Gmelinite, Chabazite-Ca

7.6 x 5.7 x 4.6 cm. This is a dramatic cluster of large gmelinite crystals featuring a giant 3 cm crystal in the middle, all of which have replaced chabazite. The lustre is unusually good on this piece, almost glassy and therefore far better than on others I have seen in the past. This is new material collected recently from this classic old locality that is difficult to access, by my friend Rod Tyson (a semi-retired mineral dealer and well-known Canadian field collector). This is a significant piece, from what I have seen in the past and also in context of this new find, for overall size and quality.


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Photo added: 3rd Mar 2008