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Grandidierite from
Almgjotheii, Flatestøl, Lund, Rogaland, Norway

Comments:Belongs to M2 assemblage (cf. Eur. J. Mineral. , 1991, 3, pp. 367-386).
Ferroan (Fe/(Fe+Mg)= 0,50-0,67.
Habit:prisms up to 1,5 cm long & 0,5 cm across; coarse and finegrained grains
Colour:deep blue-green
Quality of samples:not specified / average specimens
Validity:Believed Valid
References:Grew, E. S. et al. (1998): Werdingite, a borosilicate new to granitic pegmatites, The Canadian Mineralogist 36, 399-414
Mineral Data:Click here to view Grandidierite data
Locality Data:Click here to view Almgjotheii, Flatestøl, Lund, Rogaland, Norway
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