Rock Identifier

Category

Industrial Byproduct

Browse industrial byproduct specimens identified by the Rock Identifier community.

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Adirondack Garnet

Adirondack Garnet

Almandine Garnet

Almandine Garnet

Diatomaceous Earth

Diatomaceous Earth

Tripolite

Tripolite

Diamond (set in jewelry) (Carbon (C)) — mineral

Diamond (set in jewelry)

Carbon (C)

mineral
Schist (Mica Schist) — metamorphic

Schist

Mica Schist

metamorphic
Pumice (Vesicular volcanic glass (primarily SiO2)) — igneous

Pumice

Vesicular volcanic glass (primarily SiO2)

igneous
Quartz Pebble (Silicon Dioxide (SiO2)) — Mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Mineral
Black Sapphire (Basaltic Blue Sapphire) (Corundum (Al2O3)) — mineral

Black Sapphire (Basaltic Blue Sapphire)

Corundum (Al2O3)

mineral
Anthracite Coal (Anthracite) — sedimentary

Anthracite Coal

Anthracite

sedimentary
Kimberlite (Kimberlite (Group I or II)) — igneous

Kimberlite

Kimberlite (Group I or II)

igneous
Yellow Quartzite (River Pebble) (Quartzite (primarily SiO2)) — metamorphic

Yellow Quartzite (River Pebble)

Quartzite (primarily SiO2)

metamorphic
Quartz (Iron-Stained Quartz Pebble) (Silicon Dioxide (SiO2)) — mineral

Quartz (Iron-Stained Quartz Pebble)

Silicon Dioxide (SiO2)

mineral
Sandstone (with Iron Staining) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily SiO2)

sedimentary
Biotite Schist (with Garnet and Pyrite) (K(Mg,Fe)3AlSi3O10(OH,F)2 (Biotite focus)) — metamorphic

Biotite Schist (with Garnet and Pyrite)

K(Mg,Fe)3AlSi3O10(OH,F)2 (Biotite focus)

metamorphic
Milky Quartz Mushroom Carving (Quartz (Silicon Dioxide, SiO2)) — mineral

Milky Quartz Mushroom Carving

Quartz (Silicon Dioxide, SiO2)

mineral
White Sapphire (Corundum (Al2O3)) — mineral

White Sapphire

Corundum (Al2O3)

mineral
Diamond (C (Carbon)) — mineral

Diamond

C (Carbon)

mineral
Quartzite (Gold/Tan River Cobble) (Quartzite (composed primarily of crystalline SiO2)) — metamorphic

Quartzite (Gold/Tan River Cobble)

Quartzite (composed primarily of crystalline SiO2)

metamorphic
Diamond (in Jewelry) (Carbon (C)) — mineral

Diamond (in Jewelry)

Carbon (C)

mineral
Sandstone (Sandstone (clastic sedimentary rock), primarily SiO2) — sedimentary

Sandstone

Sandstone (clastic sedimentary rock), primarily SiO2

sedimentary
Ruby (Corundum) (Aluminum Oxide (Al2O3) with Chromium traces) — mineral

Ruby (Corundum)

Aluminum Oxide (Al2O3) with Chromium traces

mineral
Red Sandstone (Arenite (with Iron Oxide pigmentation)) — Sedimentary

Red Sandstone

Arenite (with Iron Oxide pigmentation)

Sedimentary
Chert (often called Flint or Jasper) (Silicon Dioxide (SiO2)) — sedimentary

Chert (often called Flint or Jasper)

Silicon Dioxide (SiO2)

sedimentary
Bornite (Peacock Ore) (Bornite (Copper iron sulfide - Cu5FeS4)) — mineral

Bornite (Peacock Ore)

Bornite (Copper iron sulfide - Cu5FeS4)

mineral
Basalt River Stone (Basalt) — igneous

Basalt River Stone

Basalt

igneous
Cubic Zirconia (in Jewelry) (Zirconium Dioxide (ZrO2)) — mineral

Cubic Zirconia (in Jewelry)

Zirconium Dioxide (ZrO2)

mineral
Anthracite Coal (Anthracite (Carbon)) — sedimentary

Anthracite Coal

Anthracite (Carbon)

sedimentary
Quartzite (Quartzite (primarily SiO2)) — metamorphic

Quartzite

Quartzite (primarily SiO2)

metamorphic
Red Jasper (Silicon Dioxide (SiO2) with Hematite inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

sedimentary
Jasper / Chert (Red) (Cryptocrystalline quartz (SiO2)) — Sedimentary / Mineral

Jasper / Chert (Red)

Cryptocrystalline quartz (SiO2)

Sedimentary / Mineral
Riverstone Quartzite (Quartzite (primarily SiO2)) — metamorphic

Riverstone Quartzite

Quartzite (primarily SiO2)

metamorphic
Iron Ore (Goethite and Hematite) (Iron Oxyhydroxide (α-FeO(OH)) and Iron(III) oxide (Fe2O3)) — sedimentary

Iron Ore (Goethite and Hematite)

Iron Oxyhydroxide (α-FeO(OH)) and Iron(III) oxide (Fe2O3)

sedimentary
Moissanite (Silicon Carbide (SiC)) — mineral

Moissanite

Silicon Carbide (SiC)

mineral
Quartz with Muscovite Mica (SiO2 with KAl2(AlSi3O10)(OH)2) — mineral group

Quartz with Muscovite Mica

SiO2 with KAl2(AlSi3O10)(OH)2

mineral group
Chert / Jasper (Silicon Dioxide (SiO₂)) — sedimentary

Chert / Jasper

Silicon Dioxide (SiO₂)

sedimentary
Pegmatite (Coarse-grained Igneous Rock (Granitic Pegmatite)) — igneous

Pegmatite

Coarse-grained Igneous Rock (Granitic Pegmatite)

igneous
Agate (Cryptocrystalline quartz (SiO2)) — Mineral

Agate

Cryptocrystalline quartz (SiO2)

Mineral
Chert (Flint) (Chert (SiO2)) — sedimentary

Chert (Flint)

Chert (SiO2)

sedimentary
Rough Diamond (Diamond (C)) — mineral

Rough Diamond

Diamond (C)

mineral
Ferruginous Sandstone (Gozzan-like) (Ferruginous Sandstone (SiO2 with FeO(OH) inclusions)) — sedimentary

Ferruginous Sandstone (Gozzan-like)

Ferruginous Sandstone (SiO2 with FeO(OH) inclusions)

sedimentary
Limonite (Iron Ore) (Hydrous ferric oxides (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Hydrous ferric oxides (FeO(OH)·nH2O)

mineral
Ferruginous Sandstone (Ironstone) (Ferruginous Sandstone / Limonite-cemented Quartz Sandstone) — sedimentary

Ferruginous Sandstone (Ironstone)

Ferruginous Sandstone / Limonite-cemented Quartz Sandstone

sedimentary
Pumice (Pumice (Highly vesicular volcanic glass)) — igneous

Pumice

Pumice (Highly vesicular volcanic glass)

igneous
Sandstone (Quartzose Sandstone) (Clastic Sedimentary Rock (Lithic arenite / Quartz arenite)) — sedimentary

Sandstone (Quartzose Sandstone)

Clastic Sedimentary Rock (Lithic arenite / Quartz arenite)

sedimentary
Vesicular Basalt (Extrusive mafic igneous rock (Basalt)) — igneous

Vesicular Basalt

Extrusive mafic igneous rock (Basalt)

igneous