Lepidolite with Rubellite Tourmaline
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 (Lepidolite mica)
mineral
Category
Mineral (Processed Metal)
Browse mineral (processed metal) specimens identified by the Rock Identifier community.
Serpentine (Serpentinite)
Antigorite, Lizardite, or Chrysotile (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4
metamorphic
Limonite (Ochreous)
FeO(OH)·nH2O (Hydrated Iron Oxide)
mineral
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Slate
Foliated Metamorphic Rock (primarily composed of Muscovite, Chlorite, and Quartz)
metamorphic
Granite
Phaneritic Felsic Igneous Rock
igneous
Titanium Aura Quartz (Bismuth-coated Druzy)
Silicon Dioxide (SiO2) with Titanium/Metal vapor coating
mineral
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Granodiorite
Granodiorite (Intermediate intrusive igneous rock)
igneous
Serpentinite
Serpentinite (composed primarily of mineral group (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4)
metamorphic
Gold Nugget
Native Gold (Au)
mineral
Silver (Jewelry Specimen)
Native Silver (Chemical Formula: Ag)
mineral
Sea Glass (Turquoise/Aqua)
Amorphous Silica (SiO2) with transition metal dopants
Anthropogenic (Man-made material processed by nature)
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Granite
Granite
igneous
Granite (with Beryl/Aquamarine)
Granite (Feldspar, Quartz, Mica, and Beryl Be3Al2Si6O18)
igneous
Serpentinite
Serpentinite (complex of lizardite, chrysotile, and antigorite: (Mg,Fe)3Si2O5(OH)4)
metamorphic
Sulfide Ore (likely Galena and Sphalerite in Quartz)
Lead-Zinc Ore (PbS and ZnS)
mineral
Gold Nugget
Native Gold (Au)
mineral
Quartz Vein in Host Rock
Silicon Dioxide (SiO2) within Metasedimentary or Igneous matrix
mineral
Pallasite Meteorite
Pallasite (Stony-iron meteorite; Fe-Ni alloy with (Mg,Fe)2SiO4 olivine)
Mineral/Extraterrestrial Rock
Diamond (Cluster Ring)
Carbon (C)
mineral
Copper Ore with Malachite and Chrysocolla
Cu2CO3(OH)2 (Malachite) with Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla)
mineral
Serpentinite
Serpentinite (complex of Antigorite, Lizardite, and Chrysotile, Mg3Si2O5(OH)4)
metamorphic
Celestite (Celestine)
Strontium sulfate (SrSO4)
mineral
Blue Goldstone
Goldstone (artificial glass)
Mineral (man-made glass, not natural)
Gold-Bearing Quartz
Silicon Dioxide with Native Gold (SiO2 + Au)
mineral
Silver (Native Element)
Ag (Argentum) - 90% Silver, 10% Copper alloy in specimen
mineral
Celestite (Celestine)
Strontium sulfate (SrSO4)
mineral
Ferromanganese Nodule
Polymetallic Nodule (composed primarily of MnO2 and Fe2O3)
sedimentary
Quartz Vein in Pelite (Metamorphic Rock)
Hydrothermal Quartz Veining in Metasedimentary Rock (SiO2)
metamorphic
Serpentinite
Serpentinite (composed primarily of Serpentine group minerals, (Mg,Fe,Ni,Al,Zn,Mn)2-3(Si,Al,Fe)2O5(OH)4)
metamorphic
Black Jasper (Black Onyx substitute)
Silicon Dioxide (SiO2) with carbonaceous impurities
sedimentary (microcrystalline quartz)
Limonite (Iron Stone/Iron Ore)
FeO(OH)·nH2O (Hydrous ferric oxide)
mineral
Serpentinite
Serpentinite (a rock composed predominantly of serpentine group minerals)
metamorphic
Beryl (likely var. Aquamarine or Goshenite) in Matrix
Beryllium Aluminum Silicate (Be3Al2Si6O18)
mineral
Slag (Industrial Byproduct)
Ferrous/Non-ferrous Silicate
igneous (artificial/anthropogenic)
Bauxite
Bauxite (Al(OH)3, AlO(OH))
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Yellow Ochre / Limonite
Limonite (FeO(OH)·nH2O)
Mineral