Vauxite with Wavellite, Paravauxite, Sigloite and Pyrite (new find) (rare association!)

Siglo XX mine, Llallagua, Bustillo Province, Potosi Department, Bolivia (type locality for three species)
Miniature, 5.0 x 2.3 x 1.7 cm
Start Time: 05/05/2011 6:45:00 pm (CDT)
End Time: 05/12/2011 6:45:00 pm (CDT)
Auction Closed

Item Description

This piece is an attactive, very well crystallized, ridiculously rare, specimen consisting of small, bladed, beautiful blue color, radiating aggregates of Vauxite which are associated with greenish-white blades of Paravauxite, tan colored Sigloite, and beige colored, small botryoidal groups of Wavellite. The most important aspect of the piece is the fact that there are cubic Pyrite crystals present! This association is very rare from Siglo XX, and the piece would certainly make a great addition to any Bolivian suite I have photographed the crystals under the microscope to show that they are truly terminated crystals and not just a mass. It is very difficult to obtain any specimens of this incredibly beautiful phosphate and to find Vauxite on Pyrite is fantastic. This piece is from the type locality for Vauxite which was originally discovered along the Contacto and San Jose veins in this mine and first described by Sam Gordon and Mark Bandy. It is so unbelievably rare to find good sized, beautifully crystallized specimens of Vauxite on Pyrite from Bolivia like this one. The Siglo XX mine is the type locality for Vauxite, Paravauxite and Sigloite.

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