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Cryptomelane
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Cryptomelane (Ref: 1392119)

Montreal mine, Iron Co., Wisconsin, USA
240mm x 160mm x 75mm
$7500
This is a wonderful large example for the species. Black botryoidal cryptomelane is covering the top of this matrix. This is in super condition. As good as it can get for the species from this old locality. The specimen identification was confirmed at the A. E. Seaman Museum in Michigan. The specimen was on public display at the Tucson, 1997 show, as well as the East Coast, 2018 show.
Data last checked on 25th Jan 2025 - specimen may no longer be available

From: Weinrich Minerals
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See Also

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Witherite with Alstonite
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Acanthite
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* price is an approximate conversion and may not be accurate.

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