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copper ore MIN

purple copper ore

red copper ore

variegated copper ore MIN

yellow copper ore

Monolingual examples (not verified by PONS Editors)

English
By 1890 a new smelter was built to treat copper ore, and the town's population reached 400.
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For the next half century both properties were quarried intermittently for their high-grade copper ore.
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When mining operations first began, the lack of smelting facilities meant that the copper ore had to be sent away for smelting.
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By 1938, the mine had become successful and processed 2,000 tons of copper ore daily.
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The copper ore is a calc-alkali porphyry copper-gold-molybdenum deposit.
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The amount of copper ore mined between 1826 and 1906 was 86,800 tons.
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Deposits of iron ore were located in different places to the tin and copper ore necessary to make bronze.
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The chief mineral was copper ore, with some tin and arsenic also; timber and coal was brought in to serve the mines.
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A possible sequence of events in prehistory involves considering the structure of copper ore deposits, which are mostly sulphides.
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The peak of this enterprise was around 1840, when some 100,000 tons of copper ore were shipped out each year.
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