Ettringite on Oyelite

N'Chwaning Mines, Kalahari manganese fields, South Africa
Cabinet, 12.7 x 12.7 x 5.4 cm
Start Time: 01/11/2013 12:00:00 am (CST)
End Time: 01/17/2013 6:30:00 pm (CST)
Auction Closed

Item Description

A fine and aesthetic larger matrix ettringite specimen from this find. A 3.2 cm tall cluster of soft, lemon-yellow color, translucent, completely formed and free of damage is jauntily set on the edge of the piece. They have an unusual shimmering surface sheen, very attractive. The matrix is a manganese-rich ore completely covered on the front by a blanket of glassy oyelite blades. It is covered on the backside with smooth bubby oyelite. This combination overall is vastly different from anything else I have seen for the species, and quite unusual in any case. Bruising is noted to the oyelite on the front and is a modest detraction. This remains a dramatic, large example of the find and combination species.

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