (Black Tourmaline) in Matrix
Sodium Iron Aluminum Borosilicate Hydroxide (NaFe2+3Al6Si6O18(BO3)3(OH)3OH)
mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Gold-bearing Quartz
Lode Gold in Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Gold
Native Gold (Au)
mineral
Tiger's Eye (and Hematite/Jasper Matrix)
SiO2 (Pseudomorph of Quartz after Crocidolite) with Hematite/Magnetite
mineral