Two unusual specimens of nsutite showing preferred orientation were examined. x-ray powder data for massive nsutite and x-ray patterns of the “oriented” specimens are correlated. A hexagonal unit cell, c = 4.43 Å and a = 9.65 Å, accounts for the x-ray observations and agrees with the parallel extinction noted optically. X-ray diffraction analyses of thermal transformation products of one of the “oriented” specimens are also included.

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