Dr. Nagy I. Zoltán szerk.: Fragmenta Mineralogica Et Palaentologica 4. 1973. (Budapest, 1973)

I. = (010) plane of the complex containing the twin members A and B n

1 = 64° h

z = 18° II. = the (010) cleavage and composition plane of the complex containing the twin member C. n

II = 195

° h

II = 17

° Mj = - 0.85480 i + 0 +0.41692 £ + 0.30902 k -II = + 0.24751 i 0 - 0.92372 l + 0.29237 k Pig. 6. Twin member A: n

a = 290' h

a = 18.5' a, - + 0.89113 1 + O.32434 j + 0.31730 k ~

A

o ~ n

b = 194' h

b = 18' b, = + O.23OO8 i - 0.92281 1 + O.30902 k _A

o *A X

â

A 0 o = - O.39304 i + 0.20238 £ + 0.89696 k Twin member C: n

b = 194

1 h

b = 17.5° = + 0.23072 i - O.92539 i + 0.30071 k n

c = 285< h

c « 3

( - + O.9646I i + 0.25847 £ + O.O5234 k b

c X £ o o = - 0.12615 i + 0.27799 £ + 0.95227 k Twin member D: n

a = 328' h

a = 18.5'