Bull Quartz (White Quartz)
Silicon Dioxide (SiO2)
mineral
Category
Mineral, Metal (Element)
Browse mineral, metal (element) specimens identified by the Rock Identifier community.
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Pyrite-bearing Rock
Iron Sulfide (FeS2) associated with host rock
mineral
Gold
Native Gold (Au)
mineral
Jewelry Chain with Blue and Clear Gemstones (Likely Cubic Zirconia)
Cubic Zirconia (ZrO₂), Silver or White Gold/Platinum Alloy
Mineral (synthetic) and Metal (precious/base)
Likely native metallic mineral specimen
Uncertain from photograph; possibly pyrite (FeS₂) or a sulfide-rich metallic ore
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Granite
Intrusive igneous rock (Felsic)
igneous
Copper Ore
Cupriferous Rock / Mixed Mineral Matrix
igneous
Quartz Veinated Sandstone or Siltstone
Silicon Dioxide (SiO2) within a clastic sedimentary matrix
sedimentary
Quartz / Calcite Vein Rock
Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3)
mineral
Native Copper
Native Copper (Cu)
mineral
Granite
Felsic intrusive igneous rock
igneous
Tree Agate
Chalcedony (SiO2) with Dendritic inclusions
mineral
Granite
Intrusive Igneous Rock
igneous
Granite
Intrusive igneous rock
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Lepidolite and Tiger's Eye
K(Li,Al)3(Si,Al)4O10(F,OH)2 (Lepidolite) / SiO2 (Quartz/Tiger's Eye)
mineral
Gold Nugget
Native Gold (Au)
mineral
Likely metallic mineral specimens
Probably native iron or iron oxide/hydroxide material; exact identification requires testing
mineral
Amethyst Cluster
Silicon Dioxide (Quartz variety: Amethyst) - SiO2
mineral
Iron-stained quartz-bearing rock
Quartz (SiO₂), likely in a limonite/goethite-rich matrix
mineral
Native Copper
Native Copper (Cu)
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Chalcopyrite on Quartz
Copper Iron Sulfide (CuFeS2)
mineral
Granite
Felsic intrusive igneous rock
igneous
Native Copper
Native Copper (Cu)
mineral
Native gold in quartz matrix
Native gold (Au), with quartz (SiO₂) and possibly sulfide minerals
mineral
Pyrite
Iron Disulfide (FeS2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Iron Slag
Iron/Steel Slag (Ferrosilicate Glass)
industrial byproduct (anthropogenic material)
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within Metasedimentary or Igneous Matrix
metamorphic
Granite Pebble
Phaneritic intrusive igneous rock
igneous
Cream Marble (Speckled)
Metamorphosed Limestone (mainly CaCO3)
metamorphic
Native copper nugget
Copper (Cu), often with cuprite or copper-oxide surface
mineral
Granite Pebble
Granite
igneous
Diamond bracelet (gold-set)
Diamond, crystalline carbon (C); gold alloy setting
gemstone
Red heart-shaped glass bead in a wire-wrapped jewelry charm
Likely colored glass (amorphous silica-based material); the image does not show an identifiable geological specimen
gemstone
Turquoise cabochon pendant
Turquoise, hydrated copper–aluminum phosphate: CuAl₆(PO₄)₄(OH)₈·4H₂O; likely stabilized or imitation turquoise
mineral
Possible weathered iron-rich rock or slag fragment
Indeterminate; likely limonite/goethite-bearing material, possibly iron slag
mineral
Rainbow Hematite / Magnetic Hematite
Iron oxide (Fe2O3) - often synthetic/coated for beads
mineral
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral