Rock Identifier

Category

Mineral Composite

Browse mineral composite specimens identified by the Rock Identifier community.

Learn about Mineral Composite in the encyclopedia

Glauconite

Hutcheonite

Halite

Sperrylite

Sea Sediment Jasper

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Buergerite

K-Feldspar (Potassium Feldspar) (Potassium Feldspar (KAlSi3O8)) — mineral

K-Feldspar (Potassium Feldspar)

Potassium Feldspar (KAlSi3O8)

Chalcopyrite (Peacock Ore) (Chalcopyrite (CuFeS2)) — mineral

Chalcopyrite (Peacock Ore)

Chalcopyrite (CuFeS2)

Epidote (Epidote (Ca2(Al2,Fe3+)AlSi3O12(OH))) — mineral

Epidote

Epidote (Ca2(Al2,Fe3+)AlSi3O12(OH))

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

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and silicate minerals

Mixed Gemstone and Mineral Collection (Mixed Silica and Carbonate minerals (SiO2, CaSO4·2H2O, etc.)) — mineral

Mixed Gemstone and Mineral Collection

Mixed Silica and Carbonate minerals (SiO2, CaSO4·2H2O, etc.)

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

Banded Gneiss Pebble

Gneiss (Metamorphic Rock)

Sandstone Pebble (Quartzose Sandstone (Sedimentary Rock)) — sedimentary

Sandstone Pebble

Quartzose Sandstone (Sedimentary Rock)

Sandstone (Sedimentary Rock (Quartz arenite or arkose)) — sedimentary

Sandstone

Sedimentary Rock (Quartz arenite or arkose)

Granite (Intrusive igneous rock) — igneous

Granite

Intrusive igneous rock

Diorite (Porphyritic) / Granite (Plutonic Igneous Rock (Granodiorite / Diorite)) — igneous

Diorite (Porphyritic) / Granite

Plutonic Igneous Rock (Granodiorite / Diorite)

Serpentinite (Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4) — metamorphic

Serpentinite

Serpentinite (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Limonite (FeO(OH)·nH2O) — mineral

Limonite

FeO(OH)·nH2O

Green Fluorite (Calcium fluoride (CaF2)) — mineral

Green Fluorite

Calcium fluoride (CaF2)

Quartz (Druzy) (Silicon Dioxide (SiO2)) — mineral

Quartz (Druzy)

Silicon Dioxide (SiO2)

Fluorite with Quartz coating (Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)) — mineral

Fluorite with Quartz coating

Calcium Fluoride (CaF2) with Silicon Dioxide (SiO2)

Fluorite (Calcium fluoride, CaF2) — Mineral

Fluorite

Calcium fluoride, CaF2

Fossil Shark Tooth (Squalicorax (likely Squalicorax pristodontus or Squalicorax falcatus)) — fossil

Fossil Shark Tooth

Squalicorax (likely Squalicorax pristodontus or Squalicorax falcatus)

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)

Schist (Schist) — metamorphic

Schist

Schist

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

Limonite / Ironstone

Hydrated Iron Oxide (FeO(OH)·nH2O)

Quartz geode (Microcrystalline and crystalline quartz (SiO₂), likely chalcedony-lined geode) — mineral

Quartz geode

Microcrystalline and crystalline quartz (SiO₂), likely chalcedony-lined geode

Red Siltstone (Siltstone (composed of Quartz and Clay minerals)) — sedimentary

Red Siltstone

Siltstone (composed of Quartz and Clay minerals)

Chrysocolla (Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O) — mineral

Chrysocolla

Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O

Sandstone (Arenite (SiO2 principal composition)) — sedimentary

Sandstone

Arenite (SiO2 principal composition)

Petrified Wood / Fossilized Wood (Silicified Wood (Silicon Dioxide - SiO2)) — fossil

Petrified Wood / Fossilized Wood

Silicified Wood (Silicon Dioxide - SiO2)

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

Limonite (Iron Ore)

FeO(OH)·nH2O

Black Sand (Magnetite Sand) (Magnetite (Fe3O4)) — mineral

Black Sand (Magnetite Sand)

Magnetite (Fe3O4)

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

Gneiss

Metamorphic Gneiss (High-grade regional metamorphism)

Granite (Intrusive Igneous Rock (Felsic)) — igneous

Granite

Intrusive Igneous Rock (Felsic)

Sandstone (Arenite) — sedimentary

Sandstone

Arenite

Galena (Lead sulfide (PbS)) — mineral

Galena

Lead sulfide (PbS)

Carved serpentine wing sculpture (Serpentine-group rock, chiefly antigorite/lizardite: Mg3Si2O5(OH)4) — metamorphic

Carved serpentine wing sculpture

Serpentine-group rock, chiefly antigorite/lizardite: Mg3Si2O5(OH)4

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

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Limonite/Goethite (Iron Ore) (Hydrous ferric oxides (FeO(OH)·nH2O)) — mineral

Limonite/Goethite (Iron Ore)

Hydrous ferric oxides (FeO(OH)·nH2O)

Limonite (Iron Ore) (FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide mixture)) — mineral

Limonite (Iron Ore)

FeO(OH)·nH2O (Hydrated iron(III) oxide-hydroxide mixture)

Iron Ore (Limonite and Hematite) (Goethite/Limonite (FeO(OH)·nH2O) and Hematite (Fe2O3)) — mineral

Iron Ore (Limonite and Hematite)

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

Limonite (Iron Ore) (Hydrated Iron(III) Oxide-Hydroxide (FeO(OH)·nH2O)) — sedimentary

Limonite (Iron Ore)

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

Silver Nuggets (Natural or Cast) (Native Silver (Ag)) — mineral

Silver Nuggets (Natural or Cast)

Native Silver (Ag)

Quartz Geode (Silicon Dioxide (SiO2) in Geodic Cavity) — sedimentary

Quartz Geode

Silicon Dioxide (SiO2) in Geodic Cavity

Pyrite (Fool's Gold) (Iron Sulfide (FeS2)) — mineral

Pyrite (Fool's Gold)

Iron Sulfide (FeS2)

Black Spinel (Magnesium Aluminum Oxide (MgAl2O4)) — mineral

Black Spinel

Magnesium Aluminum Oxide (MgAl2O4)