Parisite-(Ce)
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Parisite is a rare mineral consisting of cerium, lanthanum and calcium fluoro-carbonate, Ca23F2. Parisite is mostly parisite-, but when neodymium is present in the structure the mineral becomes parisi
Parisite from Muzo, Vasquez-Yacopí Mining District, Boyacá Department, Colombia, size: 1.3 x 1 x .7 cm
Lanthanum
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Lanthanum is a chemical element; it has symbol La and atomic number 57. It is a soft, ductile, silvery-white metal that tarnishes slowly when exposed to air. It is the first and the prototype of the l
Carl Gustaf Mosander, the scientist who discovered lanthanum as well as terbium and erbium
LaB 6 hot cathode