Lukmanier Pass, Val Medel,Grisons; Canton Graub√ľnden, Switzerland

    Somewhere in the vicinity of the Lukmanier Pass, between the cantons of Grisons and Ticino, is the locality that spawned this enormous group of Adularia: a variety of Feldspar. The largest crystal on this specimen is twinned and measures a whopping 5.13 inches (13.1 cm) on edge. As is typical for Adularia from the area it is dusted with a light coat of dark green Chlorite: a micaceous secondary mineral. Approximately nine Adularia crystals make up the group and there is a minor amount of some non-descript matrix minerals of a tan color. Luster varies depending on inclusion level and orientation and ranges from glassy to waxy. Minor bruising to two edges on the bottom and side.
    Overall measurements: 6.5 x 7.25 x 4.5 inches (16.5 x 18.4 x 11.4 cm).

    Provenance: Western Minerals [Hoppel # D0580]

    Condition Report*:

    Condition report available upon request.

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    Auction Info

    Auction Dates
    October, 2013
    19th-20th Saturday-Sunday
    Bids + Registered Phone Bidders: 0
    Lot Tracking Activity: N/A
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