Gold-bearing Quartz
Auriferous Quartz (SiO2 with Native Gold inclusion)
mineral
Category
Mineral, Metal (Element)
Browse mineral, metal (element) specimens identified by the Rock Identifier community.
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Aura Druzy Agate (Star Shape)
Silicon Dioxide (SiO2) with Titanium/Metal Vapor Coating
mineral
Anthracite coal
Anthracite; predominantly carbon (C), with minor macerals, ash, sulfur, and trace minerals
sedimentary
Diamond ring
Diamond (crystalline carbon, C)
gemstone
Pyrite (“fool’s gold”)
Pyrite, FeS₂; cubic iron sulfide
mineral
Tumbled metallic sulfide mineral, likely pyrite
Pyrite (FeS₂), tentatively; possibly marcasite or a pyrite-rich nodule
mineral
Aura Quartz (Titanium or Angel Aura coated)
Silicon Dioxide (SiO2) with metallic vapor coating
mineral
Gold
Native Gold (Au)
mineral
Blue Goldstone
Man-made glass with cobalt and metal flecks
man-made glass
Iron-rich meteorite candidate (possibly stony-iron meteorite)
Unclassified meteoritic material; apparent Fe-Ni metal with silicate matrix
meteorite
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Diamond engagement ring
Diamond, crystalline carbon (C)
gemstone
Slag Glass (Cullet Glass)
Amorphous Silica (Industrial byproduct)
mineral
Vesicular basalt pebble
Basalt; chiefly plagioclase, pyroxene, and olivine
igneous
Iron-oxide-stained sulfide-bearing rock, possibly pyrite-bearing schist
Likely quartz–mica schist or massive sulfide rock with pyrite (FeS₂) and limonite/goethite (FeO(OH)·nH₂O)
metamorphic
Vesicular basalt (likely weathered volcanic rock)
Basalt; primarily plagioclase feldspar, pyroxene, and commonly olivine
igneous
Iron-Stained Quartz/Quartzite
Silicon Dioxide (SiO2) with iron oxides (Limonite/Hematite)
metamorphic
Serpentinite
Serpentinite (composed primarily of Serpentine minerals: Mg3Si2O5(OH)4)
metamorphic
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Labradorite cabochon
Labradorite, a calcium-rich plagioclase feldspar; approximately (Ca,Na)(Al,Si)₄O₈
mineral
Gossan (Iron Hat)
Limonitic Gossan (Fe2O3·nH2O)
sedimentary
Gold Ore (in Quartz/Pyrite)
Native Gold (Au) with Quartz (SiO2) and Pyrite (FeS2)
mineral
Diamond ring
Diamond (crystalline carbon, C)
gemstone
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) in matrix
Mineral in Metamorphic/Igneous Host
Agate and millefiori glass jewelry
Agate: microcrystalline quartz (SiO₂); millefiori element appears to be man-made glass
mineral
Quartz Vein in Schist
Quartz (SiO2) in Pelitic Schist
metamorphic
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Polished turquoise cabochon pendant
Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O
mineral
Black tourmaline pendant
Schorl tourmaline, NaFe3Al6(BO3)3Si6O18(OH)4
mineral
Turquoise cabochon jewelry
Turquoise, hydrated copper aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O
gemstone
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Gossan (with Limonite/Hematite coating)
Ferruginous Gossan (Fe2O3·nH2O / Fe2O3)
sedimentary
Smoky quartz ring
Quartz (SiO₂), likely smoky quartz; the surrounding stones and metal cannot be identified reliably from the image.
gemstone
Diamond
Diamond (C)
mineral
Pyrite with Calcite
Iron Disulfide (FeS2) with Calcium Carbonate (CaCO3)
mineral
Red Granite
Intrusive Igneous Rock (Felsic)
igneous
Granite Pebble
Granite (composition of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Iron-rich meteorite candidate
Undetermined stony-iron or iron meteorite; possible weathered iron meteorite
meteorite
Turquoise-colored ring stone (possibly turquoise or imitation)
Turquoise, CuAl₆(PO₄)₄(OH)₈·4H₂O; identity cannot be confirmed from the image
gemstone
Basalt
Mafic volcanic rock, chiefly plagioclase feldspar, pyroxene, and commonly olivine or magnetite
igneous
Slag
Ferrous slag (by-product of iron smelting)
Mineraloid / Anthropogenic