Compositional variations in wolframite from the Hamme (Tungsten Queen) mine, North Carolina

M. L. Bird; J. E. Gair

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USGS · 70156646

Compositional variations in wolframite from the Hamme (Tungsten Queen) mine, North Carolina

M. L. Bird·J. E. Gair

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Abstract

A microprobe study of wolframite from the Tungsten Queen mine, Hamme district, North Carolina, proves it to be almost pure huebnerite. Concentric zoning, which shows up as light-brown and dark-brown bands, indicates small variations in the content of FeO. There is no apparent correlation between the small variations in the composition of the wolframite and its position in the mine. The Fe/Mn ratio of the wolframite is not indicative of the temperature of crystallization.

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Journal of Research of the U.S. Geological Survey Article

Source-reported bounding extent: 36.5° to 36.6° latitude; -78.5° to -78.4° longitude. This indicates report coverage, not an exact sampling location. View area on OpenStreetMap.

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M. L. Bird, J. E. Gair. 1976. Compositional variations in wolframite from the Hamme (Tungsten Queen) mine, North Carolina. https://pubs.usgs.gov/publication/70156646

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