Rock Identifier

Category

Mineral Health

Browse mineral health specimens identified by the Rock Identifier community.

Learn about Mineral Health in the encyclopedia

Glauconite

Hutcheonite

Halite

Sperrylite

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Buergerite

Dolomite

Fluorite (Calcium fluoride (CaF2)) — mineral

Fluorite

Calcium fluoride (CaF2)

Malachite and Azurite on Gossan (Ironstone Matrix) (Cu2CO3(OH)2 (Malachite) on FeO(OH)·nH2O (Limonite/Gossan)) — mineral

Malachite and Azurite on Gossan (Ironstone Matrix)

Cu2CO3(OH)2 (Malachite) on FeO(OH)·nH2O (Limonite/Gossan)

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

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

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

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Small unidentified mineral specimen (Indeterminate from image; possibly a quartz-family crystal or sulfide mineral) — mineral

Small unidentified mineral specimen

Indeterminate from image; possibly a quartz-family crystal or sulfide mineral

Gneiss (Metamorphic Foliated Gneiss) — metamorphic

Gneiss

Metamorphic Foliated Gneiss

Green Fluorite (Calcium Fluoride (CaF2)) — mineral

Green Fluorite

Calcium Fluoride (CaF2)

Schist (Schist; commonly mica schist, composed chiefly of muscovite/biotite mica with quartz and feldspar) — metamorphic

Schist

Schist; commonly mica schist, composed chiefly of muscovite/biotite mica with quartz and feldspar

Quartz-rich pegmatite (likely mica-bearing granite) (Granitic pegmatite; chiefly quartz (SiO₂), feldspar, and mica (muscovite/biotite)) — igneous

Quartz-rich pegmatite (likely mica-bearing granite)

Granitic pegmatite; chiefly quartz (SiO₂), feldspar, and mica (muscovite/biotite)

Chrysocolla (Hydrated copper silicate - Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O) — mineral

Chrysocolla

Hydrated copper silicate - Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O

Sandstone (Clastic Sedimentary Rock) — sedimentary

Sandstone

Clastic Sedimentary Rock

Note regarding baguette production (not a rock) (Digital text image - Somali language) — not a rock

Note regarding baguette production (not a rock)

Digital text image - Somali language

Banded Gneiss Pebble (Gneiss (Metamorphic Rock)) — metamorphic

Banded Gneiss Pebble

Gneiss (Metamorphic Rock)

Likely gneiss pebble (Gneiss, a foliated metamorphic rock composed mainly of quartz, feldspar, and mica) — metamorphic

Likely gneiss pebble

Gneiss, a foliated metamorphic rock composed mainly of quartz, feldspar, and mica

Granite pebble (Granite, chiefly quartz, feldspar, and mica) — igneous

Granite pebble

Granite, chiefly quartz, feldspar, and mica

Weathered vesicular volcanic rock (likely basalt or andesite) (Amygdaloidal basalt/andesite; cavities may contain calcite, zeolites, or silica minerals) — igneous

Weathered vesicular volcanic rock (likely basalt or andesite)

Amygdaloidal basalt/andesite; cavities may contain calcite, zeolites, or silica minerals

Tumbled or weathered gneiss (Feldspar–quartz–mica gneiss (composition variable)) — metamorphic

Tumbled or weathered gneiss

Feldspar–quartz–mica gneiss (composition variable)

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

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic Extrusive volcanic rock)

Mixed Mineral Collection (Quartz, Amethyst, Rose Quartz, Pyrite, etc.) (Mixed Silicates and Sulfides (SiO2, FeS2)) — mineral

Mixed Mineral Collection (Quartz, Amethyst, Rose Quartz, Pyrite, etc.)

Mixed Silicates and Sulfides (SiO2, FeS2)

Blue Apatite (Calcium phosphate mineral, Ca5(PO4)3(F,Cl,OH)) — mineral

Blue Apatite

Calcium phosphate mineral, Ca5(PO4)3(F,Cl,OH)

Likely lepidolite-bearing mica or purple fluorite (Lepidolite: K(Li,Al)3(Si,Al)4O10(F,OH)2; alternatively fluorite: CaF2) — mineral

Likely lepidolite-bearing mica or purple fluorite

Lepidolite: K(Li,Al)3(Si,Al)4O10(F,OH)2; alternatively fluorite: CaF2

Vesuvianite (Idocrase) (Ca19(Al, Mg, Fe)13(SiO4)10(Si2O7)4(OH, F, O)10) — mineral

Vesuvianite (Idocrase)

Ca19(Al, Mg, Fe)13(SiO4)10(Si2O7)4(OH, F, O)10

Bornite (Bornite (Cu5FeS4)) — mineral

Bornite

Bornite (Cu5FeS4)

Epidote with quartz/feldspar (Epidote, Ca2(Al,Fe)3(SiO4)3(OH)) — metamorphic

Epidote with quartz/feldspar

Epidote, Ca2(Al,Fe)3(SiO4)3(OH)

Fossilized bone fragment, possibly vertebra (Fossil bone (mineralized hydroxyapatite; exact taxon indeterminate)) — fossil

Fossilized bone fragment, possibly vertebra

Fossil bone (mineralized hydroxyapatite; exact taxon indeterminate)

Picture Jasper (Silicon Dioxide (SiO2) with iron oxide and silicate minerals) — sedimentary

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and silicate minerals

Magnetite (Lodestone variant potential) (Magnetite (Fe3O4)) — mineral

Magnetite (Lodestone variant potential)

Magnetite (Fe3O4)

Sandstone Pebble (Arenite (SiO2 based)) — sedimentary

Sandstone Pebble

Arenite (SiO2 based)

Prehnite (Prehnite - Ca2Al(AlSi3O10)(OH)2) — mineral

Prehnite

Prehnite - Ca2Al(AlSi3O10)(OH)2

Sandstone Pebble (Arenite (SiO2 complex)) — sedimentary

Sandstone Pebble

Arenite (SiO2 complex)

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

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Tiger's Eye (Pseudomorph of Quartz after Crocidolite (SiO2)) — metamorphic

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Satin Spar (Gypsum) (Calcium Sulfate Dihydrate (CaSO4·2H2O)) — mineral

Satin Spar (Gypsum)

Calcium Sulfate Dihydrate (CaSO4·2H2O)

Green Fluorite (Calcium Fluoride (CaF2)) — mineral

Green Fluorite

Calcium Fluoride (CaF2)

Satin Spar (Gypsum) (Calcium Sulfate Dihydrate (CaSO4·2H2O)) — mineral

Satin Spar (Gypsum)

Calcium Sulfate Dihydrate (CaSO4·2H2O)

Fluorite (Calcium fluoride (CaF2)) — mineral

Fluorite

Calcium fluoride (CaF2)

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Vanadinite (Pb5(VO4)3Cl) — mineral

Vanadinite

Pb5(VO4)3Cl

Polished Hematite Tower (Hematite (Fe2O3)) — mineral

Polished Hematite Tower

Hematite (Fe2O3)

Chrysocolla (or Turquoise/Aventurine) (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O) — mineral

Chrysocolla (or Turquoise/Aventurine)

Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O

Stalagmite (Flowstone) (Speleothem (Calcium Carbonate, CaCO3)) — sedimentary

Stalagmite (Flowstone)

Speleothem (Calcium Carbonate, CaCO3)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)