[{"n": "Pegmatite", "u": "/e/minerals-and-ore-deposits/pegmatite/", "s": "Coarse-grained igneous rock hosting Earth's largest crystals."}, {"n": "Pentlandite", "u": "/e/minerals-and-ore-deposits/pentlandite/", "s": "Key nickel ore found in ultramafic rocks."}, {"n": "Perovskite", "u": "/e/minerals-and-ore-deposits/perovskite/", "s": "Mineral whose structure enables diverse engineered materials."}, {"n": "Petalite", "u": "/e/minerals-and-ore-deposits/petalite/", "s": "Petalite, sometimes called castorite, is a lithium aluminum phyllosilicate mineral with the chemical formula L"}, {"n": "Phosphate mineral", "u": "/e/minerals-and-ore-deposits/phosphate-mineral/", "s": "Minerals containing phosphate anion, key to fertilizers and industry."}, {"n": "Pollucite", "u": "/e/minerals-and-ore-deposits/pollucite/", "s": "A zeolite mineral and major caesium ore."}, {"n": "Psilomelane", "u": "/e/minerals-and-ore-deposits/psilomelane/", "s": "A group of hard black manganese oxides used as ore."}, {"n": "Pyrolusite", "u": "/e/minerals-and-ore-deposits/pyrolusite/", "s": "A black manganese ore used in glassmaking, batteries, and pigments."}, {"n": "Realgar", "u": "/e/minerals-and-ore-deposits/realgar/", "s": "A historic arsenic sulfide mineral used as pigment and poison."}, {"n": "Rhodochrosite", "u": "/e/minerals-and-ore-deposits/rhodochrosite/", "s": "A rose-red manganese carbonate mineral and national gemstone of Argentina."}, {"n": "Rutile", "u": "/e/minerals-and-ore-deposits/rutile/", "s": "Common titanium dioxide mineral with high refractive index and optical uses."}, {"n": "Scheelite", "u": "/e/minerals-and-ore-deposits/scheelite/", "s": "Calcium tungstate mineral, ore of tungsten, named after Carl Wilhelm Scheele."}, {"n": "Siderite", "u": "/e/minerals-and-ore-deposits/siderite/", "s": "Carbonate iron ore with historical steel-making significance."}, {"n": "Silicate mineral", "u": "/e/minerals-and-ore-deposits/silicate-mineral/", "s": "Silicate minerals form 90% of Earth's crust."}, {"n": "Skutterudite", "u": "/e/minerals-and-ore-deposits/skutterudite/", "s": "Cobalt arsenide mineral with thermoelectric applications."}, {"n": "Smithsonite", "u": "/e/minerals-and-ore-deposits/smithsonite/", "s": "A zinc carbonate mineral named after James Smithson."}, {"n": "Sodalite", "u": "/e/minerals-and-ore-deposits/sodalite/", "s": "A blue tectosilicate mineral used as an ornamental gemstone."}, {"n": "Sperrylite", "u": "/e/minerals-and-ore-deposits/sperrylite/", "s": "Sperrylite is the most common platinum mineral, named after chemist Francis L. Sperry."}, {"n": "Sphalerite", "u": "/e/minerals-and-ore-deposits/sphalerite/", "s": "Primary zinc ore, named for its deceptive appearance."}, {"n": "Spinel group", "u": "/e/minerals-and-ore-deposits/spinel-group/", "s": "A class of cubic minerals with diverse cation substitutions."}, {"n": "Spodumene", "u": "/e/minerals-and-ore-deposits/spodumene/", "s": "A pyroxene mineral and major source of lithium."}, {"n": "Staurolite", "u": "/e/minerals-and-ore-deposits/staurolite/", "s": "A cross-shaped mineral used to gauge metamorphic conditions."}, {"n": "Stibnite", "u": "/e/minerals-and-ore-deposits/stibnite/", "s": "A sulfide mineral and key source of antimony."}, {"n": "Sulfate mineral", "u": "/e/minerals-and-ore-deposits/sulfate-mineral/", "s": "Minerals containing the sulfate ion, common in evaporites and hydrothermal settings."}, {"n": "Sulfide mineral", "u": "/e/minerals-and-ore-deposits/sulfide-mineral/", "s": "Class of minerals with sulfide or disulfide as major anion."}, {"n": "Sylvite", "u": "/e/minerals-and-ore-deposits/sylvite/", "s": "Potassium chloride mineral used as fertilizer and historically in infrared optics."}]