vauquelinite


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vauquelinite

[′vōk·lə‚nīt]
(mineralogy)
Pb2Cu(CrO4)PO4(OH) A monoclinic mineral of varying color, consisting of a basic chromate-phosphate of lead and copper.
References in periodicals archive ?
Mammillary crusts of chrysocolla also underlie vauquelinite on old-time specimens.
Judging from the original description and from observations of later-recovered specimens, the associations include pseudomalachite (as blue or green nodules), some malachite, hemimorphite, white prisms of pyromorphite, ultramarine-blue microcrystalline masses of veszelyite, yellow and olive-green crusts of vauquelinite, libethenite (as acicular clusters, as small nodules with a radiating internal structure and also as equant to short prismatic crystals to 3 mm isolated on matrix), green pseudomorphs of reichenbachite after kipushite, quartz, and iron oxides.
In addition to its type locality in the Urals, vauquelinite has also been reported from a fair number of other localities, among which is Musonoi in the western Kolwezi klippe.
21, Gerdshagen, Germany 18276) had a staggering array of systematic species available, the majority from their type localities, including belyankinite, betpakdalite, mushistonite, perlialite, rasvumite, shortite, shcherbakovite, srebrodolskite, strontiopyrochlore, tadzhikite-(Ce), vauquelinite, vitusite-(Ce), and yuksporite.
1967) and vauquelinite (Fanfani and Zanazzi, 1968) have shown that, although the packing of the atoms in the structures of the two minerals is essentially identical, there are differences in the coordination of the atoms around Pb, and in the arrangement of symmetry elements (Fanfani and Zanazzi, 1968).
1968) The crystal structure of vauquelinite and the relationships to fornacite.