Rock Identifier

Category

Mineral (Extraterrestrial)

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

Fluorite (Calcium fluoride (CaF2)) — mineral

Fluorite

Calcium fluoride (CaF2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Quartz (Variety of Rough Mineral Specimens) (Silicon Dioxide (SiO2)) — mineral

Quartz (Variety of Rough Mineral Specimens)

Silicon Dioxide (SiO2)

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

Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Gneiss (High-grade Metamorphic Gneiss) — metamorphic

Gneiss

High-grade Metamorphic Gneiss

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Man-made Jewelry Charm (Enameled Metal) (Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.) — Synthetic / Manufactured Artifact

Man-made Jewelry Charm (Enameled Metal)

Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.

Synthetic / Manufactured Artifact

Bornite (Bornite (Cu5FeS4)) — mineral

Bornite

Bornite (Cu5FeS4)

Limonite with Quartz (FeO(OH)·nH2O (Limonite) with SiO2 (Quartz)) — mineral

Limonite with Quartz

FeO(OH)·nH2O (Limonite) with SiO2 (Quartz)

Limonite (Ironstone) (Hydrated Iron Oxide (FeO(OH)·nH2O)) — mineral

Limonite (Ironstone)

Hydrated Iron Oxide (FeO(OH)·nH2O)

Turquoise (Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O) — mineral

Turquoise

Hydrated phosphate of copper and aluminium: CuAl6(PO4)4(OH)8·4H2O

Limonite (Gossan) (FeO(OH)·nH2O (Hydrated Iron Oxide)) — mineral

Limonite (Gossan)

FeO(OH)·nH2O (Hydrated Iron Oxide)

Pyrite in Matrix (Iron Sulfide (FeS2)) — mineral

Pyrite in Matrix

Iron Sulfide (FeS2)

Malachite (Copper carbonate hydroxide [Cu2CO3(OH)2]) — mineral

Malachite

Copper carbonate hydroxide [Cu2CO3(OH)2]

Kidney Stone (Nephrolith (typically Calcium Oxalate - CaC2O4)) — mineral

Kidney Stone

Nephrolith (typically Calcium Oxalate - CaC2O4)

Ironstone (likely Limonite or Goethite nodule) (Hydrothermally altered Ferric Hydroxide (FeO(OH)·nH2O)) — sedimentary

Ironstone (likely Limonite or Goethite nodule)

Hydrothermally altered Ferric Hydroxide (FeO(OH)·nH2O)

Ironstone Concretions (Ironstone) (Ferruginous Sandstone or Siltstone (Fe2O3)) — sedimentary

Ironstone Concretions (Ironstone)

Ferruginous Sandstone or Siltstone (Fe2O3)

Limonite with Hematite (Limonite (FeO(OH)·nH2O) and Hematite (Fe2O3)) — mineral

Limonite with Hematite

Limonite (FeO(OH)·nH2O) and Hematite (Fe2O3)

Lepidolite (Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)) — mineral

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Lepidolite (Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)) — mineral

Lepidolite

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Green Moonstone (Garnierite) (Nickel-bearing Magnesium Silicate (often a mix of Serpentine and Talc/Chlorite groups)) — mineral

Green Moonstone (Garnierite)

Nickel-bearing Magnesium Silicate (often a mix of Serpentine and Talc/Chlorite groups)

Fossilized Shark Tooth (Carcharodon (Galeocerdo sp. or Lamniform)) — mineral

Fossilized Shark Tooth

Carcharodon (Galeocerdo sp. or Lamniform)

Limonite (often after Hematite or Goethite) (Limonite (FeO(OH)·nH2O)) — mineral

Limonite (often after Hematite or Goethite)

Limonite (FeO(OH)·nH2O)

Limonite (Iron Ore) (Limonite; FeO(OH)·nH2O) — mineral

Limonite (Iron Ore)

Limonite; FeO(OH)·nH2O

Aquamarine (Beryl (Be3Al2Si6O18 with trace Fe2+)) — Mineral

Aquamarine

Beryl (Be3Al2Si6O18 with trace Fe2+)

Epidote (Epidote (formula: Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))) — mineral

Epidote

Epidote (formula: Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz (specifically Clear and Rose Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (specifically Clear and Rose Quartz)

Silicon Dioxide (SiO2)

Limonite (Iron Ore) (Limonite (unstructured hydrated iron(III) oxide-hydroxides, often FeO(OH)·nH2O)) — mineral

Limonite (Iron Ore)

Limonite (unstructured hydrated iron(III) oxide-hydroxides, often FeO(OH)·nH2O)

Snowflake Obsidian (Volcanic Glass with Cristobalite Inclusions) — igneous

Snowflake Obsidian

Volcanic Glass with Cristobalite Inclusions

Granite (Phaneritic Acidic Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite

Phaneritic Acidic Igneous Rock (composed of Quartz, Alkali Feldspar, and Plagioclase)

Bauxite (AlOx(OH)3-2x (mixture of Gibbsite, Boehmite, and Diaspore)) — sedimentary

Bauxite

AlOx(OH)3-2x (mixture of Gibbsite, Boehmite, and Diaspore)

Limonite Concretion (Limonite (Hydrated iron(III) oxide-hydroxides, FeO(OH)·nH2O)) — sedimentary

Limonite Concretion

Limonite (Hydrated iron(III) oxide-hydroxides, FeO(OH)·nH2O)

Obsidian (Amorphous volcanic glass (70-75% SiO2)) — igneous

Obsidian

Amorphous volcanic glass (70-75% SiO2)

Native Copper (Native Copper (Cu)) — mineral

Native Copper

Native Copper (Cu)

Quartz Geode/Druzy Quartz (Quartz (SiO₂)) — Mineral

Quartz Geode/Druzy Quartz

Quartz (SiO₂)

Sandstone (Weathered Cobble) (Clastic sedimentary rock (primarily SiO2)) — sedimentary

Sandstone (Weathered Cobble)

Clastic sedimentary rock (primarily SiO2)

Granite (Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)) — igneous

Granite

Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)

Amygdaloidal Basalt (Amygdaloidal Basalt (Mafic Extrusive volcanic rock)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Extrusive volcanic rock)

Fluorite (Purple/Blue variety) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Purple/Blue variety)

Calcium Fluoride (CaF2)

Sandstone (Banded) (Clastic Sedimentary Rock (primarily SiO2)) — sedimentary

Sandstone (Banded)

Clastic Sedimentary Rock (primarily SiO2)