Eudialyte Na15Ca6(Fe,Mn)3Zr3SiO(O,OH,H2O)3(Si3O9)2(Si9O27)2(OH,Cl)2 - 09.CO.10 (Strunz)(from Green
Eudialyte Na15Ca6(Fe,Mn)3Zr3SiO(O,OH,H2O)3(Si3O9)2(Si9O27)2(OH,Cl)2 - 09.CO.10 (Strunz)(from Greenland) Also purchased at a store in Barcelona. This is a very rare red-magenta silicate mineral that contains chlorine, sodium, calcium, cerium, iron, manganese, yttrium and zirconium. Eudialyte is a minor ore of zirconium but this use is limited by its rarity. Has a weak pleochroism and is midly radioactive. Is found associated with other alkalic igneous minerals, in addition to the some minerals common to most igneous material in general. Its name comes from a Greek root “eu dialytos” meaning “well decomposable” because its ready solubility in acid. -- source link
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