The Sterling Mine is the co-type locality for franklinite. While there are now many other “localities” for franklinite, only the Sterling and Frankin Mines (together with several named openings into the same ore-bodies) have produced any significant specimens. The mineral is extremely common here – it was one of the main ores – but crystals are not. Moreover, many “crystals” are just rounded blobs, and the mineral is extremely brittle. Sharp, undamaged crystals – even micros – are hard to come by. The crystal on this specimen is quite sharp, fairly large (ca 1.6 cm tip-to-tip) and essentially undamaged, though not absolutely perfect. There is a small gap between the crystal and the matrix on one side, possibly indicating that it has been glued back in the cast after popping loose. (See the side view photo.)

Single item shipping weight (with TN case) is 3.9 oz (111 g). For shipments outside the USA, up to a total weight < 8 oz (225g), this can be combined with items from this or other auctions for the same postage.

Within the USA, postage for total weights up to 13 oz ranges from $4.25 to $6.50 (including packing etc) regardless of destination. Above 13 oz, I will use “own box” Priority Mail. The rate, including packing, varies by destination from $7.25 to $9.50.

See my updated “Shipping Policy” for details.