Purple Lepidolite with Quartz
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Category
Mineral, Metal (Element)
Browse mineral, metal (element) specimens identified by the Rock Identifier community.
Sandstone
Arenite (primarily Quartz, SiO2)
sedimentary
Gold Nugget
Native Gold (Au)
mineral
Gold Nugget
Native Gold (Au)
mineral
Gold Nugget
Native Gold (Au)
mineral
Jasper
Jasper (Silica-rich Microcrystalline Quartz, SiO2)
sedimentary
Iron Slag
Anthropogenic Vitreous Silicate (Byproduct of Smelting)
Mineral-like byproduct
Gold Nugget
Native Gold (Au)
mineral
Gossan with Copper Carbonate (Chrysocolla/Malachite)
Ferruginous Oxide (Gossan) with Cu2CO3(OH)2 (Malachite) or (Cu,Al)2H2Si2O5(OH)4 (Chrysocolla)
Mineral/Sedimentary Interface
Rough Aquamarine
Beryl (Be₃Al₂Si₆O‑₁₈)
mineral
Lepidolite Polished Point
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
Mineral
Pyrite on Limestone
Iron Disulfide (FeS2) in Calcium Carbonate (CaCO3) matrix
sedimentary (matrix) / mineral (inclusion)
Opalite
Opalescent Glass (SiO2 + coloring agents)
Mineral (Synthetic/Man-made)
Bauxite
Bauxite (mixture of Gibbiste Al(OH)3, Boehmite ̳-AlO(OH), and Diaspore ́-AlO(OH))
sedimentary
Slag Glass (Cullet)
Amorphous Silicon Dioxide (SiO2) with metal oxide colorants
Anthropogenic (Man-made)
Dalmatian Stone
Dalmatian Jasper (Peralkaline Quartz-Feldspar Rock)
igneous
Ferruginous Sandstone (Gritstone)
Clastic sedimentary rock with iron-rich cement (FeO(OH)·nH2O)
sedimentary
White Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Tiger's Eye
Pseudomorph of Quartz after Crocidolite (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Slag
Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)
igneous (artificial/anthropogenic)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Slag
Anthropogenic Iron Silicate Glass
mineral
Gold
Native Gold (Au)
mineral
Opalite
Man-made Synthetic Glass (Silicon Dioxide with metal additives)
mineral
Fluorite (often called Rainbow Fluorite or Purple-Green Fluorite)
Calcium Fluoride (CaF2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Gossan (Iron Hat)
Limonitic Gossan (Fe-oxide/hydroxide complex)
igneous
Slag
Ferrous slag (by-product of iron smelting)
Mineraloid / Anthropogenic
Gold Nugget
Native Gold (Au)
mineral
Hypersthene
Hypersthene (Magnesium Iron Silicate - (Mg,Fe)SiO3)
mineral
Ferruginous Breccia
Breccia with Iron-rich (Hematite/Goethite) Matrix
sedimentary
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals, Mg3Si2O5(OH)4)
metamorphic
Pyrulite (Pyrite / Chalcopyrite)
Iron Sulfide (FeS2) or Copper Iron Sulfide (CuFeS2)
mineral
Olivine in Basalt matrix
Olivine (Magnesium Iron Silicate - (Mg, Fe)2SiO4)
igneous
Pyrite
Iron Sulfide (FeS2)
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg, Fe)2SiO4
mineral
Copper-bearing Quartz (with Malachite and Iron Oxides)
Quartz (SiO2) with Malachite (Cu2CO3(OH)2) and Hematite/Limonite (Fe2O3)
Mineral Specimen
Milky Quartz
Silicon Dioxide (SiO2)
mineral