804 
MANGANESE DEPOSITS IN INDIA : DESCRIPTIVE. [ ParT IV: 
were well known long before much attention was given to 
manganese-ore deposits in other parts of India. Mr. Olpherts in 1875 
first brought the Gosalpur pyrolusite to the notice of Government. In 
1879 it was examined by Mr. H. B. Medlicott, the then Superintendent 
of the Geological Survey, and a note on the ore, with an analysis, pub- 
lished by Mr. Mallet, i In his paper on the iron-ores of the north- 
eastern portion of the Jabalpur district ~ pubUshedin 1883, Mr. Mallet 
describes the manganiferous hematite with associated psilomelane of 
Ghogra, Dhanwahi, Khatola, and Gosalpur. In a second paper^ 
immediately following he gives his views on the origin of the Gosalpur 
pyrolusite. 
In 1884, Mr. C. W. McMinn, then Deputy Commissioner of Jabal- 
pur, sank a number of pits to ascertain the extent of the Gosalpur 
manganese-ores, and Dr. King, who had succeeded Mr. Medlicott as 
Director of the Geological Survey, paid a hurried visit in the same year. 
In the Durga Puja holidays of 1887, Mr. E. J. Jones of the Geological 
Survey continued the exploration of the ores, and immediately after 
Mr. P. N. Bose, also of the Geological Survey, was deputed to make 
a thorough examination of the manganese- ores of this district. 
Mr. Boss's work led to the discovery of many additional localities for 
pyrolusite, psilomelane, and manganiferous hematite ; and to test .several 
of them he had numerous pits and trenches dug. The result of his 
labours is pubUshed in two separate papers, the first in 1888, giving 
a detailed description of the various deposits, with, in many cases, 
estimates of the quantities of ore available, and the second^, in 1889, 
dealing with the geological relations and origin of the ores. 
During 1904 I paid a visit to this district and examined several of 
the principal deposits, cleaning up a few of Mr. Bose's trenches and 
pits. As the result of this examination I find myself in fairly good 
1' On Pyrolusite with Psilomeluue ocouiring at Gosfilpui , Jabalpur P-istrict.' Rec, 
G. S. I., XII. pp. 99, 100, (1879). 
2 Rec. O. S. I., XVI. pp. 94—115. 
3 ' On Lateritic and other Manganese Ore occurring at Gosalpur, Jabalpur District.' 
Ibid., pp. 116—118. 
* 'The Manganese- Iron and Manganese-Ores of Jabalpur.' Rec. G. S. I., XXI, 
pp.74— 89. (1888). 
5 ' The Manganiferous Iron and Manganese Ores of Jabalpur." Rec. G. S. I., XXII 
pp. 216— 226, (1889). 
