Sandstone with Magnetite and Iron Staining
Clastic Sedimentary Rock (contains Fe3O4 and Limonite/Hematite)
Category
Browse mineral (processed metal) specimens identified by the Rock Identifier community.
Sandstone with Magnetite and Iron Staining
Clastic Sedimentary Rock (contains Fe3O4 and Limonite/Hematite)
Sunstone
Oligoclase or Andesine (Plagioclase Feldspar) - (Ca, Na)((Al, Si)2Si2O8)
Gold-bearing Quartz with Iron Oxides
Quartz (SiO2) with Limonite/Goethite (FeO(OH)) and Pyrite (FeS2)
Chondrite Meteorite
Ordinary Chondrite (S-type Asteroid fragment)
Sunstone (Heliolite)
Plagioclase Feldspar ((Ca,Na)(Al,Si)4O8)
Black Sapphire (Basaltic Blue Sapphire)
Corundum (Al2O3)
Dendrite (Manganese Oxide Dendrites)
Psilomelane or Pyrolusite on Matrix (typically MnO2)
Botryoidal Hematite (Iron Ore)
Iron(III) oxide (Fe2O3)
Muscovite Mica in Quartz Matrix
Muscovite (KAl2(AlSi3O10)(OH)2) in Quartz (SiO2)
Bornite
Bornite (Cu5FeS4)
Bornite
Bornite (Cu5FeS4)
Peacock Ore
Bornite (Cu5FeS4)
Basalt with Iron Oxidation
Mafic Igneous Rock (Basalt)
Peacock Ore
Bornite (Cu5FeS4) or iridescent Chalcopyrite (CuFeS2)
Schist
Mica Schist (primarily Muscovite [KAl2(AlSi3O10)(OH)2] or Biotite)
Green Fluorite
Calcium Fluoride (CaF2)
Fluorite
Calcium Fluoride (CaF2)
Fluorite
Calcium Fluoride (CaF2)
Fluorite (Rainbow Fluorite)
Calcium Fluoride (CaF2)
Fluorite (Rainbow or Multi-colored Fluorite)
Fluorite (Calcium Fluoride - CaF2)
Moss Agate
Silicon Dioxide (SiO2) with inclusions of manganese or iron oxides
Fluorite (likely Green Fluorite variant)
Calcium Fluoride (CaF2)
Fluorite
Fluorite (Calcium Fluoride - CaF2)
Black Jasper
Black Jasper (Silicate mineral - SiO2)
Ferruginous Conglomerate (or Iron-Rich Concrete/Slag)
Clastic Sedimentary (Silicon Dioxide/Iron Oxide matrix)
Basalt with Calcite Veins
Basalt (containing CaCO3 inclusions)
Lapis Lazuli
Lapis Lazuli (Complex aggregate mainly of Lazurite: (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)
Gold Sheen Obsidian
Volcanic Glass (SiO2 + Fe3O4 / Gas Inclusions)
Smoky Quartz and Biotite Schist
Quartz-Biotite Schist (SiO2 + K(Mg,Fe)3AlSi3O10(F,OH)2)
Garnet Schist
Almandine Garnet in Mica Schist (Fe3Al2(SiO4)3)
Chondrite Meteorite Fragment
Ordinary Chondrite (L or H type)
Schist
Mica Schist
Schist
Mica Schist
Ironstone Concretion (Limonite/Goethite)
Ironstone (primarily FeO(OH)·nH2O)
Mica Schist
Mica Schist (primarily Muscovite or Biotite KAl2(AlSi3O10)(OH)2)
Green Aventurine
Aventurine Quartz (SiO2 with inclusions of Fuchsite)
Labradorite
Labradorite (Plagioclase Feldspar Series) - (Ca, Na)(Al, Si)4O8
Green Aventurine
Quartz variety (SiO2 with inclusions)
Pink Fluorite
Fluorite (Calcium Fluoride) - CaF2
Labradorite
Feldspar (Plagioclase Series), (Ca,Na)(Al,Si)4O8
Amazonite
K(AlSi3O8), Microcline (potassium feldspar)
Labradorite
Labradorite ((Ca,Na)(Al,Si)4O8)