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Pittongite is hexagonal, space group P m2, with a 7.286(1), c 50.49(1) Å, V 2321.2 Å3, refined from synchrotron X-ray powder-diffraction data. The density of the mineral could not be measured, but Dcalc is 5.715 g/cm3. Pittongite has a cream streak, estimated Mohs hardness of 2–3, and is non-fluorescent.
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be obtained; pittongite has an average index of refraction of 2.085, and is uniaxial negative. The strongest seven lines in the X-ray ...
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Pittongite, a new secondary tungsten mineral from a wolframite deposit near ... Polyhedral representation of the structure of pittongite viewed along [110]. ...
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Order from the British Library: Pittongite, a new tungstate with a mixed-layer, pyrochlore - hexagonal tungsten bronze structure, from Victoria, Australia.
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In phyllotungstite, the (111)py blocks have the same thickness, 6 Å, whereas pittongite contains pyrochlore blocks of two different thicknesses, 6 and 12 Å. The structures can alternatively be described in terms of chemical twinning of the pyrochlore structure on (111)py oxygen planes.
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Pittongite occurs as creamy-yellow aggregates replacing ferberite in massive quartz. The crystals form thin plates in aggregates up to 2 mm in width. The mineral is formed by direct alteration of ferberite in the presence of acidic, oxidizing solutions containing sodium.
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Pittongite, a new secondary tungsten mineral from a wolframite deposit near Pittong in Victoria, southeastern Australia (A=predominantly Na) is hexagonal, ...
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The new mineral pittongite was collected from mine dumps near the main shaft of a ... Pittongite occurs as creamy-yellow aggregates replacing ferberite in ...
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Small (Bi-)W deposit mined from the 1860s to 1913, with a few dumps remaining. Wolframite- and Bi-bearing quartz reefs trending N20°E and outcropping on a low ridge of weathered Ordovician metasedimentary rocks. ... This locality information is for reference purposes only. You should never attempt to ... 27 entries listed.
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Pyrochlore Group . Pyrochlore Subgroup . Microlite-Pyrochlore Series . The niobium analogue of Microlite . The crystal structure is closely related to that of Pittongite . ... Flink (1901), Meddelelser om Grønland: 24: ... John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged: 748-756. Hogarth, D.D.
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