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.

Learn about Industrial Byproduct (Often Confused With Igneous Rocks Or Meteorites) in the encyclopedia

Pegmatite

Pyroxenite

Tactite

Feldspathic Sandstone

Feldspathic Sandstone

Cordierite Hornfels

Cordierite Hornfels

Quartz (Double-Terminated) (Silicon Dioxide (SiO2)) — mineral

Quartz (Double-Terminated)

Silicon Dioxide (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

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

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Mica-rich Sandstone or Micaceous Schist Weathering (Micaceous Schist (Muscovite-Quartz composition)) — Metamorphic or Sedimentary depending on local grade

Mica-rich Sandstone or Micaceous Schist Weathering

Micaceous Schist (Muscovite-Quartz composition)

Metamorphic or Sedimentary depending on local grade

Arfvedsonite in Quartz (Arfvedsonite [Na3(Fe2+4Fe3+)Si8O22(OH)2] often hosted in Quartz or Feldspar) — igneous

Arfvedsonite in Quartz

Arfvedsonite [Na3(Fe2+4Fe3+)Si8O22(OH)2] often hosted in Quartz or Feldspar

Garnet (Almandine (Fe3Al2(SiO4)3)) — mineral

Garnet

Almandine (Fe3Al2(SiO4)3)

Quartz and Limestone Grouping (Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3)) — mineral

Quartz and Limestone Grouping

Silicon Dioxide (SiO2) / Calcium Carbonate (CaCO3)

Smoky Quartz (Smoky Quartz (Silicon Dioxide, SiO2)) — mineral

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

Granite (Granite (a felsic intrusive igneous rock)) — Igneous

Granite

Granite (a felsic intrusive igneous rock)

Blue Dumortierite Quartz (AlAl6BSi3O18 (Dumortierite) within SiO2 (Quartz)) — mineral

Blue Dumortierite Quartz

AlAl6BSi3O18 (Dumortierite) within SiO2 (Quartz)

Blue Topaz (Al2SiO4(F,OH)2 (Fluorine-bearing aluminum silicate)) — mineral

Blue Topaz

Al2SiO4(F,OH)2 (Fluorine-bearing aluminum silicate)

Agate (Chalcedony (Silicon Dioxide, SiO2)) — mineral

Agate

Chalcedony (Silicon Dioxide, SiO2)

Black Tourmaline (Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)) — mineral

Black Tourmaline

Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)

Beryl (Emerald variety in host rock) (Be3Al2(SiO3)6 (Silicate mineral)) — mineral

Beryl (Emerald variety in host rock)

Be3Al2(SiO3)6 (Silicate mineral)

Basalt (with Iron Staining) (Mafic Igneous Rock) — igneous

Basalt (with Iron Staining)

Mafic Igneous Rock

Chalcedony (Agate Pebble) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate Pebble)

Silicon Dioxide (SiO2)

Sardonyx or Carnelian Agate (Silicon Dioxide (SiO2) with iron impurities) — mineral

Sardonyx or Carnelian Agate

Silicon Dioxide (SiO2) with iron impurities

Lapis Lazuli (Lapis Lazuli (Complex silicate mineral mix including Lazurite, Pyrite, and Calcite)) — metamorphic

Lapis Lazuli

Lapis Lazuli (Complex silicate mineral mix including Lazurite, Pyrite, and Calcite)

Tumbled and polished quartz crystal points (Quartz (silicon dioxide, SiO₂), chiefly rock crystal with smoky or included varieties) — mineral

Tumbled and polished quartz crystal points

Quartz (silicon dioxide, SiO₂), chiefly rock crystal with smoky or included varieties

Chert (specifically Gray/Blue-Gray Chert) (Chert (SiO2)) — sedimentary

Chert (specifically Gray/Blue-Gray Chert)

Chert (SiO2)

Basalt (Basalt (extrusive volcanic rock)) — igneous

Basalt

Basalt (extrusive volcanic rock)

Chalcedony (Agate) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (Agate)

Silicon Dioxide (SiO2)

Green Fluorite (Calcium Fluoride (CaF2)) — mineral

Green Fluorite

Calcium Fluoride (CaF2)

Druzy Quartz on Matrix (Silicon Dioxide (SiO2)) — mineral

Druzy Quartz on Matrix

Silicon Dioxide (SiO2)

Geodal Limestone / Calcite Druze (Calcium Carbonate (CaCO3)) — sedimentary

Geodal Limestone / Calcite Druze

Calcium Carbonate (CaCO3)

Granite (Granite (felsic intrusive igneous rock)) — igneous

Granite

Granite (felsic intrusive igneous rock)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Smoky Quartz (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz

Silicon Dioxide (SiO2)

Pyrite (Iron Pyrite (FeS2)) — Mineral

Pyrite

Iron Pyrite (FeS2)

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

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Schorl (Black Tourmaline) in Quartz Matrix (Schorl: NaFe3Al6(BO3)3Si6O18(OH)4 (Complex Borosilicate)) — mineral

Schorl (Black Tourmaline) in Quartz Matrix

Schorl: NaFe3Al6(BO3)3Si6O18(OH)4 (Complex Borosilicate)

Chalcopyrite ore (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite ore

Chalcopyrite (CuFeS2)

Granite with Tourmaline (Felsic intrusive igneous rock containing schorl (tourmaline)) — igneous

Granite with Tourmaline

Felsic intrusive igneous rock containing schorl (tourmaline)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Granite Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Granite Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss (Gneiss (High-grade regional metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade regional metamorphic rock)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Greenstone / Graywacke (Lithic Sandstone (Graywacke)) — sedimentary

Greenstone / Graywacke

Lithic Sandstone (Graywacke)

Beach Quartzite (Yellow-stained Quartz) (Quartzite (SiO2 with Iron oxide staining)) — metamorphic

Beach Quartzite (Yellow-stained Quartz)

Quartzite (SiO2 with Iron oxide staining)

Greenstone (Chlorite schist or metabasalt depending on specific composition) — Metamorphic

Greenstone

Chlorite schist or metabasalt depending on specific composition

White quartz in dark matrix (likely quartz-bearing breccia or polished composite specimen) (Quartz, SiO₂, in an unidentified dark silicate matrix) — mineral

White quartz in dark matrix (likely quartz-bearing breccia or polished composite specimen)

Quartz, SiO₂, in an unidentified dark silicate matrix