Cordierite crystals to 9.4 cm on matrix, from the Richmond Soapstone quarry, Richmond, Cheshire County, New Hampshire. Ex collection of Robert Whitmore, who found it. Photo: László Kupi.
Conway, USA - A premier New Hampshire locality for miarolitic granite, yielding smoky quartz, microcline, fluorite, topaz, and arfvedsonite crystals prized by…
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