Definitions
from The Century Dictionary.
- noun A dark-brown or black shale, often bituminous, and in some parts of Germany, especially at Mansfeld in the Harz, sufficiently charged with copper ore to be worked with profit for that metal. It belongs to the Permian series.
Etymologies
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Examples
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It contains strata of schistous and coppery marl (bituminoce mergel and kupferschiefer) which form an important object in the working of mines at Mansfeld in Saxony, near Riegelsdorf in Hesse, and at Hasel and Prausnitz, in Silesia.
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It contains strata of schistous and coppery marl (bituminoce mergel and kupferschiefer) which form an important object in the working of mines at Mansfeld in Saxony, near Riegelsdorf in Hesse, and at
Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 1 Alexander von Humboldt 1814
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