Mixed Tumbled Gemstones (Agate, Aventurine, Pyrite, etc.)
Multiple (principally Silicon Dioxide SiO2 and Iron Disulfide FeS2)
mineral
Category
Mineral (Processed Metal)
Browse mineral (processed metal) specimens identified by the Rock Identifier community.
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral with metamorphic or sedimentary host
Gold Ore in Quartz
Auriferous Quartz (Au + SiO2)
igneous
Ferruginous Sandstone (Gozzan)
Iron-rich clastic sedimentary rock with Limonite/Goethite
sedimentary
Slag (Industrial Glass Slag)
Amorphous Silicate Glass (often containing Al, Ca, Mg, and Ti oxides)
Mineraloid (Industrial byproduct)
Gold Nugget
Native Gold (Au)
mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Aura Quartz (Pink/Rose Aura Quartz)
Silicon Dioxide (SiO2) bonded with Platinum and/or Silver
mineral
Iron Slag
Anthropogenic Vitreous Silicate (Byproduct of Smelting)
Mineral-like byproduct
Ferrosilicon Slag (Industrial Vitrified Glass)
Vitreous Silicate Residue
Antropogenic (Man-made industrial byproduct)
Collection of Minerals and Ores
Various (e.g., Uraninite (U3O8), Carbon (C), Native Gold (Au), Hematite (Fe2O3), Galena (PbS), etc.)
mineral
Zinc Ore (Sphalerite in Matrix)
Sphalerite (Zn,Fe)S within a carbonate or silicate host rock
mineral
Native Copper
Native Copper (Cu)
mineral
Bauxite
Bauxite (mixture of Gibbiste Al(OH)3, Boehmite ̳-AlO(OH), and Diaspore ́-AlO(OH))
sedimentary
Quartz Vein in Sedimentary Matrix
Silicon Dioxide (SiO2) with host rock
mineral
Slag Glass (Cullet Glass)
Amorphous Silica (Industrial byproduct)
mineral
Dyed Aura Quartz
Silicon Dioxide (SiO2) with metallic coating
mineral
Quartz Vein in Host Rock (Gabbro or Basalt)
Silicon Dioxide (SiO2) with Mafic Silicates
metamorphic/igneous
Heat-Treated Amethyst (Commercial Citrine)
Silicon Dioxide (SiO2) - Macro-crystalline Quartz
mineral
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lithium-bearing Phyllosilicate)
mineral
Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pallasite Meteorite
Pallasite (ST-class)
mineral
Slag Glass
Vitreous Silicate Residue
industrial byproduct (anthropogenic rock)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Serpentinite
Serpentinite (composed primarily of Serpentine minerals: Mg3Si2O5(OH)4)
metamorphic
Gold
Native Gold (Au)
mineral
Not a geological specimen
N/A (man-made object)
N/A
Silver (Native Silver/Alloy Specimen)
Ag (Native Silver element), specifically a 90% Ag / 10% Cu alloy
mineral
Gossan (Iron Hat) with Quartz and Chlorite
Limonite/Goethite-rich Gossan (FeO(OH)·nH2O) with inclusions of Quartz and Chlorite
Mineral/Metamorphic Substrate
Cubic Zirconia (Diamond Simulant)
Zirconium Dioxide (ZrO2)
mineral
Dyed Pink Agate (Crackled)
Silicon Dioxide (SiO2) - Chalcedony variety
mineral
Standing Liberty Quarter (Silver Specimen)
Native Silver alloy (Ag with Cu traces)
mineral
Gold-bearing Quartz
Auriferous Quartz (SiO2 with Native Gold inclusion)
mineral
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals, Mg3Si2O5(OH)4)
metamorphic
Green Aura Quartz
Silicon Dioxide (SiO2) bonded with metallic vapors (typically Gold, Chromium, or Titanium)
mineral
Gold Nugget
Native Gold (Au)
mineral
Opalite
Man-made Synthetic Glass (Silicon Dioxide with metal additives)
mineral
Ferrous Slag
Fused calcium-iron silicates (Industrial Slag)
Anthropogenic/Industrial byproduct
Ferruginous Breccia
Breccia with Iron-rich (Hematite/Goethite) Matrix
sedimentary
Gold Ore in Matrix
Native Gold (Au) in Quartz/Host Rock
mineral
Iron Gossan (Limonite/Goethite)
Hydrated Iron Oxides (FeO(OH)·nH2O) from oxidation zones
sedimentary
Pyrite (on Quartz/Host Rock)
Iron Sulfide (FeS₂)
mineral