Rock Identifier

Category

Industrial Byproduct (Anthropogenic Rock)

Browse industrial byproduct (anthropogenic rock) specimens identified by the Rock Identifier community.

Blue Sapphire (Tumbled/Polished) (Corundum (Al2O3)) — mineral

Blue Sapphire (Tumbled/Polished)

Corundum (Al2O3)

Basalt (Basalt (Mafic Extrusive Igneous Rock)) — igneous

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Bauxite (Bauxite (Al(OH)3 mixed with Fe2O3 and clay minerals)) — sedimentary

Bauxite

Bauxite (Al(OH)3 mixed with Fe2O3 and clay minerals)

Pumice (Pumice (volcanic glass formed of highly vesicular rough textured rock)) — igneous

Pumice

Pumice (volcanic glass formed of highly vesicular rough textured rock)

Quartz (Iron-stained) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-stained)

Silicon Dioxide (SiO2)

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

Blue Sapphire

Corundum (Al2O3 - Aluminum Oxide)

Rutilated Quartz (Quartz (SiO2) with Rutile (TiO2) inclusions) — Mineral

Rutilated Quartz

Quartz (SiO2) with Rutile (TiO2) inclusions

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

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Milky Quartz Pebble (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

White Topaz (Topaz [Al2SiO4(F,OH)2]) — mineral

White Topaz

Topaz [Al2SiO4(F,OH)2]

Quartz (Iron-Stained or Milky Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-Stained or Milky Quartz)

Silicon Dioxide (SiO2)

Basalt (Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)) — Igneous

Basalt

Mafic Igneous Rock (primarily Plagioclase Feldspar and Pyroxene)

Vesicular Basalt with Oxidation (Scoriaceous Olivine Basalt (Mafic volcanic rock)) — igneous

Vesicular Basalt with Oxidation

Scoriaceous Olivine Basalt (Mafic volcanic rock)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Diamond in Kimberlite (Diamond (C in Kimberlite Matrix)) — igneous

Diamond in Kimberlite

Diamond (C in Kimberlite Matrix)

Marble (Carrara style) (Recrystallized Calcite-rich Metamorphic Rock (CaCO3)) — metamorphic

Marble (Carrara style)

Recrystallized Calcite-rich Metamorphic Rock (CaCO3)

Basalt (Mafic volcanic rock (dominated by Plagioclase and Pyroxene)) — igneous

Basalt

Mafic volcanic rock (dominated by Plagioclase and Pyroxene)

Rough Blue Sapphire (Corundum (Al2O3)) — mineral

Rough Blue Sapphire

Corundum (Al2O3)

Iron-stained Quartz (Gossan/Limonite-coated Quartz) (Silicon Dioxide (SiO2) with Hydrated Iron Oxides (FeO(OH)·nH2O)) — mineral

Iron-stained Quartz (Gossan/Limonite-coated Quartz)

Silicon Dioxide (SiO2) with Hydrated Iron Oxides (FeO(OH)·nH2O)

Agate (specifically a Thunderegg/Agate Nodule) (Cryptocrystalline Quartz (SiO2)) — mineral

Agate (specifically a Thunderegg/Agate Nodule)

Cryptocrystalline Quartz (SiO2)

Diabase (Greenstone) (Diabase (also known as Dolerite)) — igneous

Diabase (Greenstone)

Diabase (also known as Dolerite)

Mica Schist (Mica Schist (primarily Muscovite and Biotite composition)) — metamorphic

Mica Schist

Mica Schist (primarily Muscovite and Biotite composition)

Anthracite Coal (Anthracite (Carbon-based sedimentary-metamorphic rock)) — metamorphic

Anthracite Coal

Anthracite (Carbon-based sedimentary-metamorphic rock)

Garnet Schist (Almandine Garnet-Mica Schist (X₃Y₂(SiO₄)₃)) — metamorphic

Garnet Schist

Almandine Garnet-Mica Schist (X₃Y₂(SiO₄)₃)

Yellow Quartz (Citrine/Quartzite Pebble) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrine/Quartzite Pebble)

Silicon Dioxide (SiO2)

Desert Rose (Baryte/Gypsum Rosette) (Baryte (BaSO4) or Gypsum (CaSO4·2H2O)) — mineral

Desert Rose (Baryte/Gypsum Rosette)

Baryte (BaSO4) or Gypsum (CaSO4·2H2O)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

Sandstone (Arenite (composed primarily of SiO2)) — sedimentary

Sandstone

Arenite (composed primarily of SiO2)

Red Sandstone (Arenite (Fe2O3 rich)) — sedimentary

Red Sandstone

Arenite (Fe2O3 rich)

Quartz Geode (Silicon Dioxide (SiO2)) — Mineral/Sedimentary

Quartz Geode

Silicon Dioxide (SiO2)

Mineral/Sedimentary

Quartzite (Quartzite (composed primarily of SiO2)) — metamorphic

Quartzite

Quartzite (composed primarily of SiO2)

Quartz / Common Opal Transition (Silicon Dioxide (SiO2)) — mineral

Quartz / Common Opal Transition

Silicon Dioxide (SiO2)

Quartzite Pebble (Quartzite (SiO2)) — metamorphic

Quartzite Pebble

Quartzite (SiO2)

Gneiss (specifically Micaceous Gneiss) (Gneiss (High-grade Regional Metamorphic Rock)) — metamorphic

Gneiss (specifically Micaceous Gneiss)

Gneiss (High-grade Regional Metamorphic Rock)

Marble (Recrystallized Calcite (CaCO3)) — metamorphic

Marble

Recrystallized Calcite (CaCO3)

Diamond Plate (Steel) (Alloyed Carbon Steel or Aluminum with 'Durbar' pattern) — not a rock (Man-made industrial metal)

Diamond Plate (Steel)

Alloyed Carbon Steel or Aluminum with 'Durbar' pattern

not a rock (Man-made industrial metal)

Garnet-Bearing Schist (Almandine Garnet Micaceous Schist) — metamorphic

Garnet-Bearing Schist

Almandine Garnet Micaceous Schist

Shale or Siltstone (Sedimentary Clastic Rock (Variable mineral composition including quartz and clay minerals)) — sedimentary

Shale or Siltstone

Sedimentary Clastic Rock (Variable mineral composition including quartz and clay minerals)

Blue Sapphire (Corundum (Al2O3 - Aluminum Oxide with Iron and Titanium impurities)) — mineral

Blue Sapphire

Corundum (Al2O3 - Aluminum Oxide with Iron and Titanium impurities)