Rock Identifier

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.

Greasy Quartz (likely carved Milky Quartz or Aventurine) (Silicon Dioxide (SiO2)) — mineral

Greasy Quartz (likely carved Milky Quartz or Aventurine)

Silicon Dioxide (SiO2)

Quartzite Pebble (Quartzite (predominantly Silicon Dioxide - SiO2)) — metamorphic

Quartzite Pebble

Quartzite (predominantly Silicon Dioxide - SiO2)

Carnelian Agate (Silicon Dioxide (SiO2) with iron oxide inclusions) — mineral

Carnelian Agate

Silicon Dioxide (SiO2) with iron oxide inclusions

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Sodalite (Sodalite (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Biotite Schist (Biotite-rich Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)) — metamorphic

Biotite Schist

Biotite-rich Schist (K(Mg,Fe)3AlSi3O10(OH,F)2)

Quartz / Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz / Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Quartz (SiO₂)) — Mineral

Quartz

Quartz (SiO₂)

Sodalite (Sodalite [Na8(Al6Si6O24)Cl2]) — mineral

Sodalite

Sodalite [Na8(Al6Si6O24)Cl2]

Tourmaline (Schorl or Dravite) on Matrix (Complex Borosilicate - Na(Mg,Fe,Li,Al,Mn)3Al6(BO3)3Si6O18(OH,F)4) — mineral

Tourmaline (Schorl or Dravite) on Matrix

Complex Borosilicate - Na(Mg,Fe,Li,Al,Mn)3Al6(BO3)3Si6O18(OH,F)4

Schist (Mica Schist (Group of medium-grade metamorphic rocks)) — metamorphic

Schist

Mica Schist (Group of medium-grade metamorphic rocks)

Orange Calcite (Calcite (CaCO3)) — Mineral

Orange Calcite

Calcite (CaCO3)

Leopard Skin Jasper (Chalcedony (cryptocrystalline Quartz)) — Mineral

Leopard Skin Jasper

Chalcedony (cryptocrystalline Quartz)

Moss Agate (Silicon Dioxide with inclusions (SiO2 + Mn/Fe oxides)) — mineral

Moss Agate

Silicon Dioxide with inclusions (SiO2 + Mn/Fe oxides)

Red Jasper (Quartz) (Silicon Dioxide (SiO2) with Iron impurities) — sedimentary

Red Jasper (Quartz)

Silicon Dioxide (SiO2) with Iron impurities

Amethyst (Silicon Dioxide (SiO2) with iron impurities) — mineral

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Fluorite (Fluoride (Calcium Fluoride - CaF2)) — mineral

Fluorite

Fluoride (Calcium Fluoride - CaF2)

Sodalite (Sodalite (Na8(Al6Si6O24)Cl2)) — mineral

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Greenstone (Epidosite or Altered Basalt) (Epidosite (Ca2(Al, Fe)3(SiO4)3(OH))) — metamorphic

Greenstone (Epidosite or Altered Basalt)

Epidosite (Ca2(Al, Fe)3(SiO4)3(OH))

Quartzite (River Pebble) (Metamorphosed Quartz Sandstone (SiO2)) — metamorphic

Quartzite (River Pebble)

Metamorphosed Quartz Sandstone (SiO2)

Chert (Cherty Limestone / Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Cherty Limestone / Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Ferruginous Quartz (SiO2 (Silicon Dioxide) with Iron Oxide inclusions (FeO(OH) / Fe2O3)) — mineral

Ferruginous Quartz

SiO2 (Silicon Dioxide) with Iron Oxide inclusions (FeO(OH) / Fe2O3)

Amazonite (Microcline (KAlSi3O8)) — mineral

Amazonite

Microcline (KAlSi3O8)

Blue Chalcedony (Microcrystalline Quartz (SiO2)) — mineral

Blue Chalcedony

Microcrystalline Quartz (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Porphyritic Basalt (Leopard Rock) (Porphyritic Mafic Volcanic Rock) — igneous

Porphyritic Basalt (Leopard Rock)

Porphyritic Mafic Volcanic Rock

Greenstone (possibly Basalt or Greenschist) (Greenschist (composed primarily of chlorite, actinolite, and epidote)) — Metamorphic (low-grade)

Greenstone (possibly Basalt or Greenschist)

Greenschist (composed primarily of chlorite, actinolite, and epidote)

Metamorphic (low-grade)

Greenstone (Metabasalt / Chlorite-Epidote Schist) — metamorphic

Greenstone

Metabasalt / Chlorite-Epidote Schist

Quartz (Rock Crystal) (Quartz (SiO₂ - Silicon Dioxide)) — Mineral

Quartz (Rock Crystal)

Quartz (SiO₂ - Silicon Dioxide)

Gneiss (Metamorphic Rock) (Gneiss) — metamorphic

Gneiss (Metamorphic Rock)

Gneiss

White Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

White Quartz Pebble

Silicon Dioxide (SiO2)

Pyrite in Matrix (Commonly called Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite in Matrix (Commonly called Fool's Gold)

Iron Sulfide (FeS2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Quartz (Silicon Dioxide (SiO2)) — Mineral

Quartz

Silicon Dioxide (SiO2)

Scoria (Vesicular Basalt) (Vesicular Basalt) — igneous

Scoria (Vesicular Basalt)

Vesicular Basalt

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Basalt with Epidote (Flowerstone-like texture) (Amygdaloidal Basalt (silicate mineral inclusions)) — igneous

Basalt with Epidote (Flowerstone-like texture)

Amygdaloidal Basalt (silicate mineral inclusions)

Schist (Schist (various mineral compositions)) — metamorphic

Schist

Schist (various mineral compositions)

Blue Chalcedony (Silicon Dioxide (SiO2)) — mineral

Blue Chalcedony

Silicon Dioxide (SiO2)

Clear Quartz (beads in a bracelet) (Quartz (SiO2)) — Mineral

Clear Quartz (beads in a bracelet)

Quartz (SiO2)