Meddelelser om Grønland . in fig. p- oni Fig. 5. Erikite. Between these two forms numerous transitional forms arefound, and the mentioned supervening faces are distributed inseveral different ways, sometimes they may also all be foundin one crystal. XXVI. - 98 The faces figured in fig. 6, are those occurring most rarelyof all, viz. s {201}, and ?<{ll4}; each of them has only beenobserved in a couple of crystals, in one case they were bothfound in one crystal ; they are always rather small and incon-spicuous.

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Keywords: ., bookcentury1800, bookdecade1870, booksubjectgeology, booksubjects