Rock Identifier

Category

Industrial By Product

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

Learn about Industrial By Product in the encyclopedia

Adirondack Garnet

Adirondack Garnet

Brazilian Agate

Brazilian Agate

Almandine Garnet

Almandine Garnet

Tripolite

Diatomaceous Earth

Vanadium Tourmaline

Vanadium Tourmaline

Seam Agate

Cat's Eye Obsidian

Perthite

Orange Tourmaline

Orange Tourmaline

Pink Agate

Purple Agate

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Hematite / Goethite (Iron Ore) (Iron Oxide (Fe2O3 / FeO(OH))) — mineral

Hematite / Goethite (Iron Ore)

Iron Oxide (Fe2O3 / FeO(OH))

Man-made Synthetic Material (Not a rock or mineral) (Polyester (Polyethylene terephthalate) / Faux Fur) — Synthetic / Textile

Man-made Synthetic Material (Not a rock or mineral)

Polyester (Polyethylene terephthalate) / Faux Fur

Synthetic / Textile

White quartz pebbles (Quartz, SiO₂ (likely milky quartz)) — mineral

White quartz pebbles

Quartz, SiO₂ (likely milky quartz)

Magnetite Ore (Magnetite (Fe3O4)) — mineral

Magnetite Ore

Magnetite (Fe3O4)

Weathered iron-rich rock, possibly laterite or altered basalt (Probable ferruginous basalt/lat eritic material; exact identification requires testing) — igneous

Weathered iron-rich rock, possibly laterite or altered basalt

Probable ferruginous basalt/lat eritic material; exact identification requires testing

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Sulfur (Native Sulfur (S)) — mineral

Sulfur

Native Sulfur (S)

Seraphinite (Clinochlore (Mg,Fe2+)5Al(Si3Al)O10(OH)8) — mineral

Seraphinite

Clinochlore (Mg,Fe2+)5Al(Si3Al)O10(OH)8

Botryoidal Goethite (Goethite (α-Fe3+O(OH))) — mineral

Botryoidal Goethite

Goethite (α-Fe3+O(OH))

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

Milky Quartz Pebble

Silicon Dioxide (SiO2)

Likely pyrite-bearing rock or pyrite fragment (Pyrite (FeS₂), possibly mixed with quartz or carbonate matrix) — mineral

Likely pyrite-bearing rock or pyrite fragment

Pyrite (FeS₂), possibly mixed with quartz or carbonate matrix

Kyanite (Kyanite (Al2SiO5)) — Mineral

Kyanite

Kyanite (Al2SiO5)

Scoria (vesicular basalt) (Scoria; mafic volcanic rock composed mainly of plagioclase, pyroxene, and often olivine) — igneous

Scoria (vesicular basalt)

Scoria; mafic volcanic rock composed mainly of plagioclase, pyroxene, and often olivine

Weathered vesicular volcanic rock (likely scoria or vesicular basalt) (Vesicular basalt/scoria; primarily plagioclase, pyroxene, olivine, and volcanic glass) — igneous

Weathered vesicular volcanic rock (likely scoria or vesicular basalt)

Vesicular basalt/scoria; primarily plagioclase, pyroxene, olivine, and volcanic glass

Pumice (Pumice) — igneous

Pumice

Pumice

Sandstone (Sedimentary Rock (Quartz arenite/Arkose)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite/Arkose)

Pumice (Pumice (volcanic glass foam)) — igneous

Pumice

Pumice (volcanic glass foam)

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

Chevron Amethyst

Silicon Dioxide (SiO2) with iron impurities

Pumice (Pumice (Vesicular Rhyolite/Andesite)) — igneous

Pumice

Pumice (Vesicular Rhyolite/Andesite)

Quartzite Pebble (Metamorphic Quartz (SiO2)) — metamorphic

Quartzite Pebble

Metamorphic Quartz (SiO2)

Pumice (Pumice (a highly vesicular volcanic glass)) — igneous

Pumice

Pumice (a highly vesicular volcanic glass)

Raw botryoidal goethite/limonite specimen (Goethite (α-FeO(OH)), commonly mixed with limonite (hydrated iron oxides)) — mineral

Raw botryoidal goethite/limonite specimen

Goethite (α-FeO(OH)), commonly mixed with limonite (hydrated iron oxides)

Prehnite (Prehnite (Ca2Al2Si3O10(OH)2)) — mineral

Prehnite

Prehnite (Ca2Al2Si3O10(OH)2)

Hematite (Ferric Oxide (Fe2O3)) — mineral

Hematite

Ferric Oxide (Fe2O3)

Red Hematite (Iron(III) oxide (Fe2O3)) — mineral

Red Hematite

Iron(III) oxide (Fe2O3)

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Hematite (Iron(III) oxide (Fe2O3)) — mineral

Hematite

Iron(III) oxide (Fe2O3)

Pumice (Pumice; highly vesicular volcanic rock, commonly silica-rich volcanic glass with feldspar and minor other minerals) — igneous

Pumice

Pumice; highly vesicular volcanic rock, commonly silica-rich volcanic glass with feldspar and minor other minerals

Tumbled carnelian (Chalcedony (microcrystalline quartz), SiO₂) — gemstone

Tumbled carnelian

Chalcedony (microcrystalline quartz), SiO₂

Pumice (Pumice (Vesicular intermediate to felsic volcanic glass)) — igneous

Pumice

Pumice (Vesicular intermediate to felsic volcanic glass)

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

Amethyst

Silicon Dioxide (SiO2) with iron impurities

Weathered Sandstone (Quartz Arenite / Clastic Sedimentary Rock) — sedimentary

Weathered Sandstone

Quartz Arenite / Clastic Sedimentary Rock

Pumice (Pumice (Volcanic Rock)) — igneous

Pumice

Pumice (Volcanic Rock)

Yellow Aventurine (Yellow Quartz) (Silicon Dioxide (SiO2) with inclusions of Muscovite or Mica) — Mineral (variant of Quartz)

Yellow Aventurine (Yellow Quartz)

Silicon Dioxide (SiO2) with inclusions of Muscovite or Mica

Mineral (variant of Quartz)

Pumice (Pumice (a highly vesicular volcanic glass)) — igneous

Pumice

Pumice (a highly vesicular volcanic glass)

Coal (likely Anthracite) (Anthracite coal) — sedimentary

Coal (likely Anthracite)

Anthracite coal

Pumice (Pumice (Vesicular volcanic glass)) — igneous

Pumice

Pumice (Vesicular volcanic glass)

Quartzite (River Cobble) (Quartzite (mostly SiO2)) — metamorphic

Quartzite (River Cobble)

Quartzite (mostly SiO2)

Weathered blue-speckled granite or granitic rock (Granite, likely quartz–feldspar–mica aggregate; blue grains may be sodic feldspar or altered minerals) — igneous

Weathered blue-speckled granite or granitic rock

Granite, likely quartz–feldspar–mica aggregate; blue grains may be sodic feldspar or altered minerals

Goldstone (Brown) (Aventurine Glass (Silicon Dioxide infused with Copper crystals)) — mineraloid (man-made glass)

Goldstone (Brown)

Aventurine Glass (Silicon Dioxide infused with Copper crystals)

mineraloid (man-made glass)

Malachite (Copper Carbonate Hydroxide, Cu2CO3(OH)2) — mineral

Malachite

Copper Carbonate Hydroxide, Cu2CO3(OH)2