Rock Identifier

Category

Mineral (Impactite)

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

Learn about Mineral (Impactite) in the encyclopedia

Suevite

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Buergerite

Limonite Geode / Ironstone Concretion (Hydrated Iron Oxide (FeO(OH)·nH2O)) — sedimentary

Limonite Geode / Ironstone Concretion

Hydrated Iron Oxide (FeO(OH)·nH2O)

Azurite with Malachite (Azurite: Cu3(CO3)2(OH)2 / Malachite: Cu2CO3(OH)2) — mineral

Azurite with Malachite

Azurite: Cu3(CO3)2(OH)2 / Malachite: Cu2CO3(OH)2

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

Epidote

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

Azurite in Matrix (Azurite (Cu3(CO3)2(OH)2)) — mineral

Azurite in Matrix

Azurite (Cu3(CO3)2(OH)2)

Fossil brachiopod shell (Brachiopoda; exact genus and species cannot be determined from the image) — fossil

Fossil brachiopod shell

Brachiopoda; exact genus and species cannot be determined from the image

Quartz-rich pegmatite (likely feldspar–quartz rock) (Granitic pegmatite; chiefly quartz (SiO₂) and feldspar, with possible mica/iron-oxide staining) — igneous

Quartz-rich pegmatite (likely feldspar–quartz rock)

Granitic pegmatite; chiefly quartz (SiO₂) and feldspar, with possible mica/iron-oxide staining

Blue-green mineral fragment, possibly turquoise (Unidentified copper-bearing mineral; turquoise is CuAl₆(PO₄)₄(OH)₈·4H₂O) — mineral

Blue-green mineral fragment, possibly turquoise

Unidentified copper-bearing mineral; turquoise is CuAl₆(PO₄)₄(OH)₈·4H₂O

Kidney Stone (Urolith / Calcium Oxalate Stone) (Calcium Oxalate Monohydrate (Whewellite) / Calcium Oxalate Dihydrate (Weddellite)) — mineral

Kidney Stone (Urolith / Calcium Oxalate Stone)

Calcium Oxalate Monohydrate (Whewellite) / Calcium Oxalate Dihydrate (Weddellite)

Likely amphibolite (Amphibolite, composed chiefly of hornblende (amphibole) and plagioclase feldspar) — metamorphic

Likely amphibolite

Amphibolite, composed chiefly of hornblende (amphibole) and plagioclase feldspar

Quartz-rich pegmatite fragment (Granite/pegmatite; chiefly quartz (SiO₂) and feldspar, with possible biotite or tourmaline) — igneous

Quartz-rich pegmatite fragment

Granite/pegmatite; chiefly quartz (SiO₂) and feldspar, with possible biotite or tourmaline

Banded Sandstone (Water-worn Pebble) (Arenite with mineral banding) — sedimentary

Banded Sandstone (Water-worn Pebble)

Arenite with mineral banding

Limonite / Goethite Ironstone (FeO(OH)·nH2O (Hydrous iron oxide)) — mineral

Limonite / Goethite Ironstone

FeO(OH)·nH2O (Hydrous iron oxide)

Fluorite Tower (Fluorite (Calcium Fluoride - CaF2)) — mineral

Fluorite Tower

Fluorite (Calcium Fluoride - CaF2)

Small metallic-looking rock fragment (Uncertain; possibly galena-bearing ore or mica-rich schist) — mineral

Small metallic-looking rock fragment

Uncertain; possibly galena-bearing ore or mica-rich schist

Sandstone with Secondary Mineral Encrustation (Arenite with Silica/Calcite deposits (SiO2 or CaCO3)) — sedimentary

Sandstone with Secondary Mineral Encrustation

Arenite with Silica/Calcite deposits (SiO2 or CaCO3)

Likely smoky quartz (Quartz (SiO₂), probably smoky variety) — mineral

Likely smoky quartz

Quartz (SiO₂), probably smoky variety

Sandstone with Ironstone Concretion (Arenite with Ferruginous Cement) — sedimentary

