Rock Identifier

Category

Mineral Equivalent

Browse mineral equivalent specimens identified by the Rock Identifier community.

Learn about Mineral Equivalent in the encyclopedia

Ijolite

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Buergerite

Stainless Steel (Polished) (Ferrous Alloy containing Iron (Fe), Chromium (Cr), and Carbon (C)) — Mineral equivalent / Metal Alloy

Stainless Steel (Polished)

Ferrous Alloy containing Iron (Fe), Chromium (Cr), and Carbon (C)

Mineral equivalent / Metal Alloy

Diabase (Dolerite) (Diabase or Dolerite) — igneous

Diabase (Dolerite)

Diabase or Dolerite

Gabbro with Quartz Vein (Gabbro (mafic intrusive igneous rock)) — igneous

Gabbro with Quartz Vein

Gabbro (mafic intrusive igneous rock)

Rhyolite (Extrusive igneous rock (felsic)) — igneous

Rhyolite

Extrusive igneous rock (felsic)

Basalt (Basalt (Mafic volcanic rock)) — igneous

Basalt

Basalt (Mafic volcanic rock)

Porphyritic Andesite (Andesite (Intermediate Volcanic Rock)) — igneous

Porphyritic Andesite

Andesite (Intermediate Volcanic Rock)

Gabbro Pebble (Polished Beach/River Stone) (Gabbro) — igneous

Gabbro Pebble (Polished Beach/River Stone)

Gabbro

Dark mafic igneous rock, likely basalt or gabbro (Basalt–gabbroic rock; chiefly plagioclase feldspar and pyroxene, possibly olivine) — igneous

Dark mafic igneous rock, likely basalt or gabbro

Basalt–gabbroic rock; chiefly plagioclase feldspar and pyroxene, possibly olivine

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

Rhyolite

Rhyolite (felsic extrusive igneous rock)

Porphyritic Rhyolite (Porphyritic Rhyolite (SiO2)) — igneous

Porphyritic Rhyolite

Porphyritic Rhyolite (SiO2)

Gabbro (Water-worn Pebble) (Gabbro) — igneous

Gabbro (Water-worn Pebble)

Gabbro

Gabbro (Indigo Gabbro) (Gabbro (mafic intrusive igneous rock)) — igneous

Gabbro (Indigo Gabbro)

Gabbro (mafic intrusive igneous rock)

Gabbro (Stream-rounded Pebble) (Gabbro (Phaneritic Mafic Igneous Rock)) — igneous

Gabbro (Stream-rounded Pebble)

Gabbro (Phaneritic Mafic Igneous Rock)

Amethyst (Quartz (Silicon Dioxide, SiO2)) — gemstone

Amethyst

Quartz (Silicon Dioxide, SiO2)

Basalt (Aphanitic Mafic Igneous Rock) — igneous

Basalt

Aphanitic Mafic Igneous Rock

Gabbro (Water-Worn Pebble) (Gabbro (Plagioclase Feldspar and Pyroxene)) — igneous

Gabbro (Water-Worn Pebble)

Gabbro (Plagioclase Feldspar and Pyroxene)

Gabbro (River Cobble) (Gabbro (mafic intrusive rock)) — igneous

Gabbro (River Cobble)

Gabbro (mafic intrusive rock)

Emerald in Matrix (Emerald (Beryllium Aluminum Silicate - Be3Al2(SiO3)6)) — mineral

Emerald in Matrix

Emerald (Beryllium Aluminum Silicate - Be3Al2(SiO3)6)

Gabbro (Plagioclase-pyroxene intrusive igneous rock) — igneous

Gabbro

Plagioclase-pyroxene intrusive igneous rock

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Quartzite (Quartzite (SiO2 equivalent)) — metamorphic

Quartzite

Quartzite (SiO2 equivalent)

Pink granite (Granite; chiefly quartz, potassium feldspar, plagioclase, and biotite/hornblende) — igneous

Pink granite

Granite; chiefly quartz, potassium feldspar, plagioclase, and biotite/hornblende

Rhyolite with Lithophysae and Iron Oxide (Extrusive igneous rock / Felsic volcanic rock) — igneous

Rhyolite with Lithophysae and Iron Oxide

Extrusive igneous rock / Felsic volcanic rock

Gabbro (Gabbro (Coarse-grained Mafic Igneous Rock)) — igneous

Gabbro

Gabbro (Coarse-grained Mafic Igneous Rock)

Schist (Kyanite Schist) (Kyanite-Mica Schist (primarily Al2SiO5, KAl2(AlSi3O10)(OH)2, and SiO2)) — metamorphic

Schist (Kyanite Schist)

Kyanite-Mica Schist (primarily Al2SiO5, KAl2(AlSi3O10)(OH)2, and SiO2)

Geode (Quartz / Chalcedony Geode) (SiO2 (Silicon Dioxide)) — sedimentary

Geode (Quartz / Chalcedony Geode)

SiO2 (Silicon Dioxide)

Gabbro (Phaneritic Mafic Plutonic Rock) — igneous

Gabbro

Phaneritic Mafic Plutonic Rock

Gabbro (Gabbro (Mafic Plutonic Rock)) — igneous

Gabbro

Gabbro (Mafic Plutonic Rock)

Gabbro (Gabbro) — igneous

Gabbro

Gabbro

Gabbro (Gabbro (Mafic intrusive igneous rock)) — igneous

Gabbro

Gabbro (Mafic intrusive igneous rock)

Conglomerate (Conglomerate (clastic sedimentary rock)) — sedimentary

Conglomerate

Conglomerate (clastic sedimentary rock)

Gabbro (Gabbro (Mafic Intrusive Igneous Rock)) — igneous

Gabbro

Gabbro (Mafic Intrusive Igneous Rock)

Gabbro (likely with Pyrite/Sulfide mineralization) (Mafic Intrusive Igneous Rock) — igneous

Gabbro (likely with Pyrite/Sulfide mineralization)

Mafic Intrusive Igneous Rock

Rhyolite (Extrusive Felsic Igneous Rock) — igneous

Rhyolite

Extrusive Felsic Igneous Rock

Gabbro or coarse-grained dioritic rock (Plutonic mafic/intermediate rock; typically plagioclase feldspar + pyroxene ± amphibole/biotite) — igneous

Gabbro or coarse-grained dioritic rock

Plutonic mafic/intermediate rock; typically plagioclase feldspar + pyroxene ± amphibole/biotite

Gabbro (Basaltic Plutonic Rock (Gabbro)) — igneous

Gabbro

Basaltic Plutonic Rock (Gabbro)

Gabbro (Gabbro (Mg,Fe)2Si2O6 and CaAl2Si2O8) — igneous

Gabbro

Gabbro (Mg,Fe)2Si2O6 and CaAl2Si2O8

Gabbro (Gabbro) — igneous

Gabbro

Gabbro

Gabbro (Gabbro (mafic intrusive rock)) — igneous

Gabbro

Gabbro (mafic intrusive rock)

Diabase (Dolerite) (Mafic intrusive igneous rock) — igneous

Diabase (Dolerite)

Mafic intrusive igneous rock

Basalt (Basalt (Aphanitic Mafic Igneous Rock)) — igneous

Basalt

Basalt (Aphanitic Mafic Igneous Rock)

Porphyritic Rhyolite (Rhyolite (Porphyritic)) — igneous

Porphyritic Rhyolite

Rhyolite (Porphyritic)