Quartz
Silicon Dioxide (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.
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Quartz
Silicon Dioxide (SiO2)
mineral
Granite with Epidote / Unakite precursor
Plutonic igneous rock composed of Quartz, Feldspar, and Epidote/Chlorite
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Greenstone
Metabasalt or Greenschist (often contains Chlorite, Actinolite, and Epidote)
metamorphic
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
mineral
Epidote (Greenstone)
Calcium aluminum iron silicate hydroxide Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH)
metamorphic
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Greenstone (Greenschist)
Greenschist facies rock (containing chlorite, actinolite, and epidote)
metamorphic
Gneiss (specifically Banded Gneiss)
Gneiss
metamorphic
Quartz (Smoky/Grey Variety)
Silicon Dioxide (SiO2)
mineral
Carnelian (a variety of Chalcedony)
Silicon Dioxide (SiO2) with Iron Oxide impurities
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Amethyst
SiO2 (Silicon Dioxide with Fe3+ impurities)
mineral
Magnetite / Iron Ore
Magnetite (Fe3O4)
mineral
Greenstone / Greenschist
Greenschist (containing Chlorite, Epidote, Actinolite)
metamorphic
Hematite
Iron(III) oxide (Fe2O3)
mineral
Bornite
Bornite (Cu5FeS4)
mineral
Unakite or Epidosite
Epidosite (Mineral composition: Epidote, Feldspar, and Quartz)
metamorphic
Labradorite
Feldspar (Plagioclase Series), (Ca,Na)(Al,Si)4O8
mineral
Quartzite (River Pebble)
Metamorphic Quartzite (SiO2)
metamorphic
Kaolin Clay in Saprolite Profile
Kaolinite (Al2Si2O5(OH)4) within Weathered Pegmatite/Granite
sedimentary
Native Copper (Penny specimen)
Native Copper (Cu)
mineral
Mica Schist
Mica Schist
metamorphic
Native Copper
Native Copper (Cu)
mineral
Rough Ruby (Corundum) in Zoisite Matrix
Al2O3 (Aluminum Oxide) with Ca2Al3(SiO4)3(OH)
mineral
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Fluorite
Calcium fluoride (CaF2)
mineral
Quartz
Quartz (SiO₂)
Mineral
K-Feldspar (Potassium Feldspar)
Potassium Feldspar (Microcline / Orthoclase, KAlSi3O8)
mineral
Sodalite
Na8Al6Si6O24(Cl,OH)2
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Red Sandstone
Arenite (with Iron Oxide / Hematite), Formula: SiO2 (Quartz) + Fe2O3 (Hematite coating)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral