Milky Quartz
Silicon Dioxide (SiO2)
mineral
Category
Mineral (Refined Metal)
Browse mineral (refined metal) specimens identified by the Rock Identifier community.
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Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Mineral
Granite
Granite
igneous
Ironstone / Gossan with Quartz Inclusions
Limonite / Goethite rich Sandstone / Gossan
sedimentary
Bauxite
Bauxite (Al2O3·2H2O)
sedimentary
Quartz Vein in Host Rock (Gossanous Matrtix)
Silicon Dioxide (SiO2) with iron oxides (Limonite/Hematite)
mineral
Pyrite in Quartz
Iron Sulfide (FeS2) in Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Pallasite Meteorite (likely Imilac or Brenham)
Stony-Iron Meteorite (Pallasite)
mineral
Gold Nugget
Native Gold (Au)
mineral
Granite
Intrusive Igneous Rock
igneous
Manganese Nodule
Polymetallic Nodule (Hydrous manganese and iron oxides)
mineral
Cubic Zirconia (Diamond Simulant)
Zirconium Dioxide (ZrO2)
mineral
Lavender Quartz (appearing as beads) and Druzy Quartz
Silicon Dioxide (SiO2)
mineral
Emerald and Diamond (Jewelry Setting)
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities) and Carbon (C)
mineral
Quartz crystal pendant
Quartz (silicon dioxide, SiO₂), likely rock crystal or milky quartz
mineral
Graphite
Graphite (Carbon, C)
Mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Barite
Barium Sulfate (BaSO4)
mineral
Gold Ore
Native Gold (Au)
mineral
Native Copper (in coinage alloy)
Copper (Cu)
mineral
Quartz Vein in Host Rock (Likely Slate or Shale)
Hydrothermal Quartz (SiO2) in Pelitic host rock
metamorphic
Limonite with Quartz (Gossan)
Hydrated iron(III) oxide-hydroxide mixture (FeO(OH)·nH2O) with Silicon Dioxide (SiO2)
Mineral
Aura Quartz Geode (Angel Aura Quartz)
Silicon Dioxide (SiO2) bonded with precious metals
mineral
Aura Quartz (Pink/Magenta Aura Quartz)
Silicon Dioxide (SiO2) treated with vapor-deposited precious metals
mineral
Gossan (Iron Hat)
Iron oxide-rich weathered rock (primarily Limonite and Goethite with secondary Quartz)
mineral
Aura Quartz
Titanium or Gold bonded Silicon Dioxide (SiO2)
mineral
Quartz Vein in Siltstone
Silicon Dioxide (SiO2) within Sedimentary/Metamorphic Matrix
metamorphic
Metallic iron meteorite (probable)
Iron meteorite, typically kamacite–taenite (Fe–Ni alloy)
meteorite
Granite
Intrusive Igneous Rock
igneous
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Opalite
Synthetic glass (SiO2 + metal additions)
mineraloid
Gold
Native Gold (Au)
mineral
Aura Druzy Agate (Star Shape)
Silicon Dioxide (SiO2) with Titanium/Metal Vapor Coating
mineral
Gold
Native Gold (Au)
mineral
Limonite (Iron Stone/Gossen)
Limonite (FeO(OH)·nH2O)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Gold
Gold (Au)
mineral
Amber Inlay Jewelry
Fossilized Resin (C10H16O)
Organic Gemstone (Biogenic)