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" It consists of lead 8G.r> to sulphur 13.5 in the hundred parts. Its value is much enhanced by the silver it carries, which varies from 30 to 56 ounces for the ton of 2,000 pounds of the galena. Besides the above, the components of the mine are ores of... "
Sir Cosmo Digby - Strana 205
autor/autoři: James Augustus St. John - 1843
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Elements of Natural History: Invertebrata, &c

John Stark - 1828 - 542 str.
...columella blotched with deep brown. Nearly 4 inches long. Inhabits the Indian seas. — Bonau. 3, tig. 185. This is the most common, and at the same time the most beautiful species of the genus. Gen. 17. CONCHOLEPAS, Lam. — Buccinum, Brug. Shell ovate, inflated,...
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Hunt's Merchants' Magazine and Commercial Review, Svazek 36

Freeman Hunt, Thomas Prentice Kettell, William Buck Dana - 1857 - 820 str.
...gravity is 5.4. It will be a rich and lasting source of copper to the mine. Ore of Lead.— Galena. — This is the most common, and at the same time, the most valuable ore of lead. It consists of lead 86.5 to sulphur 13.5 in the hundred parts. Its value is much...
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The Merchants' Magazine and Commercial Review, Svazek 36

1857 - 802 str.
...gravity is 5.4. It will be a rich and lasting source of copper to the mine. Ore of Lead. — Galena. — This is the most common, and at the same time, the most valuable ore of lead. It consists of lead 8G.r> to sulphur 13.5 in the hundred parts. Its value is...
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Merchants' Magazine and Commercial Review, Svazek 36

1857 - 800 str.
...gravity is 5.4. It will be a rich and lasting source of copper to the mine. Ore of Lead. — Galena. — This is the most common, and at the same time, the most valuable ore of lead. It consists of lead 8G.O to sulphur 13.5 in the hundred parts. Its value is much...
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The Diamond Fields of Southern Africa

Percy Albert Wagner - 1914 - 468 str.
...it to become disintegrated on exposure for a comparatively brief period to the atmospheric agencies. This is the most common, and at the same time the most important, variety of hardebank, because, as previously intimated, it is sooner or later encountered...
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