Pyrite
Iron Sulfide (FeS2)
mineral
Category
Igneous And Mineral
Browse igneous and mineral specimens identified by the Rock Identifier community.
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Granite
Intrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Banded Basalt
Extrusive Igneous Rock
igneous
Muscovite
Muscovite mica, KAl2(AlSi3O10)(OH)2
mineral
Olivine
(Mg,Fe)2SiO4
mineral
Magnetite
Magnetite (Fe3O4)
mineral
Chalcopyrite
CuFeS2
mineral
Unidentified dark, coarse-grained rock
Possibly diorite or gabbro; identification is uncertain from the image
igneous
Sapphire
Corundum (Al2O3)
gemstone
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Banded Sandstone (Water-worn Pebble)
Arenite with mineral banding
sedimentary
Polished dark-and-light speckled stone, likely gabbro or diorite
Likely gabbro or diorite; exact identification is uncertain from the photograph
igneous
K-feldspar (Potassium Feldspar)
Potassium Feldspar (Microcline or Orthoclase, KAlSi3O8)
mineral
K-Feldspar (Potassium Feldspar)
Orthoclase / Microcline (KAlSi3O8)
mineral
Epidote
Epidote (Ca2(Al, Fe)3(SiO4)3(OH))
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
mineral
Garnet
Garnet Group (Silicate Minerals), formula varies e.g., Alm: Fe3Al2(SiO4)3
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Porphyritic Igneous Pebble / Porphyry
Porphyritic Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Granite
Plutonic Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Granite
Intrusive Igneous Rock
igneous
Rounded quartz-rich pebble, likely milky quartz with iron-oxide inclusions
Quartz (SiO₂), possibly with minor chlorite or iron/manganese oxides
mineral
Granite
Intrusive Igneous Rock
igneous
Feldspar in Matrix
Feldspar group minerals in metamorphic or igneous matrix
igneous
Granite and Igneous Rock Collection
Intrusive igneous rock / Granitoid
igneous
Granite
Intrusive Felsic Igneous Rock
igneous
Pyrite (Fools Gold)
Iron Disulfide (FeS2)
mineral
Labradorite (Raw)
(Ca, Na)(Al, Si)4O8
mineral