Celestite
Celestine (SrSO4)
mineral
Category
Mineral Group
Browse mineral group specimens identified by the Rock Identifier community.
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Graphite
Graphite (Carbon, C)
mineral
Galena with Pyrite
Lead Sulfide (PbS) associated with Iron Sulfide (FeS2)
mineral
Chalcopyrite
CuFeS2
mineral
Hematite
Hematite (Fe2O3)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Limonite
FeO(OH)·nH2O
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Mica Schist or Muscovite
KAl2(AlSi3O10)(OH)2
metamorphic
Limonite with Gossan / Iron Ore
Hydrated iron oxide-hydroxide, approximately FeO(OH)·nH2O
mineral
Graphite
Graphite (Carbon, C)
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(F,OH)2)
mineral
Small pale mineral fragment
Unidentified; possibly quartz, calcite, or feldspar
mineral
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
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
Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Bornite
Bornite (Cu5FeS4)
mineral
Gneiss (specifically Banded Gneiss)
Gneiss
metamorphic
Granite with Mafic Xenolith
Intrusive Igneous Rock (Felsic to Intermediate)
igneous
Gneiss
Gneiss (foliated metamorphic rock)
metamorphic
Amygdaloidal Basalt with Quartz Veining
Basalt (Extrusive Igneous Rock) with Quartz (SiO2) veining
igneous
Granite
Granite (Phaneritic Quartz-Feldspar Plutonic Rock)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Banded Sandstone (Water-worn Pebble)
Arenite with mineral banding
sedimentary
Limonite pseudo-concretion (Ironstone)
Limonite (FeO(OH)·nH2O) / Goethite
sedimentary
Quartz Pebble
Quartz (Silicon Dioxide - SiO2)
mineral