Rock Identifier

Category

Mineral (Extraterrestrial)

Browse mineral (extraterrestrial) specimens identified by the Rock Identifier community.

Learn about Mineral (Extraterrestrial) in the encyclopedia

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Buergerite

Dolomite

Green Fluorite (Fluorite (Calcium Fluoride, CaF2)) — mineral

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Possible fossilized bone fragment (Indeterminate fossil bone; no species can be identified from this image) — fossil

Possible fossilized bone fragment

Indeterminate fossil bone; no species can be identified from this image

Quartz pebble (Silicon dioxide (SiO2)) — mineral

Quartz pebble

Silicon dioxide (SiO2)

Apatite (Fluorapatite / Chlorapatite (Ca5(PO4)3(F,Cl,OH))) — mineral

Apatite

Fluorapatite / Chlorapatite (Ca5(PO4)3(F,Cl,OH))

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

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Iron-stained milky quartz (Quartz (SiO₂), with iron-oxide staining) — mineral

Iron-stained milky quartz

Quartz (SiO₂), with iron-oxide staining

Iron-stained milky quartz pebble (Quartz (SiO₂), commonly with iron-oxide staining) — mineral

Iron-stained milky quartz pebble

Quartz (SiO₂), commonly with iron-oxide staining

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Limonite Concretion (Goethite/Limonite concretion (FeO(OH)·nH2O)) — sedimentary

Limonite Concretion

Goethite/Limonite concretion (FeO(OH)·nH2O)

Quartz Pebble (Quartz (Silicon Dioxide, SiO2)) — sedimentary

Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Biotite-rich gneiss (probable) (Foliated quartz–feldspar–biotite gneiss; composition commonly includes quartz (SiO₂), feldspar, and biotite mica) — metamorphic

Biotite-rich gneiss (probable)

Foliated quartz–feldspar–biotite gneiss; composition commonly includes quartz (SiO₂), feldspar, and biotite mica

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Limonite Geode / Ironstone Concretion (Hydrated iron oxide-hydroxide (FeO(OH)·n H2O)) — sedimentary

Limonite Geode / Ironstone Concretion

Hydrated iron oxide-hydroxide (FeO(OH)·n H2O)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — sedimentary

Quartz Pebble

Silicon Dioxide (SiO2)

Conglomerate (or Breccia / Porphyry) (Clastic Sedimentary Rock (Conglomerate / Sandstone)) — sedimentary

Conglomerate (or Breccia / Porphyry)

Clastic Sedimentary Rock (Conglomerate / Sandstone)

Polished blue-gray mineral specimen, likely galena-bearing ore (Galena (PbS), possibly mixed with quartz/calcite and secondary copper minerals) — mineral

Polished blue-gray mineral specimen, likely galena-bearing ore

Galena (PbS), possibly mixed with quartz/calcite and secondary copper minerals

Limonite (Iron Ore/Bog Iron) (Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore/Bog Iron)

Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)

Unidentified rough mineral fragments (Likely quartz- or feldspar-bearing rock; exact identification requires testing) — mineral

Unidentified rough mineral fragments

Likely quartz- or feldspar-bearing rock; exact identification requires testing

Amygdaloidal Basalt with Epidote/Chlorite (Basalt (containing (Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)))) — igneous

Amygdaloidal Basalt with Epidote/Chlorite

Basalt (containing (Ca2(Al2Fe3+)(SiO4)(Si2O7)O(OH)))

Quartz-bearing pegmatitic rock, likely granite/pegmatite (Feldspar–quartz pegmatite; chiefly K-feldspar, plagioclase, quartz, and possible mica) — igneous

Quartz-bearing pegmatitic rock, likely granite/pegmatite

Feldspar–quartz pegmatite; chiefly K-feldspar, plagioclase, quartz, and possible mica

Quartz-bearing pegmatite (Quartz (SiO₂) with feldspar and mica, likely a granitic pegmatite) — igneous

Quartz-bearing pegmatite

Quartz (SiO₂) with feldspar and mica, likely a granitic pegmatite

Magnetite (Lodestone) (Magnetite (Fe3O4)) — mineral

Magnetite (Lodestone)

Magnetite (Fe3O4)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Sandstone Pebble (Arenite (Sandstone)) — sedimentary

Sandstone Pebble

Arenite (Sandstone)

Sandstone (Arenite (SiO2 primarily)) — sedimentary

Sandstone

Arenite (SiO2 primarily)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

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

Limonite (Iron Ore)

FeO(OH)·nH2O (Hydrous ferric oxide)

Pegmatite (with Muscovite Mica and Quartz) (Granitic Pegmatite (chiefly KAlSi3O8, SiO2, and KAl2(AlSi3O10)(OH)2)) — igneous

Pegmatite (with Muscovite Mica and Quartz)

Granitic Pegmatite (chiefly KAlSi3O8, SiO2, and KAl2(AlSi3O10)(OH)2)

Granite (Granite (composed primarily of Quartz, Potassium Feldspar, Plagioclase, and Biotite/Amphibole)) — igneous

Granite

Granite (composed primarily of Quartz, Potassium Feldspar, Plagioclase, and Biotite/Amphibole)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Banded gneiss pebble (Gneiss, composed chiefly of quartz, feldspar, and mica/amphibole) — metamorphic

Banded gneiss pebble

Gneiss, composed chiefly of quartz, feldspar, and mica/amphibole

Gneiss (Gneiss (High-grade Metamorphic Rock)) — metamorphic

Gneiss

Gneiss (High-grade Metamorphic Rock)

Gneiss (Gneiss (High-grade metamorphic rock)) — metamorphic

Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Granite Pebble (Weathered) (Phaneritic Felsic Igneous Rock) — igneous

Granite Pebble (Weathered)

Phaneritic Felsic Igneous Rock

Banded Gneiss (Gneiss (Metamorphic Rock)) — metamorphic

Banded Gneiss

Gneiss (Metamorphic Rock)

Diorite (Diorite) — igneous

Diorite

Diorite

Limonite (often after Pyrite) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (often after Pyrite)

Limonite (FeO(OH)·nH2O)