Fluorite
Calcium Fluoride (CaF2)
Category
Browse sedimentary or igneous associated mineral specimens identified by the Rock Identifier community.
Fluorite
Calcium Fluoride (CaF2)
Rhodonite (in matrix)
Rhodonite (Mn,Fe,Mg,Ca)SiO3
Rhodonite
Manganese Silicate (Mn,Fe,Mg,Ca)SiO3
Cone-in-cone structure (Limestone)
Cone-in-cone structure (Secondary Sedimentary Structure)
Blue Topaz
Aluminum Silicate Fluoride Hydroxide - Al2SiO4(F,OH)2
Red Obsidian
Volcanic Glass (Amorphous SiO2)
Carnelian
Chalcedony (SiO2)
Wollastonite
Calcium Inosilicate, CaSiO3
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Jasper
Silicon dioxide (SiO2)
Yellow Sapphire (Raw)
Corundum (Al2O3)
Rough Ruby
Corundum (Al2O3 with Chromium impurities)
Banded Gneiss
Gneiss
Pyrite
Iron Sulfide (FeS2)
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
Ironstone (Limonite/Hematite)
Ferruginous sedimentary rock (Fe2O3·nH2O / Fe2O3)
Polychrome Jasper
Microcrystalline Quartz (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Lapis Lazuli
Complex silicate rock (principally Lazurite, Calcite, and Pyrite)
Tumbled Lapis Lazuli
Lapis Lazuli (Rock containing Lazurite, Calcite, and Pyrite)
Garnet-bearing gneiss
Biotite–garnet gneiss, typically quartz + feldspar + biotite + almandine garnet
Polished labradorite
Labradorite, a calcium-rich plagioclase feldspar; approximate formula (Ca,Na)(Al,Si)₄O₈
Black Tourmaline (Schorl) on Quartz
NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Sodalite
Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)
Sodalite
Na8(Al6Si6O24)Cl2
Actinolite
Ca2(Mg,Fe)5Si8O22(OH)2
Sodalite
Na8(Al6Si6O24)Cl2 (Sodium Aluminum Silicate Chloride)
Milky Quartz with Iron Inclusions
Silicon Dioxide (SiO2)
Sodalite and Calcite
Na8(Al6Si6O24)Cl2 (Sodalite) and CaCO3 (Calcite)
Arfvedsonite
Arfvedsonite [Na3(Fe2+)4Fe3+Si8O22(OH)2]
Pink Tourmaline (Rubellite)
Rb:Na(Li,Al)3Al6(BO3)3Si6O18(OH)4 (Elbaite variety)
Sodalite
Na8(Al6Si6O24)Cl2
Peridot and Citrine Gemstones (in a ring setting)
Peridot (Olivine: (Mg,Fe)2SiO4), Citrine (Quartz: SiO2)
Milky Quartz
Silicon Dioxide (SiO2)
Quartz-veined altered rock
Likely quartz-bearing metasediment or altered igneous rock; vein mineral: quartz (SiO₂)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz-bearing pegmatitic rock with feldspar
Granitic pegmatite; chiefly quartz (SiO₂), feldspar, and mica
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Rhodochrosite
Manganese Carbonate (MnCO3)
Rhodochrosite
Manganese carbonate (MnCO3)
Banded Gneiss Pebble
Gneiss (Metamorphic Rock)
Galena
Lead(II) sulfide (PbS)