Minerals And Gems 1-23
22 entries in the Minerals And Gems compendium.
Iceland sparTransparent calcite used to demonstrate light polarization.IlmenitePrimary ore of titanium and source of white pigment.JarositeA sulfate mineral linking Earth's geology to Mars exploration.KainiteAn evaporite mineral first found in Stassfurt salt mines.KerniteHydrated sodium borate mineral used to produce borax.KyaniteA blue aluminosilicate mineral indicating high-pressure metamorphism.LabradoriteA feldspar mineral known for its iridescent labradorescence.LazuriteDeep-blue feldspathoid mineral, key component of lapis lazuli.LepidoliteA lithium-rich mica and primary source of rubidium.LimoniteLimonite is an iron ore consisting of a mixture of hydrated iron(III) oxide-hydroxides in MagnesiteMagnesite is a magnesium carbonate mineral used in refractories and carbon sequestration.MagnetiteMost magnetic naturally occurring mineral, key to paleomagnetism and compasses.MicroclineA potassium-rich feldspar with distinctive twinning and atmospheric ice-nucleating propertMonaziteA phosphate mineral group and ore for rare-earth elements.MuscoviteCommon mica with perfect cleavage, used historically as window glass.Native copperNative copper is a natural mineral of uncombined copper.OchreNatural clay pigment used for art, ritual, and medicine since prehistory.OlivineA common mantle mineral that drives plate tectonics and weathers rapidly.OoliteSedimentary rock formed from spherical ooid grains.OrpimentA toxic golden-yellow arsenic sulfide mineral used historically as a pigment.OrthoclaseA key feldspar mineral forming igneous rocks and gemstones.PainiteRare borate mineral named after its discoverer, Arthur C.D. Pain.
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