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
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Green Fluorite
Calcium Fluoride (CaF2)
mineral
Citrine
Silicon Dioxide (SiO2)
gemstone
Aquamarine (Beryl) Beads
Beryllium aluminum silicate (Be3Al2Si6O18)
gemstone
Actinolite
Ca2(Mg,Fe)5Si8O22(OH)2
mineral
Hematite (likely Botryoidal or Specularite variant)
Iron(III) oxide (Fe2O3)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Quartz (Grain)
Silicon Dioxide (SiO2)
mineral
Labradorite
Labradorite (Plagioclase Feldspar series; (Ca,Na)(Al,Si)4O8)
mineral
Nephrite Jade
Ca2(Mg, Fe)5Si8O22(OH)2 (Tremolite-Actinolite series)
metamorphic
Smoky Quartz
Silicon dioxide (SiO2)
Mineral
Bornite
Bornite (Cu5FeS4)
mineral
Jasper Agate (Chalcedony)
Silicon Dioxide (SiO2)
sedimentary
Quartz (Yellow/Citrine variety)
Crystalline Silicon Dioxide (SiO2)
mineral
Pyrite (locally known as Fool's Gold)
Iron Sulfide (FeS2)
mineral
Sodalite and Calcite
Na8(Al6Si6O24)Cl2 (Sodalite) and CaCO3 (Calcite)
mineral
Peach Moonstone
Orthoclase Feldspar (KAlSi3O8)
mineral
Magnetite or Hematite-rich Ore
Magnetite (Fe3O4) or Hematite (Fe2O3)
mineral
Epidote (with Quartz and Feldspar)
Epidote (unakalite/unite), Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Nephrite Jade
Tremolite-Actinolite solid solution Ca2(Mg,Fe)5Si8O22(OH)2
metamorphic
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
mineral
Nephrite Jade
Ca2(Mg,Fe)5Si8O22(OH)2 (Tremolite-Actinolite series)
metamorphic
Unidentifiable Rock Fragment
Uncertain
Quartzite
Quartzite (SiO2)
metamorphic
Botryoidal Pyrite
Iron Sulfide (FeS2)
mineral
Agate
Cryptocrystalline quartz, SiO2
mineral
Quartzite
Quartzite (chiefly SiO2)
metamorphic
Green Aventurine
Quartz (Aventurine variety) - SiO₂ with Fuchsite inclusions
Mineral
Quartzite
Quartzite (SiO2)
metamorphic
Smoky Quartz
Silicon dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Banded Gneiss
Gneiss (Metamorphic Rock)
metamorphic
Piddock-bored Mudstone
Lutite (Siltstone or Mudstone) with Pholad borings
sedimentary
Gneiss
Gneiss
metamorphic
Magnetite
Magnetite (Fe3O4)
mineral
Pyrite (Iron Pyrite)
Iron Sulfide (FeS2)
mineral
Basalt
Basalt (Mafic volcanic rock)
igneous
Greenschist
Chlorite schist
metamorphic