Graftonite, Triphylite
Rice Quarry, Groton, Grafton County, New Hampshire, USA
8.4 x 7.4 x 3.8 cm. Graftonite is a rare iron, manganese, calcium phosphate that seldom crystallizes in euhedral crystals. This classic combination features laminar, lustrous, reddish-brown graftonite epitaxial with laminar, cornflower-blue triphylite, an uncommon lithium, iron phosphate in a quartz pegmatite matrix. Bob Whitmore regarded ...
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