Taylor #2 pegmatite, Brownridge Township, Kenora District, Ontario, Canada
A granite pegmatite with assimilated chlorite schist. Brand et al. (2009) described the geology and mineralogy of the occurrence of emerald in a granite pegmatite/ultramafic rock interface. The contacts were diffuse indicating mixing and assimilation. The provocative chemical analyses indicated F-dominant compositions of the tourmaline equivalent to fluor-dravite and a fluorine-dominant schorl. The fluor-dravite appears to have been restricted to the chlorite schist host, while the "schorl" occurred in the granite pegmatite. The authors also observed a nickel arsenide, which they did not further characterize. The species list for this locality includes species from the contact rocks as well as the granite pegmatite itself. The co-ordinates of the location are as they appeared in Brand et al. (2009).
27 entries listed. 23 valid minerals.
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Brand, Allison A., Groat, Lee A., Linnen, Robert L., Garland, Mary I., Btraks, Frederick W., and Giuliani, Gaston, 2009, Emerald Lake Mineralization Associated with the Mavis Lake Pegmatite Group, near Dryden, Ontario, Canadian Mineralogist, v 47, p. 315-336.
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Locality Updated: Moiry Glacier, Grimentz, Anniviers Valley, Wallis (Valais), SwitzerlandFrom Paolo Bosio, 19th Apr 2014 19:36:26