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fluorite; purple cubic crystals on dark limestone with abundant *Dibunophyllum*?, partially replaced by brown sphalerite

Frazer's Hush Mine, Rookhope, Weardale, Co. Durham, England from the first large cavity on the 340 level, west side, Greencleugh Vein Viewed from one side, a fine mineral specimen, and from the other, a fine rock and fossil specimen. Despite replacement by sphalerite, the fossil corals preserve very fine detail.