Opalite
Synthetic Glass (Hydrated Silica Simulant)
mineral
Category
Mineral (Refined Metal)
Browse mineral (refined metal) specimens identified by the Rock Identifier community.
Learn about Mineral (Refined Metal) in the encyclopedia
View all →
Aura Quartz Geodes (Lab-Altered)
Silicon Dioxide (SiO2) with Metallic Vapor Deposition
mineral
Possible iron-rich meteorite fragment
Undetermined; possible stony-iron or iron-oxide-rich meteorite
meteorite
Serpentinite
Serpentinite (Hydrated magnesium iron phyllosilicate)
metamorphic
Cubic Zirconia (as used in jewelry setting)
Zirconium dioxide (ZrO2)
mineral
Sandstone (Quartzose Sandstone / Feldspathic Sandstone)
SiO2 with minor impurities (Fe2O3, KAlSi3O8)
sedimentary
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
Not a geological specimen
N/A (man-made object)
N/A
Granite Pebble
Intrusive Igneous Rock (Quartz, Feldspar, Mica)
igneous
Gold-bearing quartz (probable sulfide-bearing quartz)
Quartz, SiO₂, with possible pyrite or mica inclusions
mineral
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Lepidolite
K(Li,Al)3(Al,Si,3O10)(F,OH)2
mineral
Rough Emerald Crystals
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
mineral
Green Aventurine
Silicon Dioxide (Quartz with Fuchsite inclusions), SiO2
metamorphic
Clear quartz crystal pendant
Quartz (silicon dioxide, SiO₂)
mineral
Polished banded agate (likely onyx agate) set in a ring
Microcrystalline quartz, SiO₂; chalcedony with visible banding
mineral
Green Aventurine
Silicon Dioxide with Fuchsite (SiO2)
mineral
Diamond Druzy (Crystalline Diamond)
Carbon (C)
mineral
Cubic Zirconia (CZ) in Gold-Plated Setting
Cubic Zirconium Dioxide (ZrO2)
mineral
Mixed gemstone bead bracelet
Likely rose quartz, amethyst, and possibly rhodonite or lepidolite beads
gemstone
Limonite (Iron Stone/Gossen)
Limonite (FeO(OH)·nH2O)
mineral
Polished jasper pendant
Jasper, an opaque microcrystalline variety of quartz (SiO₂); exact variety cannot be confirmed from the image
gemstone
Eudialyte
Eudialyte (Na4(Ca,Ce)2(Fe2+,Mn,Y)ZrSi8O22(OH,Cl)2)
mineral
Green aventurine bead bracelet
Quartz (SiO₂), typically green quartzite/aventurine colored by fuchsite mica or other inclusions
mineral
Ironstone / Gossan with Quartz Inclusions
Limonite / Goethite rich Sandstone / Gossan
sedimentary
Vesicular basalt (possibly industrial slag)
Basalt, chiefly plagioclase + pyroxene ± olivine; exact identification is uncertain from the image
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
Pyrite
Iron Disulfide (FeS2)
mineral
Blue Goldstone
Man-made glass with cobalt and metal flecks
man-made glass
Quartzite pebble
Quartzite (SiO2) with iron oxide staining
metamorphic
Gossan
Ferruginous gossan (Iron-rich capping)
sedimentary
Gold Nugget
Gold (Au)
mineral
Aura Quartz (specifically Titanium Aura Quartz)
Titanium-coated Silicon Dioxide (SiO2 + Ti Coating)
mineral
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Quartz Vein in Schist / Gneiss
Silicon Dioxide (SiO2) in Metamorphic Matrix
igneous
Weathered copper-bearing rock (likely malachite-stained basalt or greenstone)
Malachite, Cu₂CO₃(OH)₂, as a secondary coating on a mafic host rock; exact identification requires testing
igneous
Quartz Vein in Siltstone
Silicon Dioxide (SiO2) within Sedimentary/Metamorphic Matrix
metamorphic
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Barite
Barium Sulfate (BaSO4)
mineral
Gold Ore
Native Gold (Au)
mineral