MINERALOGICAL NOTES — ANDERSON. 



131 



The elements were calculated from the following angles, all 

 the reflections being sharp : — 



The elements deduced are compared below with those given 

 by Goldschmidt in his Winkeltabellen : — 



The elements for Dana's position were also calculated for com- 

 parison with FlinkV as corrected by Dana, and Pirsson's for the 

 fowlerite variety 5 : — 



Comparison of these elements suggests a morphotropic relation- 

 ship, and it is very desirable that the exact composition of 

 Broken Hill rhodonite should be ascertained; at present, however, 

 a sufficient quantity of suitable material is not available. 



A brief description of the individual specimens follows 

 (lettering according to Goldschmidt). 



4 Flink— Zeits. Kryst., xi., 1SS6, p. 506. 



5 Pirsson — Amer. Journ. Sci., xl., 1890, p. 484. 



