Mineral control on the geochemistry of the Rock Canyon Creek REE-F-Ba deposit, British Columbia, Canada
Mineral control on the geochemistry of the Rock Canyon Creek REE-F-Ba deposit, British Columbia, Canada
复制标题
加拿大不列颠哥伦比亚省 Rock Canyon Creek REE-F-Ba 矿床地球化学的矿物控制
DOI:
10.1144/geochem2020-010
复制
发表时间:
2021
期刊:
影响因子:
--
通讯作者:
Kon Yoshiaki
中科院分区:
文献类型:
--
作者:
Simandl George J.;Paradis Suzanne;Savard Johnathan;Miller Deanna;D'Souza Rameses;Araoka Daisuke;Akam Carlee;Hoshino Mihoko;Kon Yoshiaki
The Rock Canyon Creek carbonate-hosted REE-F-Ba deposit has tectonic, stratigraphic and structural similarities with Mississippi Valley-type and sparry magnesite deposits in the SE Rocky Mountains. The main REE-fluorite zone is a steeply dipping body, extending 1100 m along-strike, 50 m wide and 100 m deep. It spatially coincides with pre-existing crackle breccias in carbonate rocks, and consists of dolomite, fluorite, barite, pyrite, quartz, K-feldspar, calcite, porous apatite, REE-fluorocarbonates and REE-phosphates. The main fluorocarbonates are bastnaesite, parisite and synchysite. Monazite, crandallite group minerals and apatite are the main phosphates. Fluorite content varies from less than 1 to 13.5%(by weight) and∑ REE+ Y concentrations vary from trace to 1.95%(by weight). The mineralized zone is heterogeneous on the deposit scale, as indicated by three-dimensional geochemical modelling combined with a geochemical assessment based on 89 mineralized samples and detailed downhole mineral and geochemical profiles of a key borehole. Chemical heterogeneity and key elemental co-variations are explained by strong mineralogical control and have implications for the design of exploration and development programmes for this type of deposit. The chondrite-normalized REE pattern of samples from the mineralized zone shows enrichment in LREE, similar to typical carbonatite-related mineralization; however, no carbonatite is exposed nearby.
登录
查看更多内容
DOI:
10.1144/geochem2018-061
发表时间:
2018
期刊:
Geochemistry: Exploration, Environment, Analysis
影响因子:
--
作者:
S. Amor;M. McCurdy;R. Garrett
通讯作者:
R. Garrett
DOI:
10.1144/geochem2012-180
发表时间:
2014
期刊:
--
影响因子:
--
作者:
G. Simandl;R. Fajber;Suzanne Paradis
通讯作者:
Suzanne Paradis
DOI:
10.4095/288765
发表时间:
2011
期刊:
--
影响因子:
--
作者:
M. McMechan;G. Leech
通讯作者:
G. Leech
DOI:
10.1144/geochem2012-177
发表时间:
2014
期刊:
--
影响因子:
--
作者:
G. Simandl;Suzanne Paradis;R. S. Stone;R. Fajber;R. Kressall;K. Grattan;J. Crozier;L. Simandl
通讯作者:
L. Simandl
DOI:
--
发表时间:
2019
期刊:
--
影响因子:
--
作者:
M. Templ
通讯作者:
M. Templ