A continuous coating of Carbonate-rich Fluorapatite, formerly named Francolite, from Fowey Consols at Tywardreath in the St. Austell District of Cornwall, England. Fowey Consols lies between Lostwithiel and St. Blazey, to the north east of St. Austell. The Fluorapatite forms as an uninterrupted crystalline druse of translucent cream to smoky grey crystals with a resinous to glassy lustre over a 1 mm thick crust of dull gold, micro-crystallised Pyrite. The underlying matrix is a mixture of milky white Quartz veinstone and Killas. Killas was the old Cornish miners’ term for metamorphosed sedimentary rocks, now known to have occurred during the Variscan orogeny and a term still in use by geologists. This small cabinet specimen comes with a John Jones label dated July 1974.
