Tourmaline in Appalachian - Caledonian massive sulphide deposits and its exploration significance.
Transactions of the Institution of Mining and Metallurgy, Section B: Applied Earth Science
By: J. F. Slack
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Abstract
Tourmaline is a common gangue mineral in several types of stratabound mineral deposits, including some massive base-metal sulphide ores of the Appalachian - Caledonian orogen. It is most abundant (sometimes forming massive foliated tourmalinite) in sediment-hosted deposits, such as those at the Elizabeth Cu mine and the Ore Knob Cu mine (North Carolina, USA). Trace amounts of tourmaline occur associated with volcanic-hosted deposits in the Piedmont and New England and also in the Trondheim district. Tourmaline associated with the massive sulphide deposits are Mg- rich dravites with major- and trace-element compositions significantly different from schorl. It is suggested that the necessary B was produced by submarine exhalative processes as a part of the same hydrothermal system that deposited the ores. An abundance of dravite in non-evaporitic terrains is believed to indicate proximity to former subaqueous fumarolic centres.-R.A.H.
Suggested Citation
Slack, J.F., 1982, Tourmaline in Appalachian - Caledonian massive sulphide deposits and its exploration significance.: Transactions of the Institution of Mining and Metallurgy, Section B: Applied Earth Science, v. 91, no. May, p. 81-89.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Tourmaline in Appalachian - Caledonian massive sulphide deposits and its exploration significance. |
| Series title | Transactions of the Institution of Mining and Metallurgy, Section B: Applied Earth Science |
| Volume | 91 |
| Issue | May |
| Year Published | 1982 |
| Language | English |
| Publisher | Institution of Mining and Metallurgy |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Transactions of the Institution of Mining and Metallurgy, Section B: Applied Earth Science |
| First page | 81 |
| Last page | 89 |