Plate 4 



Figure I Green oolite resulting from the alteration of oolitic ore. 

 centric structure evident. Magnified 30 diameters 



Con- 





. 



feil-': 1 



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if ^ 



■ ■ 



ii§i 



gl ' 'v- 



Spy*! f^rfwM 





4 



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El 



i; : " %■ 





; QSj?H 



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p 





19 Br 



< 1 







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Figure 2 Green oolite resulting from alteration of oolitic ore. 

 structure evident. Magnified 30 diameters 



Concentric 



