Rock Identifier

Category

Industrial By Product

Browse industrial by product specimens identified by the Rock Identifier community.

Quartzite with Quartz Veining (Quartzite (primarily SiO2)) — metamorphic

Quartzite with Quartz Veining

Quartzite (primarily SiO2)

Rough Diamond (Native Carbon (C)) — mineral

Rough Diamond

Native Carbon (C)

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

Grey Chalcedony (Agate)

Silicon Dioxide (SiO2)

Chert (Flint) (Silicon Dioxide (SiO2) - Microcrystalline Quartz) — sedimentary

Chert (Flint)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Metal Chain (Likely Steel or a Steel Alloy) (Steel (primarily iron and carbon); specific alloy unknown) — Man-made Object (Metal/Alloy)

Metal Chain (Likely Steel or a Steel Alloy)

Steel (primarily iron and carbon); specific alloy unknown

Man-made Object (Metal/Alloy)

Aquamarine (Beryl (Be3Al2Si6O18 with iron impurities)) — mineral

Aquamarine

Beryl (Be3Al2Si6O18 with iron impurities)

Amethyst (Silicon Dioxide (SiO2 with iron impurities)) — mineral

Amethyst

Silicon Dioxide (SiO2 with iron impurities)

Diamond (Carbon (C)) — mineral

Diamond

Carbon (C)

Satin Spar (Selenite) (Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)) — mineral

Satin Spar (Selenite)

Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)

Chert (Iron-stained) (Chert (Silicon Dioxide, SiO2)) — sedimentary

Chert (Iron-stained)

Chert (Silicon Dioxide, SiO2)

Blue Apatite (Fluorapatite (Ca5(PO4)3F)) — mineral

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Quartzite Pebble (Quartzite (primarily SiO2)) — metamorphic

Quartzite Pebble

Quartzite (primarily SiO2)

Milky Quartz with Iron Oxide Staining (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz with Iron Oxide Staining

Quartz (Silicon Dioxide, SiO2)

Banded Agate (Silicon Dioxide (SiO2)) — mineral

Banded Agate

Silicon Dioxide (SiO2)

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

Milky Quartz (Water-Worn Pebble)

Silicon Dioxide (SiO2)

Smoky Quartz (with inclusions) (Silicon Dioxide (SiO2)) — mineral

Smoky Quartz (with inclusions)

Silicon Dioxide (SiO2)

Chert (Iron-stained) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (Iron-stained)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

Precious Opal (Hydrated Silica (SiO2·nH2O)) — mineraloid

Precious Opal

Hydrated Silica (SiO2·nH2O)

Chert (Nodule) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Nodule)

Silicon Dioxide (SiO2)

Granitic Pegmatite (Granitic Pegmatite (primarily SiO2 with KAlSi3O8)) — igneous

Granitic Pegmatite

Granitic Pegmatite (primarily SiO2 with KAlSi3O8)

Honey Calcite (Calcite (Calcium Carbonate - CaCO3)) — mineral

Honey Calcite

Calcite (Calcium Carbonate - CaCO3)

Ruby (Corundum (Al2O3)) — mineral

Ruby

Corundum (Al2O3)

Anthracite Coal (Anthracite) — metamorphic

Anthracite Coal

Anthracite

Chert (Chert (Microcrystalline Quartz, SiO2)) — sedimentary

Chert

Chert (Microcrystalline Quartz, SiO2)

Ironstone Concretion / Hematite Nodules (Ferruginous Sedimentary Rock (primarily Hematite Fe2O3 and Goethite FeO(OH))) — sedimentary

Ironstone Concretion / Hematite Nodules

Ferruginous Sedimentary Rock (primarily Hematite Fe2O3 and Goethite FeO(OH))

Chalcedony (Chert/Flint) (Silicon Dioxide (SiO2)) — sedimentary

Chalcedony (Chert/Flint)

Silicon Dioxide (SiO2)

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

Basalt

Mafic volcanic rock (dominated by Plagioclase and Pyroxene)

Red Jasper (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Garnet Schist (Almandine Garnet in Schist (X3Al2(SiO4)3)) — metamorphic

Garnet Schist

Almandine Garnet in Schist (X3Al2(SiO4)3)

Moissanite (Silicon Carbide (SiC)) — mineral

Moissanite

Silicon Carbide (SiC)

Diamond (Diamond (C)) — mineral

Diamond

Diamond (C)

Ferruginous Quartz (Iron-stained Quartz) (Silicon Dioxide (SiO2) with Iron Oxide inclusions (Fe2O3)) — mineral

Ferruginous Quartz (Iron-stained Quartz)

Silicon Dioxide (SiO2) with Iron Oxide inclusions (Fe2O3)

Ferruginous Quartz (Silicon Dioxide (SiO2) with Hematite/Limonite impurities) — mineral

Ferruginous Quartz

Silicon Dioxide (SiO2) with Hematite/Limonite impurities

Chert (Jasper variety) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper variety)

Microcrystalline Quartz (SiO2)

Almandine Garnet in Schist Matrix (Almandine - Fe3Al2(SiO4)3) — metamorphic

Almandine Garnet in Schist Matrix

Almandine - Fe3Al2(SiO4)3

Sapphire (Corundum (Al2O3)) — mineral

Sapphire

Corundum (Al2O3)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Ferruginous Sandstone (River Pebble) (Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 cement)) — sedimentary

Ferruginous Sandstone (River Pebble)

Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 cement)

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

Diamond in Kimberlite

Diamond (C in Kimberlite Matrix)

Chalcedony (specifically Common Opal or Agate variant) (Silicon Dioxide (SiO2)) — mineral

Chalcedony (specifically Common Opal or Agate variant)

Silicon Dioxide (SiO2)

Rough Topaz (Aluminum silicate fluoride hydroxide [Al2SiO4(F, OH)2]) — mineral

Rough Topaz

Aluminum silicate fluoride hydroxide [Al2SiO4(F, OH)2]

Quartzite (Quartzite (Primary mineral: SiO2)) — metamorphic

Quartzite

Quartzite (Primary mineral: SiO2)