Dr. How on the Mineralogy of Nova Scotia, 167 





Calculation. 



MnO 2 . 

 MnO . 

 HO 



. . 43-57 49-43-1 



. . 35-57 40-36J 8y5lj 



. . 9-00 10-21 



88-14 10000 



for it is obvious that, if allowance were made for the unessential 

 ingredients, there would be very close accordance. Another spe- 

 cimen of hard ore resembling the former, and probably from the 

 same locality, gave a chocolate powder, and afforded 



Binoxide of manganese, 45*4 == 82'4 per cent, sesquioxide, 



with barytes and a little carbonate of lime, — results which prove it 

 to be also manganite. 



This species forms a curious bed of conglomerate, along with 

 quartz pebbles, about ten miles to the west of Walton on the op- 

 posite shore of the estuary of the Avon, formerly considered 

 to belong to the New Red Sandstone. » 



Pyrolusite. — This species is found at numerous localities in 

 different parts of the province, and is now being mined in consi- 

 derable quantity at one of them, viz. at Teny Cape, in Hants Co., 

 about five miles from Walton, where about a thousand tons have 

 been got out within the last two years, the bulk of which has 

 been readily sold in England. It occurs here in the form of 

 nodules of irregular, generally rather flattened shape, of all sizes, 

 from that of a bean up to that of a man's head, or even twice as 

 large, and weighing proportionately up to about twenty-five 

 pounds. These masses lie loose in a bed of "soil" about a foot 

 thick and a foot below the surface : they consist of pyrolusite and 

 psilomelane. Some feet below this bed, in a grey and brick- 

 coloured limestone containing magnesia, the ore is found, in very 

 thin deposits, which, from the easily separable nature of the rock, 

 can be laid bare in sheets, and also in "pockets" or interrupted 

 chains of deposits of very variable dimensions, sometimes but a 

 few inches in depth, and thickening out to several feet. I have 

 seen one egg-shaped mass exposed in situ estimated to be of three 

 tons weight. One of these " pockets," running east and west at a 

 depth of 15 feet from the surface, was about 72 feet in length, 

 varied in thickness from 6 inches to 14 feet, and was practically 

 exhausted on the removal of about 130 tons of ore. A second 

 runs parallel with this, at a depth of 30 feet from the surface, 

 and has been found to extend at least 105 feet : it had yielded 

 up to August last about 300 tons of ore ; and a large quantity 

 remained. Below this, again, at a depth of 50 feet from the 

 surface, other deposits have been met with, the form and dimen- 



N 2 



