[{"n": "Agate", "u": "/e/minerals-and-crystals/agate/", "s": "Banded chalcedony gemstone, popular for millennia."}, {"n": "Albite", "u": "/e/minerals-and-crystals/albite/", "s": "Sodium endmember of the plagioclase feldspar series."}, {"n": "Allanite", "u": "/e/minerals-and-crystals/allanite/", "s": "A rare-earth-bearing sorosilicate mineral in the epidote group."}, {"n": "Alunite", "u": "/e/minerals-and-crystals/alunite/", "s": "A potassium-aluminum sulfate mineral historically mined for alum."}, {"n": "Amphibole", "u": "/e/minerals-and-crystals/amphibole/", "s": "A group of double-chain silicate minerals forming prismatic crystals."}, {"n": "Anatase", "u": "/e/minerals-and-crystals/anatase/", "s": "Metastable titanium dioxide mineral with unique crystal habit."}, {"n": "Andalusite", "u": "/e/minerals-and-crystals/andalusite/", "s": "Aluminosilicate index mineral used as a refractory and gemstone."}, {"n": "Anhydrite", "u": "/e/minerals-and-crystals/anhydrite/", "s": "Anhydrous calcium sulfate mineral found in evaporite deposits."}, {"n": "Anorthite", "u": "/e/minerals-and-crystals/anorthite/", "s": "Calcium endmember of plagioclase feldspar, rare on Earth but abundant on the Moon."}, {"n": "Apatite", "u": "/e/minerals-and-crystals/apatite/", "s": "A phosphate mineral group essential to biology and industry."}, {"n": "Aragonite", "u": "/e/minerals-and-crystals/aragonite/", "s": "A metastable calcium carbonate mineral forming in diverse environments."}, {"n": "Arsenopyrite", "u": "/e/minerals-and-crystals/arsenopyrite/", "s": "A hard, metallic ore of arsenic and gold indicator."}, {"n": "Augite", "u": "/e/minerals-and-crystals/augite/", "s": "A common pyroxene mineral with monoclinic crystals and near-90-degree cleavage."}, {"n": "Azurite", "u": "/e/minerals-and-crystals/azurite/", "s": "A deep-blue copper mineral used as pigment since antiquity."}, {"n": "Baryte", "u": "/e/minerals-and-crystals/baryte/", "s": "Baryte is the main source of barium and a key drilling mud additive."}, {"n": "Bastnäsite", "u": "/e/minerals-and-crystals/bastn-site/", "s": "A key rare-earth fluorocarbonate mineral and major cerium source."}, {"n": "Biotite", "u": "/e/minerals-and-crystals/biotite/", "s": "A common dark mica group, formerly a mineral species."}, {"n": "Bornite", "u": "/e/minerals-and-crystals/bornite/", "s": "An iridescent copper ore named for mineralogist Ignaz von Born."}, {"n": "Brookite", "u": "/e/minerals-and-crystals/brookite/", "s": "Orthorhombic titanium dioxide polymorph, rare and photocatalytic."}, {"n": "Brucite", "u": "/e/minerals-and-crystals/brucite/", "s": "Magnesium hydroxide mineral with industrial and concrete degradation roles."}, {"n": "Calcite", "u": "/e/minerals-and-crystals/calcite/", "s": "A common carbonate mineral and stable polymorph of calcium carbonate."}, {"n": "Cassiterite", "u": "/e/minerals-and-crystals/cassiterite/", "s": "Tin oxide mineral, chief tin ore since ancient times."}, {"n": "Chalcedony", "u": "/e/minerals-and-crystals/chalcedony/", "s": "A microcrystalline silica used in tools, gems, and art since prehistory."}, {"n": "Chalcopyrite", "u": "/e/minerals-and-crystals/chalcopyrite/", "s": "Most abundant copper ore mineral, used since the Bronze Age."}, {"n": "Chert", "u": "/e/minerals-and-crystals/chert/", "s": "Hard sedimentary rock composed of microcrystalline quartz, often of biological origin."}, {"n": "Chlorite group", "u": "/e/minerals-and-crystals/chlorite-group/", "s": "Green phyllosilicate minerals common in low-grade metamorphic rocks."}, {"n": "Chromite", "u": "/e/minerals-and-crystals/chromite/", "s": "Primary ore of chromium, essential for stainless steel production."}, {"n": "Chrysoberyl", "u": "/e/minerals-and-crystals/chrysoberyl/", "s": "A hard gemstone with color-change and chatoyant varieties."}, {"n": "Cobaltite", "u": "/e/minerals-and-crystals/cobaltite/", "s": "Rare cobalt arsenide sulfide, key source of strategic cobalt."}, {"n": "Coltan", "u": "/e/minerals-and-crystals/coltan/", "s": "Dull black ore essential for electronics, tied to conflict in Congo."}, {"n": "Corundum", "u": "/e/minerals-and-crystals/corundum/", "s": "A hard, crystalline mineral forming rubies and sapphires."}, {"n": "Crocoite", "u": "/e/minerals-and-crystals/crocoite/", "s": "A bright red lead chromate mineral and Tasmanian state emblem."}, {"n": "Cryolite", "u": "/e/minerals-and-crystals/cryolite/", "s": "Rare mineral used in aluminium smelting and pest control."}, {"n": "Cummingtonite", "u": "/e/minerals-and-crystals/cummingtonite/", "s": "A metamorphic amphibole intermediate in the cummingtonite-grunerite series."}, {"n": "Cuprite", "u": "/e/minerals-and-crystals/cuprite/", "s": "A minor copper ore known for its deep red color."}]