| 单词 | tierras-ore |
| 释义 | > as lemmastierras-ore Pulverulent ore, spec. of quicksilver, mingled with sand and earthy matter; in Mexico, inferior pulverulent ores generally. Also attributive, as tierras-furnace, tierras-ore. ΘΚΠ the world > the earth > minerals > ore > [noun] > pulverulent or granular seed ore1795 tierras1874 1874 R. W. Raymond Statistics Mines & Mining 397 In 1865, the amount of ore worked was 15,974 tons. Of which the Tierras amounted to 1,955 tons... Tierras yielded (estimated) 3 per cent., or 1,533 flasks. 1877 R. W. Raymond Statistics Mines & Mining 9 Number of tons tierras-ore roasted. 1877 R. W. Raymond Statistics Mines & Mining 17 A new tierras-furnace will take its place. 1881 Trans. Amer. Inst. Mining Engineers 1880–1 9 186 Tierras,..fine dirt impregnated with quicksilver ore, which must be made into adobes before roasting. < as lemmas |
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