Gneiss (with Quartz and Mica)
Gneiss
Category
Browse industrial byproduct (often confused with igneous rocks or meteorites) specimens identified by the Rock Identifier community.
Gneiss (with Quartz and Mica)
Gneiss
Yellow Quartz (Citrine/Lemon Quartz)
Silicon Dioxide (SiO2)
Banded Agate (specifically Carnelian Agate / Sardonyx)
Silicon Dioxide (SiO2) with iron oxide inclusions
Granite
Granite (High-silica plutonic rock)
Pink Granite
Phaneritic Felsic Intrusive Igneous Rock
Greenstone
Greenschist / Meta-basalt
Gneiss
Gneiss (High-grade metamorphic rock)
Yellow Chalcedony (Agate/Jasper mix)
Silicon Dioxide (SiO2)
Amethyst
Amethyst (a variety of Quartz, SiO2)
Eudialyte
Eudialyte (Na4(Ca,Ce)2(Fe2+,Mn,Y)ZrSi8O22(OH,Cl)2)
Geodude
Geodude (Rock Pokémon: No. 74)
Smoky Quartz in Matrix
Silicon dioxide (SiO2) within Pegmatite/Gneiss
Agate (Moss or Plume Agate variety)
Silicon Dioxide (SiO2)
Serpentine with Quartz Vein
Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4 with SiO2 veins
Serpentinite
Serpentinite (composed primarily of serpentine group minerals like lizardite, chrysotile, or antigorite; Mg3Si2O5(OH)4)
Aquamarine
Aquamarine (Beryl variety); Be3Al2Si6O18
Milky Quartz (Tumbled)
Quartz (Silicon Dioxide, SiO2)
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
Kyanite (within Quartz)
Kyanite (Al2SiO5) in crystalline Quartz base (SiO2)
Gneiss
Gneiss (Metamorphic high-grade)
Pyrite
Iron Disulfide (FeS2)
Quartz (likely Rose Quartz or Milky Quartz based on color)
Quartz (SiO2 - Silicon Dioxide)
Smoky Quartz
Silicon Dioxide (SiO2)
Citrine Quartz
Silicon Dioxide (SiO2) with ferric iron impurities
Milky Quartz
Silicon Dioxide (SiO2)
Amethyst
Amethyst (Silicon Dioxide, SiO2 with Iron impurities)
Peacock Ore
Bornite (Cu5FeS4)
Gneiss (Banded Gneiss)
Gneiss
Biotite (Black Mica)
Biotite - K(Mg,Fe)3(AlSi3O10)(OH)2
Biotite Gneiss
Gneiss (complex mixture including Biotite K(Mg,Fe)3AlSi3O10(F,OH)2 and Quartz/Feldspar)
Sodalite in Matrix (Sunset Sodalite)
Sodalite Na8(Al6Si6O24)Cl2
Vesicular Basalt
Extrusive Mafic Igneous Rock
Eudialyte in Matrix
Na15Ca6(Fe,Mn)3Zr3(Si,Nb) (Si25O73) (OH,Cl,H2O)3
Milky Quartz Vein with Matrix
Silicon Dioxide (SiO2)
Banded Carnelian Agate
Var. of Chalcedony (SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Basalt with Vesicle/Vug
Basalt (Aphanitic Mafic Igneous Rock)
Carnelian
Carnelian (Silicon Dioxide - SiO2 with iron oxide impurities)
Milky Quartz with inclusions
Quartz (Silicon Dioxide, SiO2)
Black Sand (Magnetite Sand)
Magnetite-rich Placers (Fe3O4)
Clear Quartz
Silicon Dioxide (SiO2)
Smoky Quartz (Rough Specimen)
Silicon Dioxide (SiO2)