1917] Eakle: Minerals Associated with Crystalline Limestone 339 



brilliant surface, with lighter brown interiors, and they occur imbedded 



in the blue calcite in association with the wilkeite. 



The small faces grouped about the ends of the axes are often 



rounded and give readings which yield improbable symbols, but the 



ones identified are : 



c (001) p (111) y (441) 



a (010) b (221) s (131) 



m (110) i (331) i (132) 



o (011) z (121) n (154) new 



b (285)? 



The new form (154) occurs on several of the crystals; the narrow 

 face of (132) rounded into a narrow face which gives a good reflection 

 and corresponds to the symbol (285), but it is not repeated on any 

 other crystal and must be classed as doubtful. 



The measured and calculated angles are as follows : 



Measured Calculated 



Forms 



1 



P 





P 





<P 



P 



c 001 



0°00' 



0°00' 



0°00' 



0°00' 



a 010 



90 



00 







00 



90 



00 



00 



m 110 



44 



50 



89 



50 



45 



00 



90 00 



o 011 







00 



28 



20 







00 



28 15 



p 111 



44 



55 



37 



11 



45 



00 



37 14 



b 221 



44 



56 



56 



43 



45 



00 



56 40 



t 331 



45 



00 



66 



19 



45 



00 



66 19 



s 121 



26 



19 



49 



56 



26 



34 



50 14 



s 131 



18 



30 



59 



30 



18 



26 



59 32 



i 132 



18 



31 



40 



23 



18 



26 



40 22 



n 154 



11 



00 



34 



30 



11 



18 



34 25 



b 285 



14 



30 



41 



55 



14 



03 



41 34 



An analysis of the green vesuvianite by J. B. Wright gave : 



Si0 2 



36.88% 



ALA 



17.61 



FeA 



3.11 



FeO 



0.46 



MnO 



1.50 



CuO 



1.06 



CaO 



33.27 



MgO 



4.73 



Na,0 



0.34 



H 2 



0.61 





99.57 



G = 3.36 



Garnet. — The cinnamon-colored grossularite is abundant in asso- 

 ciation with the vesuvianite. Most of it is compact massive and shows 



