Quartz (milky quartz variety)
Quartz (SiO₂)
Mineral
Category
Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites)
Browse industrial byproduct (often confused with igneous rocks or meteorites) specimens identified by the Rock Identifier community.
Learn about Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites) in the encyclopedia
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Chalcopyrite (Peacock Ore)
Chalcopyrite (CuFeS2)
mineral
Schist
Crystalline Metamorphic Rock (Schistose)
metamorphic
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Jasper (Red Jasper)
Silicon Dioxide (SiO₂)
sedimentary
Quartz
Quartz (SiO2 - Silicon Dioxide)
Mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(F,OH)2)
mineral
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Banded Agate (Pink Chalcedony)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Sandstone (Quartz-rich Cobble)
Arenite
sedimentary
Bauxite
AlOx(OH)3-2x (mixture of Gibbsite, Boehmite, and Diaspore)
sedimentary
Red Sandstone
Arenite (with Iron Oxide)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Biotite Schist
Biotite-rich Schist
metamorphic
Pink Garnet in Matrix
Grossular or Almandine Garnet (X3Y2(SiO4)3)
metamorphic
Schorl (Black Tourmaline)
Sodium Iron Aluminum Borosilicate (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Magnetite / Ironstone
Magnetite (Fe3O4)
mineral
Pumice
Vesicular Rhyolite or Dacite
igneous
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
mineral
Smoky Quartz and Biotite Schist
Quartz-Biotite Schist (SiO2 + K(Mg,Fe)3AlSi3O10(F,OH)2)
metamorphic
Porphyritic Basalt
Basalt (Mafic Extrusive Igneous Rock)
igneous
Milky Quartz Pebble
Quartz (Silicon Dioxide - SiO2)
mineral
Tumbled purple fluorite (probable)
Fluorite, calcium fluoride (CaF₂)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Quartzite Pebble
Quartzite (SiO2 with minor impurities)
metamorphic
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Potassium Feldspar
K-Feldspar (Orthoclase/Microcline) KAlSi3O8
mineral
Black Tourmaline
Schorl (Sodium iron aluminum borosilicate), NaFe3Al6(BO3)3Si6O18(OH)4
mineral
Chalcedony (Agate/Carnelian)
Cryptocrystalline Quartz (SiO2)
mineral
Limonite (Iron Ore)
FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide)
mineral
Tumbled brown stone, likely smoky quartz or brown jasper
Probable smoky quartz (SiO₂) or iron-rich jasper (microcrystalline SiO₂); image alone is insufficient for certainty
mineral
Vesicular Basalt
Extrusive Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)
igneous
Quartzite
Quartzite (primarily SiO2)
metamorphic
Emerald (Rough)
Beryl (Be3Al2Si6O18 with Chromium/Vanadium impurities)
gemstone
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Raw Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Hematite
Hematite (Fe2O3)
mineral