Feruvite from the Sullivan Pb-Zn-Ag deposit, British Columbia
Canadian Mineralogist
By: S.-Y. Jiang, M. R. Palmer, A.M. McDonald, J. F. Slack, and C.H.B. Leitch
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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.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Feruvite from the Sullivan Pb-Zn-Ag deposit, British Columbia |
| Series title | Canadian Mineralogist |
| Volume | 34 |
| Issue | 4 |
| Year Published | 1996 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Canadian Mineralogist |
| First page | 733 |
| Last page | 740 |
| Google Analytic Metrics | Metrics page |