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Description

Autunite
Assunção Mine, Aldeia Nova, Ferreira de Aves, Sátão, Viseu, Portugal
13 x 10 x 9 cm (5.12 x 3.94 x 3.54 in)

Minerals that contain the element of uranium just have that shockingly electric color to them. This Autunite has a rich chartreuse color with fine thin blades stacked together to form bowtie style structures. It is so thick and prolific in certain areas that it almost has a rough rosette form. Sitting on a matrix of contrasting massive white Quartz, the gorgeous Autunite's intense coloration has a dramatic visual impact along with a wonderful textural composition. This piece comes with a custom acrylic base.

From the collection of Daniel "Dan" R. Kennedy.


More Information: The piece is in excellent condition. This is a uranium-bearing mineral that exhibits moderate natural radioactivity. It should be handled with care. Avoid ingestion, wash hands after handling, and store in a sealed container to minimize the spread of particulate material.


Condition Report*: Condition report available upon request.
*Heritage Auctions strives to provide as much information as possible but encourages in-person inspection by bidders. Statements regarding the condition of objects are only for general guidance and should not be relied upon as complete statements of fact, and do not constitute a representation, warranty or assumption of liability by Heritage. Some condition issues may not be noted in the condition report but are apparent in the provided photos which are considered part of the condition report. Please note that we do not de-frame lots estimated at $1,000 or less and may not be able to provide additional details for lots valued under $500. Heritage does not guarantee the condition of frames and shall not be liable for any damage/scratches to frames, glass/acrylic coverings, original boxes, display accessories, or art that has slipped in frames. All lots are sold "AS IS" under the Terms & Conditions of Auction.

Auction Info

Proxy Bidding Ends 
October
8th Wednesday 11:50 am CT
Auction Dates
October
8th Wednesday
Proxy Bidding Time Remaining 
16 Days 22h 14m 51s
Bids + Registered Phone Bidders: 0
Lot Tracking Activity: 9
Page Views: 107

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25% of the successful bid (minimum $49) per lot.

This lot is in: 1 - Signature® Floor Session (Live Floor, Live Phone, Mail, Fax, Internet, and Heritage Live):
(Lots 72001-72207) - 12:00 PM Central Time, Wednesday, October 8, 2025.
[Proxy bidding ends ten minutes prior to the session start time. Live Proxy bidding on Heritage Live now starts within 2 hours of when the auction opens for proxy bidding and continues through the live session.]

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Heritage Auctions
2801 W. Airport Freeway
Dallas, TX 75261

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Starting Bid:
$455
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