Kiddcreekite, a copper-tin-tungsten sulfide, is a new mineral species that occurs as irregular grains in a bornite-rich ore zone of the Kidd Creek Mine, Timmins, Ontario and in the Campbell orebody, Bisbee, Arizona. The mineral has the ideal formula Cu 6 SnWS 8 and is thus the tungsten analog of hemusite Cu 6 SnMoS 8 . Kiddcreekite is opaque and optically isotropic in reflected light. In reflected plane-polarized light, the Kidd Creek grains are pale gray-brown, and the Bisbee grains are pale gray. Some grains display a purplish tint. The refined unit-cell parameter is a 10.856(2) Aa, V = 1279.4 Aa 3 . With Z = 4, the calculated density for stoichiometric Cu 6 SnWS 8 is 4.88 g/cm 3 . The strongest five lines in the X-ray-powder pattern [d in Aa (I) (hkl)] are: 6.29(100)(111), 1.919(60)(440), 3.138(50)(222), 5.41(30)(200), 3.270(30)(311). Indexing indicates a cubic F-lattice with aspect F***. The Vickers microhardness of a Bisbee grain gave VHN 100 = 183.--Modified journal abstract.

This content is PDF only. Please click on the PDF icon to access.

First Page Preview

First page PDF preview
You do not currently have access to this article.