Pyrite/Marcasite, Michigan - Item # MSPYM-031 - SOLD!

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Very cool little pyrite crystals with a marcasite blade from the M-69 Roadcut, near Felch, Mi.  The matrix is dolomitic marble and seems to be counteracting the suplhuric breakdown of these piece making it pretty stable.  The brown coating on some of the crystals is goethite.
Approximate size (mm): 41x37x21 
Weight: 38.3 grams
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