Definitions
from The Century Dictionary.
- noun Gray copper or gray-copper ore: called by mineralogists, from the shape of its crystals, tetrahedrite. Sometimes, half-translated, fahlore.
from the GNU version of the Collaborative International Dictionary of English.
- noun (Min.) Same as
tetrahedrite .
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun mineralogy
fahlband
Etymologies
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Examples
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Silver is found in the ores of other metals, such as fahlerz, which sometimes contains from two to ten per cent. of the metal, and galena, which is an important source of it; in fact, galena is never found entirely free from silver.
A Text-book of Assaying: For the Use of Those Connected with Mines. Cornelius Beringer 1886
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One gram of copper pyrites, blende, fahlerz, or mispickel, yields 7 or 8 grams of lead, whilst 1 gram of antimonite will give 6, and 1 gram of galena only
A Text-book of Assaying: For the Use of Those Connected with Mines. Cornelius Beringer 1886
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Sulphide of antimony is also a constituent of fahlerz and of many silver ores.
A Text-book of Assaying: For the Use of Those Connected with Mines. Cornelius Beringer 1886
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They contained pyrites, carbonated iron-ore, traces of sulphuretted silver (glasserz), and grey copper-ore (fahlerz).
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We there found some fine specimens of blue carbonated copper mingled with sulphate of barytes and quartz; but we could not ourselves judge whether the ore contained any argentiferous fahlerz, and whether it occurred in a stratum, or, as the apothecary who was our guide asserted, in real veins.
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They contained pyrites, carbonated iron-ore, traces of sulphuretted silver (glasserz), and grey copper-ore (fahlerz).
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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We there found some fine specimens of blue carbonated copper mingled with sulphate of barytes and quartz; but we could not ourselves judge whether the ore contained any argentiferous fahlerz, and whether it occurred in a stratum, or, as the apothecary who was our guide asserted, in real veins.
Personal Narrative of Travels to the Equinoctial Regions of America, During the Year 1799-1804 — Volume 2 Alexander von Humboldt 1814
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