190 
MANGANESE DEPOSITS OF INDIA : MINERALOGY. [ PaRT I 
Jothvdd : — At this place several specimens of rocks containing this 
mineral were collected, and are as follows : — 
(1) Crystalline limestone containing spessartite, rhodonite, and 
piedmontite. 
(2) Spessartite-calcite-quartz-rock containing apatite, woUa- 
stonite, piedmontite, and a lavender-coloured mineral not 
yet identified. This rock might be called a calciphyre. 
(3) Banded rock of which one layer, 1-inch thick, consists of 
apatite-spessartite-piedmontite-rock, the latter being the 
most important constituent. 
(4) As black crystals of piedmontite associated with white 
quartz, lining a vein-like cavity traversing the remainder 
of the rock, which consists of bands of apatite-spessartite- 
piedmontite-rock and of spessartite-quartz-rock, containing 
apatite, piedmontite, and pyroxene. 
(5) As rose-pink patches in granite at the place where it has 
absorbed portions of the rocks of the manganiferous 
series. 
I have examined slides of all these rocks under the microscope and 
find that they exhibit the colours characteristic of manganiferous epi- 
dotes. Considering their associations it is improbable that any of them 
are withamite or thulite ; for they must all be manganiferous, except 
perhaps the Maharkund occurrence. I have not yet been able to exa- 
mine them carefully enough to determine their sign and thus settle if any 
of them are to be called mangan-epidote rather than piedmontite. In 
most cases it will probably be a matter of extreme difficulty, because 
only chance sections of the mineral obtained in microscope slides 
will be available. In a few cases at Pali the pleochroism tints are pale, 
and it then seems possible that the mineral is only a variety of com- 
mon epidote containing a small quantity of manganese. Provisionally, 
however, I propose to group all these occurrences under piedmontite. 
In one case onlj^ have I observed definite crystal faces. This is 
in the Jothvdd rock. No. 4, where the mineral 
pi^ed^ronTite"*^ what seems to be the two sides of a veinlet. 
The crystals are up to | inch long and one especi- 
ally good example shows faces that are, as far as can be determined 
\vithout actual measurement, the following :— a (100), c (001), and 
r f 101), forming a prism parallel to the b axis, terminated at one end 
by faces that may correspond to the prism m(llO) and one of the 
