Cha?. VI. ] 
SPESSARTITE, 
reason that no analysis has yet been made of manganese-gamets in such 
pegmatites. The crystals are trapezohedral in form and if complete 
would often be 1 to 2 inches in diameter. One piece gave a value for 
G of 4 '02, which is rather low for this mineral, although within the limits 
(see fig. 13). 
At Gaimuhh the mineral is found in a rock containing a certain 
amount of quartz and rhodonite, with spessartite as the chief mineral. 
It occurs in beautiful trapezohedral crystals up \ inch in diameter, the 
smaller crystals being a beautiful deep orange-red in colour, and the 
larger ones blackish. 
The best locality of all is the pit known as the Kamthi Lady Pit, situa- 
ted at the eastern end of the Chdrgdon portion of the Mansar deposit. 
The occurrence is described on page 883. The garnets are often most 
beautiful trapezohedra, sometimes exhibiting all 24 faces, which are usually 
striated parallel to the faces of the dodecahedron. Fig. 14 on page 172 re- 
presents a garnet from Chargaon. Other faces to be noticed below are also 
sometimes seen. 
At Sdtak the garnets occur in garnet-rhodonite-rock very similar to 
that of Chargaon. They show trapezohedral faces, and if whole some of 
them would be 11 inches in diameter. The colour is yellowish black. 
Good crystals are also foimd in amphibole-gondite, although in this case 
they are smaller. At Waregdon I have obtained a considerable number of 
fine specimens of this mineral. Indeed, after Chargaon, it is the best 
locaUty ; but on accoimt of the abandonment of the quarry, which is now 
filled with water, it is doubtful if any more specimens could be obtained, 
except by searching the dumps. These specimens consist partly of spes- 
sartite -rock and partly of spessartite- quartz-rock, the latter being the 
more favourable for the development of good crystals. The latter are, 
as usual, trapezohedra, occasionally showing dodecahedral and hexocta- 
hedral faces. Some of them if whole would be Ij to 2 inches in 
diameter. In colour they vary from deep orange-red to chocolate- 
brown, the latter being due to alteration (see figures 13, 15, 17, 18, 19 
and Plate 7). 
The Kulu garnets are practically perfect dodecahedra up to nearly J 
inch in diameter and of a deep brown-red colour when whole. The specific 
gravities of two of them were found to be 411 and 4 "16, respectively. 
That they are spessartite was confirmed by Babu Kiran Kumar Sen- 
gupta, who found one of them to consist almost entirely of silica and 
oxides of iron, manganese, and alumina (see fig. 16). 
