Satin Spar Selenite
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Category
Mineral (Extraterrestrial)
Browse mineral (extraterrestrial) specimens identified by the Rock Identifier community.
Limonite (Iron Stone/Ocher)
Limonite (FeO(OH)·nH2O)
mineral
Bronzite
MgSiO3 (Enstatite with 10-30% FeSiO3 in solid solution)
Mineral
Bauxite
Alumina ore (Mixture of Gibbsite, Boehmite, and Diaspore)
sedimentary
Lapis Lazuli (Tumbled Stone)
Na6Ca2(Al6Si6O24)(SO4,S,Cl)2 (Lazulite-rich Metamorphic Rock)
metamorphic
Basalt with Quartz/Calcite matrix
Basalt (SiO2 with Ca/Mg/Fe silicates) on a Mineral Matrix
igneous
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Blue Apatite
Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))
mineral
Quartz (River Pebble)
Silicon Dioxide (SiO2)
mineral
Blue Quartz (Aventurine)
Silicon Dioxide (SiO2) with fibrous inclusions (commonly Dumortierite)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Blue Apatite
Apatite (Ca5(PO4)3(F,Cl,OH))
mineral
Chert (Red Jasper variant)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartzite River Rock with Dendrites
Metamorphosed Quartz-rich Sandstone with Manganese Oxide (MnO2) inclusions
metamorphic
Honeycomb Calcite
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Pyrite and Quartz Agglomerate
Iron Sulfide (FeS2) with Silicon Dioxide (SiO2)
mineral
Conglomerate
Clastic Sedimentary Conglomerate (SiO2 primarily)
sedimentary
Gneiss
Gneiss (High-grade Regional Metamorphism)
metamorphic
Quartzite Pebble
Quartzite (primarily SiO2)
metamorphic
Himalayan Pink Salt (Halite)
Halite (Sodium Chloride, NaCl)
sedimentary
Basalt with vesicles (Amygdaloidal Basalt)
Amygdaloidal Basalt (predominantly Plagioclase and Pyroxene)
igneous
Amazonite
Microcline (variety Amazonite), K(AlSi3O8)
mineral
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
mineral
Sandstone (Ferruginous)
Arenite (SiO2 with Fe2O3 inclusions)
sedimentary
Basalt (Greenstone)
Basalt with chlorite/epidote (often referred to as Greenstone)
igneous
Red Sandstone
Quartz Arenite (with Iron Oxide)
sedimentary
Limestone with Quartz/Calcite Veins
Sedimentary Limestone (CaCO3 with SiO2 or CaCO3 intrusions)
sedimentary
Greenstone
Greenschist (containing chlorite, epidote, and actinolite)
metamorphic
Geode with Iron-Stained Quartz/Calcite
Silicon Dioxide (SiO2) or Calcium Carbonate (CaCO3) in Sedimentary Matrix
sedimentary
Psilomelane (Black Hematite/Manganese Ore)
Barium Manganese Oxide (Formula: BaMn9O18(OH)4)
mineral
Red Sandstone
Arenite (primarily Quartz SiO2 with Hematite Fe2O3 cement)
sedimentary
Red Sandstone
Arenite (primarily composed of SiO2 with Fe2O3 cement)
sedimentary
Marble
Recrystallized Calcite (CaCO3) or Dolomite (CaMg(CO3)2)
metamorphic
Mica (specimen appears to be Muscovite or Phlogopite)
Phyllosilicate mineral; Muscovite: KAl2(AlSi3O10)(F,OH)2
Mineral (Found in Igneous and Metamorphic rocks)
Greywacke (likely)
Greywacke (a type of sandstone)
Sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Chalcopyrite in Quartz (Gold Ore Matrix)
CuFeS2 (Chalcopyrite) with SiO2 (Quartz)
mineral
Yellow Ocher (Limonite)
Limonite (Hydrated Iron Oxide) - FeO(OH)·nH2O
mineral
Prehnite
Ca2Al(AlSi3O10)(OH)2 (Calcium Aluminum Silicate hydroxide)
mineral