DOO MANGANESE DEPOSITS OF INDIA : DESCRH"riVE. [1*A11T iV ; 
whilst ramifying strings of this garnet occurred in it in other places. 
.Some patches of the rock, however, were free trom garnet. The man- 
ganese required for the formation of the garnet was presumably absorbed 
from the ore-body at the time of the intrusion of the felspar-rock. 
Fig. G4. — Intrusion of felspar-reck into the ore-body at Beldongri. 
The manganese- ores found in this (|uarry are rather varied in char- 
mlitv ^t't^i"- The large bulk of the ore is composed of 
the four following varieties, which pass into each 
other : — 
Nature and 
of the ores. 
(1) Grey, fine-grained, crystalline, rather friable, consisting of 
predominating braimite grains in a subordinate psilomelane 
matrix. 
(2) Similar to 1, but less friable, probably on account of a larger 
proportion of psilomelane. 
(3) Similar to 2 but coarser-grained and not friable, and evidently 
containing a higher proportion of psilomelane. 
(4) Hard, fine-grained, and with a still larger proportion of psilo- 
melane. 1 to 3 all contain little cavities, often arranged 
in 1 ayers, lined with soft black manganese oxidt. This 
variety is practically free from them. 
