Paravauxite with Sigloite (very rare)

Siglo XX mine, Llallagua, Rafael Bustillo Province, Potosi Department, Bolivia (Type Locality for both species)
Small Cabinet, 9.2 x 6.7 x 5.7 cm
Start Time: 09/29/2016 6:45:00 pm (CDT)
End Time: 10/06/2016 6:45:00 pm (CDT)
Auction Closed

Item Description

These crystals are one of the most beautiful phosphates in the world. They are highly prized for their rarity and beauty. This piece hosts good quality, incredibly rare, sharp, lustrous light green crystals of Paravauxite with tan colored crystal of Sigloite on matrix. Sigloite forms as the result of alteration from Paravauxite. This specimen is from the type locality for both species! The largest crystal measures 1.2 cm. Great overall aesthetics, quality and crystal form on this one. Valued at $900. Mark Chance Bandy described Paravauxite crystals in his book "Mineralogy of Llallagua, Bolivia". He states that Paravauxite is the most abundant of all the "Vauxites" from this mine," and with that said, you almost never see specimens, especially pieces that are larger than thumbnails available on the market. This piece is a great example of the prismatic, sheaf-like parallel growths that Mr. Bandy described.

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