Rock Identifier

Category

Industrial Byproduct (Anthropogenic Rock)

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

Pumice or Vesicular Basalt/Scoria (water-worn) (Vesicular volcanic rock) — igneous

Pumice or Vesicular Basalt/Scoria (water-worn)

Vesicular volcanic rock

Pyritic Mudstone (Argillaceous rock (FeS2)) — sedimentary

Pyritic Mudstone

Argillaceous rock (FeS2)

Limestone (Carbonate rock (CaCO3)) — sedimentary

Limestone

Carbonate rock (CaCO3)

Gneiss (with Quartzite layers) (Gneissic Metamorphic Rock) — metamorphic

Gneiss (with Quartzite layers)

Gneissic Metamorphic Rock

Basalt (Weathered) (Mafic Igneous Rock) — igneous

Basalt (Weathered)

Mafic Igneous Rock

Conglomerate (Conglomerative Sedimentary Rock) — sedimentary

Conglomerate

Conglomerative Sedimentary Rock

Basalt (Mafic Igneous Rock) — igneous

Basalt

Mafic Igneous Rock

Conglomerate (or Breccia) (Clastic Sedimentary Rock) — sedimentary

Conglomerate (or Breccia)

Clastic Sedimentary Rock

Gneiss (Gneiss (Metamorphic rock)) — metamorphic

Gneiss

Gneiss (Metamorphic rock)

Sandstone (likely Graywacke or Lithic Sandstone) (Clastic Sedimentary Rock) — sedimentary

Sandstone (likely Graywacke or Lithic Sandstone)

Clastic Sedimentary Rock

Gneiss (specifically Granitic Gneiss) (Gneissic Metamorphic Rock) — metamorphic

Gneiss (specifically Granitic Gneiss)

Gneissic Metamorphic Rock

Conglomerate (Conglomerate (Sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (Sedimentary rock)

River Pebble (Siltstone/Mudstone) (Clastic sedimentary rock) — sedimentary

River Pebble (Siltstone/Mudstone)

Clastic sedimentary rock

Granite (Granite (a plutonic rock)) — Igneous

Granite

Granite (a plutonic rock)

Slate (Foliated Metamorphic Rock) — metamorphic

Slate

Foliated Metamorphic Rock

Greenstone Porphyry (Porphyritic Metavolcanic Rock) — igneous

Greenstone Porphyry

Porphyritic Metavolcanic Rock

Gneiss (Gneissic Metamorphic Rock) — metamorphic

Gneiss

Gneissic Metamorphic Rock

Vesicular Basalt (Mafic Igneous Rock) — igneous

Vesicular Basalt

Mafic Igneous Rock

Pumice or Scoria (Vesicular volcanic rock) — Igneous

Pumice or Scoria

Vesicular volcanic rock

Basalt (River Stone) (Mafic volcanic rock) — igneous

Basalt (River Stone)

Mafic volcanic rock

Basalt (Mafic Volcanic Rock) — igneous

Basalt

Mafic Volcanic Rock

Banded Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (Metamorphic Rock)

Banded Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (Metamorphic Rock)

Sandstone (Arenite (SiO2 based)) — sedimentary

Sandstone

Arenite (SiO2 based)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Basalt (Extrusive mafic igneous rock) — igneous

Basalt

Extrusive mafic igneous rock

Granodiorite (Granodiorite (Intermediate plutonic rock)) — igneous

Granodiorite

Granodiorite (Intermediate plutonic rock)

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

Sandstone

Arenite (composed primarily of SiO2)

Sandstone (Arenite (Sedimentary rock composed of sand-sized grains)) — sedimentary

Sandstone

Arenite (Sedimentary rock composed of sand-sized grains)

Granite (Intrusive Igneous Rock (composed primarily of Quartz: SiO2, Feldspar: KAlSi3O8, and Mica: KAl2(AlSi3O10)(OH)2)) — igneous

Granite

Intrusive Igneous Rock (composed primarily of Quartz: SiO2, Feldspar: KAlSi3O8, and Mica: KAl2(AlSi3O10)(OH)2)

Anthracite Coal (Anthracite) — metamorphic

Anthracite Coal

Anthracite

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

Basalt

Mafic Igneous Rock (composed primarily of Pyroxene and Plagioclase Feldspar)

Pink Granite (Granite (Alkali Feldspar Granite)) — igneous

Pink Granite

Granite (Alkali Feldspar Granite)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Vesicular Basalt with Siltstone (Mafic Volcanic Rock (Basaltic Composition)) — igneous

Vesicular Basalt with Siltstone

Mafic Volcanic Rock (Basaltic Composition)

Sandstone (Tafoni Weathered) (Arenite (part of the Sandstone family)) — sedimentary

Sandstone (Tafoni Weathered)

Arenite (part of the Sandstone family)

Serpentinite (Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4) — metamorphic

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Banded Serpentine (Serpentinite (Mg3Si2O5(OH)4)) — metamorphic

Banded Serpentine

Serpentinite (Mg3Si2O5(OH)4)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Sandstone (Arenite (SiO2 principal component)) — sedimentary

Sandstone

Arenite (SiO2 principal component)

Basalt (Basalt) — igneous

Basalt

Basalt