| Abstract: | Feruvite, an uncommon Ca- and Fe2+-rich tourmaline species, has been discovered in the footwall of the Sullivan Pb-Zn-Ag deposit (British Columbia) near gabbro sills and dikes. Its chemical composition varies according to occurrence: feruvite from the shallow footwall has lower Ca, higher Al, and higher X-site vacancies than that from the deep footwall. The major chemical substitution involved in the feruvite is the exchange vector CaMgO???-1Al-1(OH)-1. The most important factor controlling feruvite formation at Sullivan is likely the reaction of Fe-rich hydrothermal fluids with Ca-rich minerals in gabbro and host rocks. This reaction led to the breakdown of Ca-rich minerals (plagioclase and hornblende), with release of Ca to solution and its incorporation into feruvite. This process probably postdated the main stages of formation of fine-grained, intermediate schorl-dravite in the tourmalinite pipe in the footwall, and is attributed to postore intrusion of gabbro and associated albite-chlorite-pyrite alteration. |
| Genre: | Article |
| ProdID: | 70019025 |
| Citation Author: | Jiang, S. -Y.; Palmer, M. R.; McDonald, A. M.; Slack, J. F.; Leitch, C. H. B. |
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| Citation End Page: | 740 |
| Citation Issue: | 4 |
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| Citation Language: | English |
| Citation Larger Work Title: | Canadian Mineralogist |
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| Citation Number Of Pages: | 8 |
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| Citation Search Results Text: | Feruvite from the Sullivan Pb-Zn-Ag deposit, British Columbia; 1996; Article; Journal; Canadian Mineralogist; Jiang, S. -Y.; Palmer, M. R.; McDonald, A. M.; Slack, J. F.; Leitch, C. H. B. |
| Citation Start Page: | 733 |
| Citation Volume: | 34 |
| Citation Year: | 1996 |
| Type: | citation/reference |
| Text: | Feruvite from the Sullivan Pb-Zn-Ag deposit, British Columbia; 1996; Article; Journal; Canadian Mineralogist; Jiang, S. -Y.; Palmer, M. R.; McDonald, A. M.; Slack, J. F.; Leitch, C. H. B. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Mon, 1 Jan 1996 00:00 -0600 |
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