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MANGANESE DEPOSITS OF INDIA : MINERALOGY. [PaRT I 
pale bluish. On testing it is found that both minerals react for man- 
ganese, the garnet very strongly, and the pyroxene distinctly, but not 
strongly. It seems probable that both this and the case mentioned by 
Mallet are oceuirences of calderite. From its colour the pyroxene 
may be suspected to be related to the manganese-pyroxenes of the 
blanfordite type. The galena has been introduced subsequent to the 
formation of the rock by the process of metasomatic replacement. Along 
cracks the garnet is usually finely crystalline, showing faces of the 
rh om b- dodecahedron. 
