Granite Pebble
Phaneritic intrusive igneous rock
igneous
Category
Mineral Composite
Browse mineral composite specimens identified by the Rock Identifier community.
Learn about Mineral Composite in the encyclopedia
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Lapis Lazuli
Lazurite-rich metamorphic rock
metamorphic
Lapis Lazuli
Na8(Al6Si6O24)S2 (Lazurite is the primary constituent mineral)
metamorphic
Quartz Vein in Hematitic Siltstone
Hydrothermal Quartz (SiO2) in Ferriferous Matrix
metamorphic
Native Copper
Copper (Cu)
mineral
Yellow Ochre / Limonite
Hydrated ferric oxide (FeO(OH)·nH2O)
mineral
Greenschist
Chlorite Schist (Greenschist Facies)
metamorphic
Sandstone
Sedimentary Rock (Quartz arenite/Arkose)
sedimentary
Copper Ore
Cupriferous Rock / Mixed Mineral Matrix
igneous
Calcite (commonly referred to as Orange Calcite or Honey Calcite given its color)
Calcite
Mineral
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Fluorite (Rainbow, Purple-Blue Tumbled)
Calcium Fluoride (CaF2)
Mineral
Quartz (Clear Quartz/Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Sandstone and Conglomerate pebbles
Sedimentary clastic rock
sedimentary
Mica Schist
Schist
metamorphic
Schist
Schist
Metamorphic
Copper Ore / Altered Granodiorite
Cupriferous rock with silicate gangue
mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Malachite-bearing Rock
Cu2CO3(OH)2
mineral
Graphite
Carbon (C)
mineral
Galena
Lead Sulfide (PbS)
mineral
Muscovite Mica
KAl2(AlSi3O10)(OH)2
mineral
Chrysotile Asbestos
Chrysotile (Mg3Si2O5(OH)4)
mineral
Epidote
Epidote (Ca2(Al, Fe)3(SiO4)3(OH))
mineral
Muscovite Mica
KAl2(AlSi3O10)(OH)2
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Epidote
Epidote (Ca2(Al, Fe)3(SiO4)3(OH))
mineral
K-Feldspar (Potassium Feldspar)
Orthoclase / Microcline (KAlSi3O8)
mineral
Microcline Feldspar
KAlSi3O8
mineral
Graphite
Graphite (Carbon, C)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Limonite
FeO(OH)·nH2O
mineral
Limonite
FeO(OH)·nH2O (Hydrated iron oxide-hydroxide)
mineral
Muscovite
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Lapis Lazuli
Lapis Lazuli (Complex silicate rock containing Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
metamorphic
Bauxite
Bauxite (Al(OH)3 mixed with Fe2O3 and clay minerals)
sedimentary
Sandstone with Secondary Mineral Encrustation
Arenite with Silica/Calcite deposits (SiO2 or CaCO3)
sedimentary
Specular Hematite
Hematite (Fe2O3)
mineral
Ironstone / Hematite
Iron(III) oxide (Fe2O3)
mineral
Celestite
Celestine (SrSO4)
mineral
Graphite
Graphite (Carbon, C)
mineral