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- Title
Trace element geochemistry of scheelite and rutile from metaturbidite-hosted quartz vein gold deposits, Meguma Terrane, Nova Scotia, Canada: genetic implications.
- Authors
Dostal, Jaroslav; Kontak, Daniel J.; Chatterjee, A. K.
- Abstract
Scheelite and rutile from several metaturbidite-hosted gold-bearing quartz vein deposits of the Meguma Terrane of Nova Scotia were analyzed for trace elements including rare earth elements, niobium and tantalum. Scheelites have high concentrations of Sr, Nb, Y and rare earth elements (REE) with bell-shaped chondrite-normalized REE patterns accompanied by both positive and negative Eu anomalies. They also have high Nb/Ta ratios (80–300). Three distinct trace element types of the scheelites are interpreted to reflect chemical differences in the pulses of hydrothermal fluids. Hydrothermal rutiles have high contents of W (up to 4.2 wt.% WO3), are rich in Ta compared to Nb and have a very low Nb/Ta ratio (~0.3). Hydrothermal fluids which produced both scheelite with a high Nb/Ta and rutile with a low Nb/Ta ratio are an efficient medium for fractionation of this ratio although these two minerals play an important role during the process.
- Subjects
NOVA Scotia; SCHEELITE; RUTILE; TURBIDITES; QUARTZ; GENETICS; TRACE elements
- Publication
Mineralogy & Petrology, 2009, Vol 97, Issue 1/2, p95
- ISSN
0930-0708
- Publication type
Article
- DOI
10.1007/s00710-009-0067-0