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Pyrite with bubble-like growths
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Dean Allum




Joined: 27 Jan 2010
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Location: Colorado

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PostPosted: Jan 17, 2021 23:39    Post subject: Re: Pyrite with bubble-like growths  

Pete,
After reading this article, I have another theory for you to consider.

Epitaxial marcasite on pyrite from Rensselaer, Indiana -K. J. Brock; L. D. Slater
American Mineralogist (1978) 63 (1-2): 210–212

During secondary growth, perhaps the temperature/pressure went to a borderline marcasite/pyrite mode and the crystals could not figure out which to follow resulting in amorphous bimodal growth which later psuedomorphed to pyrite.

-Dean
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Roger Warin




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PostPosted: Jan 19, 2021 17:42    Post subject: Re: Pyrite with bubble-like growths  

What becomes of the crystal lattice?
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