Journal of the Mineralogical Society of Korea (한국광물학회지)
- Volume 12 Issue 2
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- Pages.77-90
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- 1999
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- 1225-309X(pISSN)
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- 2288-7172(eISSN)
Elemental Correlations of Chemical Compositions in Co-rich Mn-crusts of the Republic of Marshall Islands
마샬공화국 고코발트망간각 화학조성의 원소 상관관계
Abstract
Characteristics and variations of chemical compositions in Co-rich crusts occurred in the EEZ of the Republic of Marshall Islands were reviewed. Correlation coefficient analysis, hierarchical cluster analysis, and Q-mode factor analysis for 62 samples were done in this study. All data were selected and gathered from the open file report of the cooperative cruise done by United States Geological Survey with Scripps Institute of Oceanography, University of Hawaii or Korea Ocean Research Development Institute. The average of crust thickness. Co content, and Ni content of 62 samples from the 21 seamounts were 30mm, 0.58 wt% and 0.40%, respectively. The mineral phases and associated elements assigned by correlation coefficients, cluster analysis and Q-mode factor analysis are following four. 1) CFA: P, Ca, CO2, Y, Sr: 2) Mn-oxide mineral: As, Mn, Co, Na: 3) Al-silicate mineral: Pd,Si, Al, Cu, Fe: 4) PGE-bearing mineral: Rh, Pt, Ir.
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