Phosphophyllite, whose cumbersome name means "phosphate leaf" in allusion to both its chemistry and cleavage, is a rare zinc and manganese mineral that is found at only a few localities. It can be most appreciated when cut into gemstones that possess a good blue-green color. Gemmy phosphophyllite comes from its Bolivian locality where it formed as a primary precipitate in tin rich hydrothermal veins. In Germany and in New Hampshire, it is found as an alteration product of primary phosphates such as triphylite.
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