Sandstone with Ironstone Concretion

Arenite with Ferruginous Cement

Malachite (Malachite (Cu2CO3(OH)2)) — mineral

Malachite

Malachite (Cu2CO3(OH)2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

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

Malachite

Copper Carbonate Hydroxide (Cu2CO3(OH)2)

Fossil bone, possibly a vertebra (Fossilized vertebrate bone; exact taxon cannot be determined from the image) — fossil

Fossil bone, possibly a vertebra

Fossilized vertebrate bone; exact taxon cannot be determined from the image

Fossil Shark Tooth (Carcharocles (Otodus) sp. or similar fossilized Chondrichthyes tooth) — sedimentary

Fossil Shark Tooth

Carcharocles (Otodus) sp. or similar fossilized Chondrichthyes tooth

Gneiss (rounded cobble) (Quartz–feldspar–mica gneiss; exact mineral proportions cannot be determined from the image) — metamorphic

Gneiss (rounded cobble)

Quartz–feldspar–mica gneiss; exact mineral proportions cannot be determined from the image

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

Gabbro (Water-Worn Pebble)

Gabbro (Plagioclase Feldspar and Pyroxene)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

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

Granitic Gneiss

Gneiss (High-grade metamorphic rock)

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

Foliated amphibolite (likely augen or spotted amphibolite) (Amphibolite, composed chiefly of hornblende and plagioclase; exact identification requires close examination) — metamorphic

Foliated amphibolite (likely augen or spotted amphibolite)

Amphibolite, composed chiefly of hornblende and plagioclase; exact identification requires close examination

Likely mica schist (Mica-rich schist, probably biotite–quartz–feldspar schist) — metamorphic

Likely mica schist

Mica-rich schist, probably biotite–quartz–feldspar schist

Weathered conglomeratic rock, likely iron-stained sandstone (Probable ferruginous, clast-bearing sandstone; exact identification requires examination of a fresh surface) — sedimentary

Weathered conglomeratic rock, likely iron-stained sandstone

Probable ferruginous, clast-bearing sandstone; exact identification requires examination of a fresh surface

Copper-bearing altered rock, likely chrysocolla-bearing quartzite or breccia (Quartz (SiO₂) with copper silicate minerals, chiefly chrysocolla [approximately (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O], and iron oxides) — metamorphic

Copper-bearing altered rock, likely chrysocolla-bearing quartzite or breccia

Quartz (SiO₂) with copper silicate minerals, chiefly chrysocolla [approximately (Cu,Al)₂H₂Si₂O₅(OH)₄·nH₂O], and iron oxides

Granite (Intrusive Igneous Rock) — igneous

Granite

Intrusive Igneous Rock

Gneiss (Metamorphic Gneiss (High-grade regional metamorphism)) — metamorphic

Gneiss

Metamorphic Gneiss (High-grade regional metamorphism)

Raw greenish-blue quartz-bearing mineral specimen (Likely fluorite or chalcedony/quartz; exact identification requires hardness and crystal tests) — mineral

Raw greenish-blue quartz-bearing mineral specimen

Likely fluorite or chalcedony/quartz; exact identification requires hardness and crystal tests

Quartz (Smoky/Brown variety) (Silicon dioxide (SiO2)) — mineral

Quartz (Smoky/Brown variety)

Silicon dioxide (SiO2)

Pyrite (Iron Disulfide (FeS2)) — mineral

Pyrite

Iron Disulfide (FeS2)

Gypsum (Selenite sand) (Calcium sulfate dihydrate (CaSO4·2H2O)) — mineral

Gypsum (Selenite sand)

Calcium sulfate dihydrate (CaSO4·2H2O)

Fluorite on Host Rock (Calcium Fluoride (CaF2)) — mineral

Fluorite on Host Rock

Calcium Fluoride (CaF2)

Pyrite (Iron Pyrite (FeS2)) — mineral

Pyrite

Iron Pyrite (FeS2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Eudialyte (Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2) — mineral

Eudialyte

Na15Ca6Fe3Zr3Si(Si25O73)(O,OH,H2O)3(Cl,OH)2