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II.—A Lava from Montserrat, West Indies
Published online by Cambridge University Press: 01 May 2009
Extract
In the March and April Numbers of the Geological Magazine, Mr. J. J. Harris Teall describes some beautiful rocks from the Cheviots, containing a rhombic pyroxene with well-marked pleochroism, and as there seems little doubt that this mineral, which we must consider hypersthene, has been hitherto overlooked in a good many rocks, another note of its occurrence may perhaps possess some interest.
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