Rock Identifier

Category

Mineral Health

Browse mineral health specimens identified by the Rock Identifier community.

Learn about Mineral Health in the encyclopedia

Glauconite

Glauconite

Hutcheonite

Hutcheonite

Halite

Halite

Sperrylite

Sperrylite

Baddeleyite

Baddeleyite

Anatase

Anatase

Brookite

Brookite

Talc

Talc

Euxenite

Euxenite

Dolomite

Dolomite

Buergerite

Buergerite

Eltyubyuite

Eltyubyuite

Ferruginous Quartz (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions) — mineral

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Selenite (Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O) — mineral

Selenite

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Tiger's Eye (with Blue Tiger's Eye / Hawk's Eye) (Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)) — metamorphic

Tiger's Eye (with Blue Tiger's Eye / Hawk's Eye)

Pseudomorph of Quartz after Crocidolite (SiO2 with inclusions)

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

Gneiss

High-grade regional metamorphic rock (Foliated)

Calcite (Calcite (CaCO3)) — Mineral

Calcite

Calcite (CaCO3)

Orthoclase Feldspar (KAlSi3O8 (Potassium Aluminum Silicate)) — mineral

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

Fluorite (Polished Point/Tower) (Calcium Fluoride (CaF2)) — mineral

Fluorite (Polished Point/Tower)

Calcium Fluoride (CaF2)

Granite (Granite (Felsic intrusive igneous rock)) — igneous

Granite

Granite (Felsic intrusive igneous rock)

Granodiorite (Granodiorite) — igneous

Granodiorite

Granodiorite

Gneiss (specifically a granitic gneiss cobble) (Gneiss (high-grade regional metamorphic rock)) — metamorphic

Gneiss (specifically a granitic gneiss cobble)

Gneiss (high-grade regional metamorphic rock)

Dyed Quartz (often sold as 'Blue Quartz' or 'Blue Agate') (Silicon Dioxide (SiO2) with artificial pigment) — mineral

Dyed Quartz (often sold as 'Blue Quartz' or 'Blue Agate')

Silicon Dioxide (SiO2) with artificial pigment

Granitic Gneiss (Gneiss (Complex silicate composition)) — metamorphic

Granitic Gneiss

Gneiss (Complex silicate composition)

Olivine (Peridot) (Magnesium Iron Silicate (Mg,Fe)2SiO4) — Mineral

Olivine (Peridot)

Magnesium Iron Silicate (Mg,Fe)2SiO4

Massive Quartz (Silicon dioxide (SiO2)) — mineral

Massive Quartz

Silicon dioxide (SiO2)

Amygdaloidal Basalt (Amygdaloidal Basalt (Mafic extrusive volcanic rock with secondary mineral infilling)) — igneous

Amygdaloidal Basalt

Amygdaloidal Basalt (Mafic extrusive volcanic rock with secondary mineral infilling)

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]

Turquoise (Turquoise (CuAl6(PO4)4(OH)8·4H2O)) — mineral

Turquoise

Turquoise (CuAl6(PO4)4(OH)8·4H2O)

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

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Goethite/Limonite Iron Ore Node (Goethite (FeO(OH)) or Limonite (mixture of hydrated iron oxides)) — mineral

Goethite/Limonite Iron Ore Node

Goethite (FeO(OH)) or Limonite (mixture of hydrated iron oxides)

Turquoise with Pyrite (Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O] with Iron Pyrite (FeS2)) — mineral

Turquoise with Pyrite

Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O] with Iron Pyrite (FeS2)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Dalmatian Stone (Dalmatian Jasper (a misnomer for an Aplite with Arfvedsonite spots)) — igneous

Dalmatian Stone

Dalmatian Jasper (a misnomer for an Aplite with Arfvedsonite spots)

Sandstone (likely Arkosic) (Arenite (SiO2 based)) — sedimentary

Sandstone (likely Arkosic)

Arenite (SiO2 based)

Sandstone (likely Arkose or Lithic) (Clastic sedimentary rock (SiO2 + impurities)) — sedimentary

Sandstone (likely Arkose or Lithic)

Clastic sedimentary rock (SiO2 + impurities)

Chalcopyrite (Copper Iron Sulfide (CuFeS2)) — mineral

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Sandstone (Ferruginous) (Arenite with Iron Oxides) — sedimentary

Sandstone (Ferruginous)

Arenite with Iron Oxides

Chert with Calcite Veins (Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3) intrusions) — sedimentary

Chert with Calcite Veins

Silicon Dioxide (SiO2) with Calcium Carbonate (CaCO3) intrusions

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)

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

Azurite-Malachite with Limonite

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

Quartz in Matrix (possibly Basalt or Siltstone host) (Silicon Dioxide (SiO2) in Host Rock) — mineral

Quartz in Matrix (possibly Basalt or Siltstone host)

Silicon Dioxide (SiO2) in Host Rock

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

Sandstone (Banded) (Clastic Sedimentary Rock: Arenite) — sedimentary

Sandstone (Banded)

Clastic Sedimentary Rock: Arenite

Quartz (Chatoyant or Milky variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Chatoyant or Milky variety)

Silicon Dioxide (SiO2)

Satin Spar (Gypsum) (Hydrous calcium sulfate (CaSO4·2H2O)) — mineral

Satin Spar (Gypsum)

Hydrous calcium sulfate (CaSO4·2H2O)

Magnetite (Magnetite (Fe3O4)) — mineral

Magnetite

Magnetite (Fe3O4)

Quartz Geode (Silicon Dioxide (SiO2)) — mineral

Quartz Geode

Silicon Dioxide (SiO2)

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

Limonite (Iron Ore)

Limonite (FeO(OH)·nH2O)

Fluorite (Calcium Fluoride (CaF2)) — mineral

Fluorite

Calcium Fluoride (CaF2)

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

Blue Apatite

Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)

Garden Quartz (Lodalite) (Silicon Dioxide (SiO2) with mineral inclusions) — mineral

Garden Quartz (Lodalite)

Silicon Dioxide (SiO2) with mineral inclusions

Granite or Pegmatite with Mica (Granitoid) — igneous

Granite or Pegmatite with Mica

Granitoid