Rock Identifier

Category

Industrial Byproduct (Anthropogenic Rock)

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

Sandstone (Arenite (primary component SiO2)) — sedimentary

Sandstone

Arenite (primary component SiO2)

Moqui Marble (Iron Oxide Concretion) (Iron Oxide Concretion (primarily Limonite/Hematite around a Sandstone center)) — sedimentary

Moqui Marble (Iron Oxide Concretion)

Iron Oxide Concretion (primarily Limonite/Hematite around a Sandstone center)

Granodiorite (River Pebble) (Granodiorite) — igneous

Granodiorite (River Pebble)

Granodiorite

Quartzite River Pebble (Quartzite (SiO2)) — metamorphic

Quartzite River Pebble

Quartzite (SiO2)

Chert (Common Opal variant) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Common Opal variant)

Microcrystalline Quartz (SiO2)

Sandstone (likely Quartzose Sandstone) (Arenite (primarily SiO2)) — sedimentary

Sandstone (likely Quartzose Sandstone)

Arenite (primarily SiO2)

Tiger's Eye (with Blue Tiger's Eye / Hawk's Eye) (Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)) — metamorphic

Tiger's Eye (with Blue Tiger's Eye / Hawk's Eye)

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)

River Stone (Granitic Gneiss) (Foliated Granitic Gneiss) — metamorphic

River Stone (Granitic Gneiss)

Foliated Granitic Gneiss

Sandstone (Ferruginous) (Arenite (primarily SiO2 with Fe2O3 staining)) — sedimentary

Sandstone (Ferruginous)

Arenite (primarily SiO2 with Fe2O3 staining)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Petrified Wood (Silicified Wood (SiO2)) — sedimentary

Petrified Wood

Silicified Wood (SiO2)

Sandstone (Arenite (primarily SiO2)) — sedimentary

Sandstone

Arenite (primarily SiO2)

Yellow Jasper (Silicon Dioxide (SiO2)) — sedimentary

Yellow Jasper

Silicon Dioxide (SiO2)

Quartz pebble with surface markings (Silicon Dioxide (SiO2)) — mineral

Quartz pebble with surface markings

Silicon Dioxide (SiO2)

Dendritic Agate (Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions) — mineral

Dendritic Agate

Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions

Jasper (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper

Silicon Dioxide (SiO2) with impurities

Shale (Laminated Mudstone) — sedimentary

Shale

Laminated Mudstone

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

Chalcedony (Common Agate)

Silicon Dioxide (SiO2)

Sandstone (River Cobble) (Clastic Sedimentary Rock (primarily Quartz with Feldspar)) — sedimentary

Sandstone (River Cobble)

Clastic Sedimentary Rock (primarily Quartz with Feldspar)

Sandstone (Arenite (SiO2 principal)) — sedimentary

Sandstone

Arenite (SiO2 principal)

Quartz / Common Agate (Silicon Dioxide (SiO2)) — mineral

Quartz / Common Agate

Silicon Dioxide (SiO2)

Clear Quartz Crystal (Quartz (Silicon Dioxide, SiO2)) — mineral

Clear Quartz Crystal

Quartz (Silicon Dioxide, SiO2)

Scoria (Red Lava Rock) (Scoria) — igneous

Scoria (Red Lava Rock)

Scoria

Fire Opal in Host Rock (Amorphous Hydrous Silica (SiO2·nH2O)) — mineral

Fire Opal in Host Rock

Amorphous Hydrous Silica (SiO2·nH2O)

Tanzanite (Blue Zoisite) (Ca2Al3(SiO4)(Si2O7)O(OH) + (V) - Vanadium-bearing Zoisite) — mineral

Tanzanite (Blue Zoisite)

Ca2Al3(SiO4)(Si2O7)O(OH) + (V) - Vanadium-bearing Zoisite

Quartzite (Quartzite (mostly SiO2)) — metamorphic

Quartzite

Quartzite (mostly SiO2)

Granite (Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite

Granite (Mainly Quartz, Alkali Feldspar, and Plagioclase)

Rhyolite (Rhyolite (felsic extrusive igneous rock)) — igneous

Rhyolite

Rhyolite (felsic extrusive igneous rock)

Gold Ore in Quartz/Schist (Auriferous Quartz and Sulfide-bearing Schist) — Metamorphic/Igneous (Hydrothermal)

Gold Ore in Quartz/Schist

Auriferous Quartz and Sulfide-bearing Schist

Metamorphic/Igneous (Hydrothermal)

Limonite (Iron Ore) (Limonite (Hydrous iron(III) oxide-hydroxide mixture, primarily FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (Hydrous iron(III) oxide-hydroxide mixture, primarily FeO(OH)·nH2O)

Quartzite (Quartzite (SiO2)) — metamorphic

Quartzite

Quartzite (SiO2)

Blue Dyed Agate (Chalcedony (cryptocrystalline variety of Quartz), SiO2) — mineral

Blue Dyed Agate

Chalcedony (cryptocrystalline variety of Quartz), SiO2

Vesicular Basalt (Scoria) (Vesicular Basalt) — igneous

Vesicular Basalt (Scoria)

Vesicular Basalt

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

Milky Quartz Pebble

Crystalline Silicon Dioxide (SiO2)

Chert (specifically Gray Chert/Flint) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Gray Chert/Flint)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Rose Quartz (Silicon dioxide / Quartz (SiO2)) — mineral

Rose Quartz

Silicon dioxide / Quartz (SiO2)

Olivine (Peridot) (Magnesium Iron Silicate (Mg, Fe)2SiO4) — mineral

Olivine (Peridot)

Magnesium Iron Silicate (Mg, Fe)2SiO4

Chalcedony (Agate/Quartz variety) (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony (Agate/Quartz variety)

Cryptocrystalline Quartz (SiO2)

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

Milky Quartz

Crystalline Silicon Dioxide (SiO2)

Clear Quartz (Crystalline Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Crystalline Silicon Dioxide (SiO2)

Ferruginous Quartz (Quartz (Silicon Dioxide, SiO2) with Iron Oxides) — mineral

Ferruginous Quartz

Quartz (Silicon Dioxide, SiO2) with Iron Oxides