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

Rainbow Moonstone (White Labradorite (Feldspar variety)) — mineral

Rainbow Moonstone

White Labradorite (Feldspar variety)

Dalmatian jasper (Orbicular microcrystalline quartz rock, commonly rhyolitic or volcanic-feldspar matrix with black arfvedsonite/alkali-amphibole inclusions) — igneous

Dalmatian jasper

Orbicular microcrystalline quartz rock, commonly rhyolitic or volcanic-feldspar matrix with black arfvedsonite/alkali-amphibole inclusions

Pumice (Pumice (a highly vesicular volcanic rock)) — igneous

Pumice

Pumice (a highly vesicular volcanic rock)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Quartz with Mica inclusion (Silicon Dioxide (SiO2) with Muscovite/Biotite inclusions) — igneous

Quartz with Mica inclusion

Silicon Dioxide (SiO2) with Muscovite/Biotite inclusions

Uncertain polymict breccia or altered volcanic rock (Likely hydrothermally altered volcanic breccia; exact mineral identification requires testing) — igneous

Uncertain polymict breccia or altered volcanic rock

Likely hydrothermally altered volcanic breccia; exact mineral identification requires testing

Bauxite (Aluminum ore (mixture of gibbsite Al(OH)3, boehmite γ-AlO(OH), and diaspore α-AlO(OH))) — sedimentary

Bauxite

Aluminum ore (mixture of gibbsite Al(OH)3, boehmite γ-AlO(OH), and diaspore α-AlO(OH))

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Quartz (SiO₂)) — Mineral

Quartz

Quartz (SiO₂)

Pumice (Pumice (Felsic volcanic rock)) — igneous

Pumice

Pumice (Felsic volcanic rock)

Nephrite Jade (Ca2(Mg, Fe)5Si8O22(OH)2) — metamorphic

Nephrite Jade

Ca2(Mg, Fe)5Si8O22(OH)2

Green Fluorite (Calcium Fluoride (CaF2)) — mineral

Green Fluorite

Calcium Fluoride (CaF2)

Hypersthene (Hypersthene (Magnesium Iron Silicate - (Mg,Fe)SiO3)) — mineral

Hypersthene

Hypersthene (Magnesium Iron Silicate - (Mg,Fe)SiO3)

Talc (Soapstone variety) (Talc (Hydrated magnesium silicate) - Mg3Si4O10(OH)2) — mineral

Talc (Soapstone variety)

Talc (Hydrated magnesium silicate) - Mg3Si4O10(OH)2

Basalt with Sulfide/Pyrite inclusion (Aphanitic Mafic Igneous Rock (likely Basalt) with Pyrite (FeS2)) — igneous

Basalt with Sulfide/Pyrite inclusion

Aphanitic Mafic Igneous Rock (likely Basalt) with Pyrite (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Gneiss (Gneiss (High-grade Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (High-grade Metamorphic Rock)

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

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Sandstone-based Concrete Fragment (Cementitious Composite with Sedimentary Aggregate) — sedimentary (man-made/anthropogenic)

Sandstone-based Concrete Fragment

Cementitious Composite with Sedimentary Aggregate

sedimentary (man-made/anthropogenic)

Unidentified Rock Fragment (Unknown) — Rock

Unidentified Rock Fragment

Unknown

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Blue Sapphire (Corundum (Al2O3 - Aluminum Oxide)) — mineral

Blue Sapphire

Corundum (Al2O3 - Aluminum Oxide)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Pyrite (Fool's Gold) (Iron Disulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

Magnetite (Magnetite (Fe3O4)) — Mineral

Magnetite

Magnetite (Fe3O4)

Rose Quartz (Silicon Dioxide with trace inclusions (SiO2)) — mineral

Rose Quartz

Silicon Dioxide with trace inclusions (SiO2)

Granite (Granite) — igneous

Granite

Granite

Sulfur-bearing Limestone (Solfatara Specimen) (Sulfur-rich Bio-limestone (Calcium Carbonate with Native Sulfur, S8)) — sedimentary

Sulfur-bearing Limestone (Solfatara Specimen)

Sulfur-rich Bio-limestone (Calcium Carbonate with Native Sulfur, S8)

Basalt (Basalt) — igneous

Basalt

Basalt

Diabase (Dolerite) Cobble (Diabase / Dolerite) — igneous

Diabase (Dolerite) Cobble

Diabase / Dolerite

Epidote (Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — metamorphic

Epidote

Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Schorl (Black Tourmaline) in Quartz/Feldspar Matrix (NaFe3Al6(BO3)3Si6O18(OH)4 (Schorl)) — igneous

Schorl (Black Tourmaline) in Quartz/Feldspar Matrix

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

Greenschist (Greenschist (Chlorite-actinolite schist)) — metamorphic

Greenschist

Greenschist (Chlorite-actinolite schist)

Milky Quartz (Water-worn Pebble) (Quartz (Silicon Dioxide) - SiO2) — mineral

Milky Quartz (Water-worn Pebble)

Quartz (Silicon Dioxide) - SiO2

Raw Sapphire (Corundum) (Aluminum oxide (Al2O3)) — gemstone

Raw Sapphire (Corundum)

Aluminum oxide (Al2O3)

Sandstone (Arenite (SiO2 based with quartz grains)) — sedimentary

Sandstone

Arenite (SiO2 based with quartz grains)

Schist (Mica Schist (Complex Silicates)) — metamorphic

Schist

Mica Schist (Complex Silicates)

Quartz Pebble (Sea Glass-like texture) (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (Sea Glass-like texture)

Silicon Dioxide (SiO2)

Quartzite Pebble (Quartzite) — metamorphic

Quartzite Pebble

Quartzite