Cyanotrichite with Brochantite (classic material) (ex Bob Reynolds Collection)

Grandview Mine, Grand Canyon, Coconino County, Arizona, USA
Small Cabinet, 7.3 x 7.2 x 4.3 cm
Start Time: 09/30/2021 8:00:00 pm (CDT)
End Time: 10/07/2021 6:55:00 pm (CDT)
Auction Closed
Winning Bid: $210

Item Description

A wonderful small cabinet specimen of one of the most beautiful mineral species out there! Cyanotrichite is a copper aluminum sulfate and well-crystallized specimens like this one are few and far between. It was found in the mid 1960's in the Grandview mine, which existed in the Grand Canyon. The mine is long defunct, but when specimens were being recovered, they were some of the most incredible, and brightly colored specimens from Arizona, or anywhere else for that matter. This specimen is filled with dozens of excellent, electric blue color, acicular (needle-like) radiating aggregates or "sprays" of Cyanotrichite with brilliant emerald green Brochantite and powder blue Chalcoalumite on matrix. The needles of Cyanotrichite are very delicate, but are equally stunning to view. You can see that we've provided some great micro photos of what these crystals look like up close. Please note that there have been almost NO specimens from this locality available on the market for a very long time. This is a very rare opportunity to own a unique and attractive species from one of the more interesting localities in the United States. From the collection of Robert (Bob) Reynolds. Bob was a well-known fossil and mineral expert and former Curator of Earth Sciences at the San Bernardino County Museum in California. The rare phyllomanganate-chromate species Reynoldsite was named in his honor in 2011.

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Bidding History

Bid Amount Bid Time
$210 10/07/2021 6:49:38 pm (CDT)
$200 10/07/2021 6:45:54 pm (CDT)
$190 10/07/2021 6:42:50 pm (CDT)
$180 10/07/2021 6:30:54 pm (CDT)
$170 10/07/2021 6:26:18 pm (CDT)
$160 10/07/2021 4:38:54 pm (CDT)
$155 10/07/2021 4:38:54 pm (CDT)
$150 10/07/2021 4:38:48 pm (CDT)
$140 10/07/2021 4:38:48 pm (CDT)
$130 10/07/2021 4:38:44 pm (CDT)
$120 10/07/2021 4:38:44 pm (CDT)
$110 10/03/2021 10:32:28 pm (CDT)
$100 10/03/2021 10:32:28 pm (CDT)
$15 10/03/2021 11:01:20 am (CDT)
$10 10/02/2021 9:54:15 pm (CDT)