Sodalite
Sodalite (Na4Al3Si3O12Cl)
Category
Browse industrial byproduct (often confused with igneous rocks or meteorites) specimens identified by the Rock Identifier community.
Sodalite
Sodalite (Na4Al3Si3O12Cl)
Metal Chain (Likely Steel or a Steel Alloy)
Steel (primarily iron and carbon); specific alloy unknown
Quartz Vein / Milky Quartz
Silicon Dioxide (SiO2)
Blue Apatite
Fluorapatite / Chlorapatite [Ca5(PO4)3(F,Cl,OH)]
Quartz
Silicon dioxide (SiO2)
Carnelian (Orange Agate/Chalcedony)
Silicon Dioxide (SiO2) - variety of Chalcedony
Orange Calcite point
Calcite (Calcium Carbonate, CaCO3)
Greasy Quartz (likely carved Milky Quartz or Aventurine)
Silicon Dioxide (SiO2)
Orthoclase Feldspar
Orthoclase (KAlSi3O8)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartz (Small Pebble)
Silicon Dioxide (SiO2)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Quartz (Smoky/Grey Quartz Variant)
Silicon Dioxide (SiO2)
Orange Quartzite (Tumble-polished)
Quartzite (primarily SiO2)
Basalt (Porphyritic Basalt)
Extrusive Igneous Rock
Porphyritic Basalt (Leopard Rock)
Porphyritic Mafic Volcanic Rock
Porphyritic Basalt
Extrusive igneous rock with plagioclase phenocrysts
Schist
Mica Schist (Group of medium-grade metamorphic rocks)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Carnelian Agate
Silicon Dioxide (SiO2) with iron oxide inclusions
Emerald
Beryl (Be3Al2(SiO3)6)
Pyrite
Iron Disulfide (FeS2)
Scoria (Vesicular Basalt)
Vesicular Basalt
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Greenstone (Epidosite or Altered Basalt)
Epidosite (Ca2(Al, Fe)3(SiO4)3(OH))
Banded Agate (Chert/Chalcedony)
Silicon Dioxide (SiO2)
Bornite
Copper Iron Sulfide (Cu5FeS4)
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
Muscovite Schist
Muscovite (KAl2(AlSi3O10)(OH)2) in Schist
Milky Quartz with Iron Inclusions
Quartz (Silicon Dioxide, SiO2)
Quartz (Tumbled Peach/Pink Quartz)
Silicon Dioxide (SiO2)
Fluorite
Fluoride (Calcium Fluoride - CaF2)
Chalcedony (Agate/Carnelian)
Cryptocrystalline Quartz (SiO2)
Pink Calcite (Mangano Calcite)
Calcium Carbonate (CaCO3)
Biotite Schist
Biotite-rich Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)
Quartzite Pebbles
Quartzite (SiO2)
River Cobble (likely Basalt or Chert)
Siliceous River Rock / Microcrystalline Quartz / Mafic Igneous
Quartz with Chlorite / Greenschist
Quartz vein in Greenschist (SiO2 with Chlorite group minerals)
Smoky Quartz
Silicon Dioxide (SiO2)
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
Gneiss
Gneiss (quartz-feldspar-biotite gneiss)
Quartzite Pebble
Quartzite (predominantly Silicon Dioxide - SiO2)