Cyanotrichite with Chalcoalumite and Brochantite (classic material)

Grandview Mine, Grand Canyon, Coconino Co., Arizona, USA
Ex. Bob Reynolds
Miniature, 4.2 x 3.2 x 1.7 cm
Start Time: 12/15/2022 7:00:00 pm (CST)
End Time: 12/22/2022 6:45:00 pm (CST)
Auction Closed
Winning Bid: $235

Item Description

Here we have a great old classics from a now extinct mine that existed inside of the Grand Canyon in Arizona. The piece features beautiful acicular crystals of vibrant blue Cyanotrichite, which is rare a copper aluminum sulfate. Well-crystallized specimens like this one are few and far between on the market today. It was found in the mid 1960's in the Grandview mine, which existed in the Grand Canyon. This specimen is filled with dozens of excellent, electric blue color, acicular (needle-like) radiating aggregates or "sprays" of Cyanotrichite with minor emerald green Brochantite and powder blue Chalcoalumite on matrix. The needles of Cyanotrichite are very delicate, but they 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
$235 12/22/2022 10:23:25 am (CST)
$225 * 12/22/2022 10:23:04 am (CST)
$225 * 12/22/2022 10:23:04 am (CST)
$185 12/22/2022 10:22:49 am (CST)
$175 12/22/2022 10:22:49 am (CST)
$160 12/22/2022 10:22:26 am (CST)
$150 12/22/2022 10:22:26 am (CST)
$115 12/21/2022 10:02:57 am (CST)
$105 12/21/2022 10:02:57 am (CST)
$95 12/21/2022 10:02:13 am (CST)
$85 12/21/2022 10:02:13 am (CST)
$75 12/21/2022 8:40:32 am (CST)
$65 12/19/2022 12:57:02 am (CST)
$55 12/18/2022 2:11:06 pm (CST)
$51 12/18/2022 2:11:06 pm (CST)
$41 12/17/2022 6:58:02 pm (CST)
$36 12/17/2022 6:58:02 pm (CST)
$10 12/17/2022 6:46:20 pm (CST)
* Proxy Bid Battle: In the event of two customers inputting matching proxy bids, the leading bid goes to the earliest of the two proxy bids. Tie winners are shown in bold.