Linwood Mine, Buffalo, Scott County, Iowa
Small cabinet - 7.0 x 0.7 x 0.7 cm
5.6 grams
Specimen status: Reserved
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A thin but very straight column and
terminated of stacked, lightly iridescent marcasite
crystals. From a 2023 find. Like pyrite and pyrrhotite,
marcasite is prone to decomposition ('pyrite disease'),
during which the specimen emits sulfurous fumes and falls
apart. However this specimen is odorless and appears quite
stable.
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