Anthropic Metallic Specimen

Galena in Quartz Matrix

Lead Sulfide (PbS) in Silicon Dioxide (SiO2)

Silver (Native Silver/Alloy Specimen)

Ag (Native Silver element), specifically a 90% Ag / 10% Cu alloy

Hematite

Iron (III) Oxide, Fe2O3

Iron Meteorite (Campo del Cielo)

Iron Meteorite, Group IAB (FeNi Alloy: Kamacite and Taenite)

Gold in Matrix

Native Gold (Au)

Hypersthene

Enstatite (Hypersthene variety), (Mg,Fe)SiO3

Native Copper in Basalt

Cu-element in Mafic Volcanic Rock (Basalt)

Labradorite

(Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)

Labradorite

(Ca, Na)(Al, Si)4O8 (Plagioclase Feldspar)

Labradorite

(Ca, Na)(Al, Si)4O8

Gold Nugget

Native Gold (Au)

Tiger Iron / Banded Iron Formation

Banded Iron Formation (SiO2 with Fe2O3 and FeOOH)

Gold Ore (in Quartz/Pyrite)

Native Gold (Au) with Quartz (SiO2) and Pyrite (FeS2)

Pyrite in Matrix

Iron Sulfide (FeS2)

Gold-bearing Quartz Ore

Auriferous Quartz (SiO2 with Au)

Specular Hematite

Specularite (Iron Oxide, Fe2O3)

Specular Hematite and Magnetite Ore

Iron Oxide (Fe2O3 and Fe3O4)

Auriferous Quartz with Pyrite

Gold-bearing Quartz (SiO2 + FeS2 + Au)

Nuummite

Orthoamphibole (mixture of Anthophyllite and Gedrite)

Native Copper

Native Copper (Cu)

Gold-bearing Quartz (Auriferous Quartz)

Quartz (SiO2) with native Gold (Au) inclusions

Gold Ore in Quartz

Native Gold (Au) in Quartz (SiO2) matrix

Epithermal Gold Ore (in Quartz/Rhyolite matrix)

Auriferous Quartz (Au + SiO2)

Diamond

Carbon (C)

Specular Hematite (Specularite)

Iron Oxide (Fe2O3)

Hypersthene

Enstatite (Hypersthene variety), (Mg,Fe)SiO3

Gold Grain

Native Gold (Au)

Gold Ore

Native Gold (Au) in Matrix

Silver (Morgan Dollar)

Native Silver (Ag) - 90% Silver, 10% Copper alloy

Iron Meteorite

Siderite (Iron-Nickel Alloy), predominantly Kamacite and Taenite (Fe, Ni)

Gold in Quartz

Hydrothermal Quartz with Native Gold (SiO2 with Au)

Labradorite

Labradorite ((Ca, Na)(Al, Si)4O8)

Tiger's Eye (often misinterpreted as Gold Ore in this context)

Pseudomorph of Quartz after Crocidolite (SiO2)

Pyrite

Iron Sulfide (FeS2)

Specular Hematite (Specularite)

Iron Oxide (Fe2O3)

Sunstone

Andesine-Labradorite Feldspar ((Ca,Na)(Al,Si)4O8)

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Goldstone

Aventurine Glass (Man-made glass with copper inclusions)

Pyrite (Iron Pyrite)

Iron Sulfide (FeS2)

Gold Ore in Quartz

Native Gold (Au) in Quartz (SiO2)

Banded Iron Formation (BIF)

Banded Iron Formation (SiO2 + Fe2O3)

Bog Iron (Limonite Concretion)

Limonite (FeO(OH)·nH2O)