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Hematite on Psilomelane
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Hematite on Psilomelane (Ref: 1392175)

Montreal mine, Iron Co., Wisconsin, USA
155mm x 120mm x 90mm
$9000
A grouping of thick stalactites of what is termed psilomelane, I think possibly cryptomelane, these covered with hematite. In super condition. This is a unique one-of-a-kind piece from this famous old locality. Really outstanding. The specimen comes with a previous collection label from Harry Roberson as shown at the end of the video. The specimen was figured in The Mineralogical Record, January, February, 2024 issue, page 98, figure 31. This was on public display at the Tucson, 2017 and Denver, 2023 shows.
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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Parisite
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Smithsonite
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Rhodochrosite with Fluorite
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Witherite (nickle-rich) and Alstonite
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Tourmaline
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Pyrite on Pyrite ps. Baculites yokayamai
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Mimetite
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Neptunite on Natrolite with Benitoite
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Djurleite and Chalcopyrite
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Benitoite on Natrolite
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Magnetite
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From: Weinrich Minerals
Cryptomelane
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Calcite with Manganite
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* price is an approximate conversion and may not be accurate.

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