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40 6 S Y N O P S E Si n t h e O t a g o s c h is t s o f N e w Z e a l a n d ( T u r n er ,I 9 3 3 ) ; l i k e m a n y s i m i l a r A l p i n e s c h i s t s t h e y a l s oc o n t a i n t s c h e r m a k i t i c h o r n b l e n d e s . T h e W a r s a kt u f ts c o u l d h a v e f o r m e d o r i g i n a l l y , t o g e t h e r w i t ht h e m e t a - i g n e o u s r o c k s , p o s s i b l y a s l a v a s , i n a ni n t e r - p l a t e t e c t o n i c e n v i r o n m e n t ; t h e h i g h A 1 c o n -t e n t o f t h e h o r n b l e n d e , w h i c h i s t y p i c al o f m a n ya m p h i b o l e s f ro m t h e s u r r o u n d i n g a l p i n e e n v i r o n -m e n t i n N o r t h - W e s t P a k i s t a n , a n d o t h e r m i n e r a -l o g i c a l e v i d e n c e in t h e r e g i o n s u p p o r t a h i g h -p r e s s u re e n v i r o n m e n t f o r th e m e t a m o r p h i s m o f th er o c k s t o j u s t w i t h i n t h e a m p h i b o l i t e f a c i e s , a tm o d e r a t e t e m p e r a t u r e s o f a p p r o x i m a t e l y 4 6 5 ~

R E F E R E N C E SAh mad (M.) , Ali (K. S. S. ) , Kh an (B.) , Shah (M. A .), andUllah (I . ) , I969. Ge ol. Bull . U niv. Peshawar, 4, 44-78.Tu rne r (F. J.), 1933.Trans. New Zealand Inst . 63, I78-236.

[Manuscript received 2I Apr il I978 ]

Full text in the M iniprint section, pp. M33-6.

Copyright the Mineralogical Society

M I N E R A L O G I C A L M A G A Z I N E , S E P T E M B E R 1 9 7 8 , V O L . 4 2 , P . 4 0 6

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i n fi n e - l a y e r e d r o c k s ; t h o s e f o u n d a t G a n g i n e n i a r em a g n e t i c a n d a r e a s s o c i a t e d w i t h b r o n z i t e( En 77 _8 5), t h o s e f r o m t h e B i n n y a n d L o y a m i n e sa r e n o n - m a g n e t i c a n d a s s o c i a t e d w i t h e n s t a t i t e( E n s s - 9 5 ) .C h e m i c a l a n a l y s e s a n d X - r a y p o w d e r d a t a a r eg i v e n f o r f i v e s p e c i m e n s , in c l u d i n g b o t h t y p e s . T h em a g n e t i c s u s c e p t i b i l i t y a p p e a r s t o i n c r e a s e w i t hi n c r e a s i n g F e 3 + . T h e u n i t - c e ll s i z e i s n e g a t i v e l yc o r r e l a t e d w i t h C r 3 +, A 13 a n d M g ~ a n d p o s i -t i v e l y w i t h F e z + a n d F e 3 + .Full text in the M iniprint section, pp. M38-9.~) Copyright the Mineralogical Society

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