Abstract
This New Mineral Names has entries for 16 new minerals, including backite, bluestreakite, carducciite, chrysothallite, eckerite, emmerichite, ferribushmakinite, ferro-ferri-nyboite, galloplumbogummite, hlousěkite, hydroxylwagnerite, ishiharaite, mellizinkalite, peterandresenite, popovite, and yurmarinite. # Backite* {#article-title-2} K.T. Tait, V. Dicecco, N.A. Ball, F.C. Hawthorne, and A.R. Kampf (2014) Backite, Pb2Al(TeO6)Cl, a new tellurate mineral from the Grand Central Mine, Tombstone Hills, Cochise County, Arizona: Description and crystal structure. Canadian Mineralogist, 52(6), 935–942. Backite (IMA 2013-113), ideally Pb2Al(TeO6)Cl, is a new tellurate mineral discovered at the Grand Central mine located ¾ mile south of Tombstone, Arizona, U.S.A. Oxidized Ag- and Au-bearing galena and minor copper and zinc ores occur in faulted and fractured parts of a dike, and in brecciated footwall zones of the dike. Backite forms dark to pale blue-gray rosettes up to 0.15 mm consisting of hexagonal plates up to 0.08 mm exhibiting the forms {100}, {010}, and {001}. The rosettes are perched on microcrystalline quartz and associated with schieffelinite, oboyerite, rodalquilarite, cerussite, jarosite, and a new Pb-Cu tellurate-sulfate. Backite is moderately transparent with opacity increasing with intensity of color, has a very pale bluish-gray streak and adamantine luster. It has a perfect micaceous cleavage on {001}, is brittle with a splintery fracture and has a Mohs hardness of ~2–3. The density was not measured due to the lack of material; D calc = 5.573 g/cm3. The mineral does not fluoresce under UV light. Backite is optically uniaxial (−). The indices of refraction are greater than 1.80. Available liquids with higher refraction were reacting with the mineral; n calc = 1.878. Backite is pleochroic with O = …
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