Granite
Felsic intrusive igneous rock
igneous
Category
Mineral (Refined Metal)
Browse mineral (refined metal) specimens identified by the Rock Identifier community.
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Gold Flakes
Native Gold (Au)
mineral
Gold Flake
Native Gold (Au)
mineral
Copper Nugget
Native Copper (Cu)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Granite
Intrusive igneous rock composed mainly of quartz, alkali feldspar, and plagioclase
igneous
Milky Quartz Vein in Mafic Rock
Quartzite vein in Metabasalt (SiO2 base)
metamorphic
Iron Meteorite Fragment
Siderite (Geological term for iron meteorite class - Fe/Ni alloy)
igneous
Quartz Vein in Matrix
Silicon Dioxide (SiO2) within Rhyolitic or Granitic Matrix
igneous
Serpentinite
Serpentine rock (Mg,Fe,Ni,Al,Zn,Mn)3(Si,Al,Fe)2O5(OH)4
metamorphic
Epithermal Gold Ore (in Quartz/Rhyolite matrix)
Auriferous Quartz (Au + SiO2)
mineral
Zircon
Zircon (Zirconium Silicate, ZrSiO4)
mineral
Olivine (Peridot)
Magnesium Iron Silicate ((Mg, Fe)2SiO4)
mineral
Opalite crescent pendant
Opalite (man-made opalescent glass; not a natural mineral)
gemstone
Granite
Felsic intrusive igneous rock
igneous
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Sphalerite in Chalcedony (Crescent Carving)
Zinc Sulfide (ZnS) with Silicon Dioxide (SiO2)
mineral
Silver (Native or Alloyed)
Ag (Argentum)
mineral
Serpentinite
Serpentinite (Hydrated magnesium iron phyllosilicate)
metamorphic
Granite Boulder
Felsic Intrusive Igneous Rock
igneous
Ferrochrome Slag
Anthropogenic slag (Fe-Cr alloy waste)
industrial byproduct
Greenstone or Chlorite Schist
Greenschist / Chlorite schist
metamorphic
Granite
Felsic intrusive igneous rock
igneous
Pyrite
Iron Disulfide (FeS2)
mineral
Rhodochrosite (Beads) and Citrine (Pendant)
Rhodochrosite (MnCO3) and Quartz variety Citrine (SiO2)
mineral
Granite
Intrusive Igneous Rock
igneous
Granite / Pegmatite with Quartz Vein
Granite (composed mainly of Quartz SiO2, Potassium Feldspar KAlSi3O8, and Plagioclase)
igneous
Milky or Iron-Stained Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Diamond (set in jewelry)
Diamond (Carbon, C)
mineral
Diamond (in a gold ring)
Diamond (pure carbon, C)
mineral
Gold-bearing Quartz Vein in Mafic Rock
Hydrothermal Quartz Vein within Greenschist/Amphibolite facies (SiO2 with Au)
metamorphic
Granite
Granite (Intrusive Igneous Rock)
igneous
Aura Quartz / Rainbow Aura Quartz
Silicon Dioxide (SiO2) with metallic vapor coating
mineral
Celestite (Celestine)
Strontium Sulfate (SrSO4)
mineral
Celestite (Celestine)
Strontium Sulfate (SrSO4)
mineral
Not a geological specimen
N/A (man-made object)
N/A
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Olivine (Peridot Stone)
(Mg, Fe)2SiO4 (Magnesium Iron Silicate)
mineral