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heavy spar
heavy spar
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Word History and Origins
Origin of heavy spar1
First recorded in 1780–90
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Example Sentences
A mixture of two parts of heavy spar and one of the plumbous compound.
From Project Gutenberg
Composed of heavy spar and the carbonate in equal proportions.
From Project Gutenberg
There appears to be none of the radiated quartz, or white opaque heavy spar, which are so abundantly found at the Missouri mines.
From Project Gutenberg
At these places, it is most frequently connected with a gangue of heavy spar and calcareous spar, with pyrites of iron.
From Project Gutenberg
Barytes scratches easily with the knife, and from its great specific gravity is often called heavy-spar.
From Project Gutenberg
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