Trigonal and cubic Fe2Si polymorphs (hapkeite) in the eight kilograms find of natural iron silicide from Grabenstätt (Chiemgau, Southeast Germany
Frank Bauer, Michael Hiltl, Michael A. Rappenglück, Kord Ernstson
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Barbara Rappenglück, Michael Hiltl, Kord Ernstson
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Jens Poßekel, Kord Ernstson