Triphylite from Palermo Mine, Groton, New Hampshire, USA

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Rich masses of graftonite with little matrix. Good example for the species.The Palermo Mine in Grafton County, New Hampshire, is hosted within a complex granitic pegmatite body that intruded surrounding metamorphic rocks, renowned for its zoned structure and exceptional concentration of rare phosphate species. Commercial operations began in the mid-19th century, extracting sheet mica, feldspar, and beryl through intermittent underground and open-cut methods over roughly a century. Today, the site is world-famous among mineral collectors and researchers for yielding numerous type-locality minerals, including phosphate-rich masses like graftonite, which frequently occurs in association with secondary alteration pods and complex pegmatite assemblages.