Lengenbachite on Tennantite (Univ. of Bern, and Wein Coll.)

Lengenbach Quarry, Im Feld, Binn Valley, Wallis, Switzerland
Small Cabinet, 8.5 x 8.4 x 7.0 cm
Start Time: 11/11/2009 6:30:00 pm (CST)
End Time: 11/19/2009 6:38:40 pm (CST)
Auction Closed

Item Description

Lengenbachite is one of the rarest of the macrocrystalline oddities from this amazing locality. Binnite is the multi-faceted, rounded variety of tennantite, as it was known from the famed Lengenbach deposit of Switzerland. This is a most unusual tennantite specimen, in that the 1.0 cm binnite crystal is coated with nubby, iridescent, marcasite, giving it a sheen. Two, Lengenbachite plates at the base of this strange looking crystal are a nice compliment and they species really accent each other. For freestanding Lengenbachite, these are pretty good, actually - and nicely protected in the crevasse, as well. The binnite and Lengenbachite cluster is adroitly set in a cleft atop a block of sugary, banded dolomite. The marcasite on the tennantite makes for a rarely encountered and most interesting looking Lengenbach combination specimen! Ex University of Bern, and Rolf Wein Collections. Valued $750

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