Gjerdingenite-Fe Ralstonite Image
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SEM photomicrograph of gjerdingenite-Fe. The mineral is dusted with tiny crystals of two phases. At high magnification, one of them is seen to form cubes and is probably ralstonite.
Gjerdingselva, Lunner, Oppland, Oslo Region, Norway.
Crystal length 0.5 mm.
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