IX.— Notes on A Cape BreTON MINERAL CONTAINING 
TUNGSTEN, AND ON THE EFFECT OF WASHING CERTAIN 
CaPE BRETON CoAaLs.—By Henry S. Poorz, F.G.S., 
F.R.S.C., Assoc. Roy. Sch. Mines, etc., Stellarton, N. S. 
(Read April 14th, 1900.) 
In the last issue of the Transactions of this Institute there 
was published a paper read March 13th, 1899, entitled “New 
Mineral Discoveries in Nova Scotia.” The paper made reference 
to the finding at North East Margaree, C. B., of a mineral con- 
taining tungsten and speaks of it as Wolframite with 67.47 per 
cent. of W O,, but makes no note of its other constituents. A 
month later, at a meeting of the Mining Society, Mr. A. C. Ross: 
read a paper on the same mineral, and in the discussion which: 
followed an analysis made by Mr. Mason, the assayer at Hali-- 
fax, was given by Mr. Missener. This analysis,* of concentrated 
ore, showed but a trace of iron, and was as follows :— 
Pumesten, Brioxide :..'<..se0s sek Siac yee, OOS 
SiCaar aera scte ate. s.../<cls. ace anne Saas , Ono 
MUBVICUNO ES San heh ern A as 3 Seis lo) 
ING Uipe sy re aioe ens os v5 ence ooo 2 ee ee ee 
8471 
* The following letter from Mr. Mason gives additional information about this 
analysis :— 
Halifax, Nova Scotia, April 23rd, 1900. 
My DEAR MR. POOLE: 
The analysis was made for commercial purposes, not for scientific ones. How- 
ever, being of a curious turn of mind Iam able to give you some further information, 
although unfortunately only qualitative, not quantitative. A close inspection of the 
mineral (I fancy I gave you a sample) will I think reveal that it is composed of Quartz: 
and Hiibnerite principally, but there is also a little Scheelite. With regard to the 
missing 15 per cent., the Manganese is reported as metal. I fancy it exists in the 
mineral as Mng Og, and if so, that accounts for a difference of about 4.5%. The bal- 
ance was made up of mixed oxides of Niobium and Tantalum, and also of Lime. 
Whether the lime all belongs to the scheelite or whether part of it should join the 
quartz as gangue, I did not determine. I regret that I have mislaid the memo. of the 
quantities. I did not discover that the mineral also contained Scheelite until I panned 
some of it, but afterwards clearly detected it in some samples but could not find it in 
others. Yours very truly, 
F. H. Mason 
