Moonstone (specifically Rainbow Moonstone / White Labradorite)
White Labradorite (Feldspar Group: (Na,Ca)(Al,Si)4O8)
mineral
Category
Mineral Like Byproduct
Browse mineral like byproduct specimens identified by the Rock Identifier community.
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Quartz Vein in Host Rock
Silicon Dioxide (SiO2)
mineral with metamorphic or sedimentary host
Gneiss
Gneiss (High-grade Regional Metamorphic Rock)
metamorphic
Schist
Mica Schist (Quartz-Muscovite-Biotite Schist)
metamorphic
Quartz Pebble (likely Chalcedony or Quartzite)
Silicon Dioxide (SiO2)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Muscovite Mica (Golden/Yellow variety)
KAl2(AlSi3O10)(F,OH)2
mineral
Dalmation Stone (Dyed)
Peralkaline rhyolite
igneous
Turquoise
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Sandstone (with Concretion)
Arenite / Quartzose Sandstone
sedimentary
Citrine
SiO2 (Silicon Dioxide)
mineral
Jet
Lignite (Anthracite-grade compact coal)
sedimentary
Sandstone (Iron-stained)
Arenite (composed primarily of SiO2 with Fe2O3 staining)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2) with aluminum impurities and natural radiation
mineral
Granite Pebble
Granite (Phaneritic Quartz-Feldspar Rock)
igneous
Sandstone (Quartzose)
Sandstone (clastic sedimentary rock, primarily SiO2)
sedimentary
Gneiss
Gneiss
metamorphic
Mica Schist
Mica Schist (predominantly composed of Muscovite or Biotite silicates)
metamorphic
Garnet (Pyrope-Almandine series)
Garnet Group, (Mg,Fe)3Al2Si3O12
mineral
Lepidolite Polished Point
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
mineral
Limonite and Goethite
Limonite (hydrated iron(III) oxide-hydroxide) and Goethite (α-FeO(OH))
mineral
Chrysocolla in Cuprite (Sonoran Sunrise)
Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O) (Chrysocolla) and Cu2O (Cuprite)
mineral
Sandstone Pebble
Arenite (primarily SiO2)
sedimentary
Quartz Crystal with Inclusions
Silicon Dioxide (SiO2)
mineral
Lepidolite
K(Li,Al)3(Si,Al)4O10(F,OH)2
Mineral
Amygdaloidal Basalt with Quartz/Zeolite Infill
Amygdaloidal Basalt (extrusive volcanic rock with SiO2 or CaAl2Si3O10·3H2O infill)
igneous
Greenstone
Metabasalt / Chlorite-Epidote Schist
metamorphic
Gneiss
Metamorphic rock of high-grade regional metamorphism
metamorphic
Moss Agate
Silicon Dioxide with inclusions (SiO2 + Mn/Fe oxides)
mineral
Schist
Mica Schist (Group of medium-grade metamorphic rocks)
metamorphic
Beryl (Aquamarine) in Matrix
Beryllium aluminum silicate (Be3Al2(SiO3)6)
mineral
Sandstone (with garnet granules)
Clastic sedimentary rock (primarily SiO2 with Fe3Al2(SiO4)3 inclusions)
sedimentary
Arsenopyrite in Quartz/Host Rock
Arsenopyrite (FeAsS)
mineral
Granite
Granite (Felsic Plutonic Rock)
igneous
Blue Quartz (Aventurine)
Silicon Dioxide (SiO2) with inclusions of crocidolite or dumortierite
mineral
Honey Calcite
Calcium Carbonate (CaCO3)
mineral
Fluorite
Fluoride (Calcium Fluoride - CaF2)
mineral
Native Copper
Native Copper (Cu)
mineral
Cullet Glass (Industrial Slag Glass)
Amorphous Silica (SiO2) with metallic oxide impurities
Man-made byproduct (often mistaken for Obsidian or Emerald)
Kyanite (within Quartz)
Kyanite (Al2SiO5) in crystalline Quartz base (SiO2)
metamorphic