Report On the Tungsten Ores of Canada
Report On the Tungsten Ores of Canada
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R. Atkin 1 was the first to recognize this mineral as scheelite. 2 Later, in drifting in connexion with placer mining, a shoulder of the bed-rock was cut and the mineral was discovered in place. Knowing the value of the scheelite, the ground was staked as a mineral claim (carrying rights to operate in the hard bed-rock). At the time of my visit August, 1908 the mine was idle, but from those interested I learned that a shaft had been sunk about 30 feet in the rock, and, drifting ulong the scheel...ite zone, had been carried about 50 or 60 feet. The deposit as revealed by the underground working, appears to constitute a zone from 3 to 8 feet wide, following the northwest- southeast strike of the country rock, which is here much metamor- phosed to a mica schist. Mr. Angus Macpherson who had charge of the underground work informs me that masses of practically pure scheelite were found, at times 50 pounds in weight. The scheelite is coarsely crystalline, pink to brown, where fresh, but buff to cream in colour where weathered on the surface as found in the gravels.
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To quickly assess the difficulty of the text, read a short excerpt:
R. Atkin 1 was the first to recognize this mineral as scheelite. 2 Later, in drifting in connexion with placer mining, a shoulder of the bed-rock was cut and the mineral was discovered in place. Knowing the value of the scheelite, the ground was staked as a mineral claim (carrying rights to operate in the hard bed-rock). At the time of my visit August, 1908 the mine was idle, but from those interested I learned that a shaft had been sunk about 30 feet in the rock, and, drifting ulong the scheel...ite zone, had been carried about 50 or 60 feet. The deposit as revealed by the underground working, appears to constitute a zone from 3 to 8 feet wide, following the northwest- southeast strike of the country rock, which is here much metamor- phosed to a mica schist. Mr. Angus Macpherson who had charge of the underground work informs me that masses of practically pure scheelite were found, at times 50 pounds in weight. The scheelite is coarsely crystalline, pink to brown, where fresh, but buff to cream in colour where weathered on the surface as found in the gravels.
What to read after Report On the Tungsten Ores of Canada?
You can find similar books in the "Read Also" column, or choose other free books by Canada Mines Branch to read onlineMoreLess
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