Pliocene Intrusions in the Gunung Bijih (Ertsberg) Mining District, Irian Jaya, Indonesia: Major- and Trace-Element Chemistry

1994 ◽  
Vol 36 (10) ◽  
pp. 925-946 ◽  
Author(s):  
Timothy P. Mcmahon
Keyword(s):  
Trace Element ◽  
Mining District ◽  
Irian Jaya ◽  
Trace Element Chemistry ◽  
Element Chemistry

TRACE ELEMENT CHEMISTRY OF EMERALDS

2018 ◽  
Author(s):  
Casey Beaudoin ◽  
◽  
G. Nelson Eby
Keyword(s):  
Trace Element ◽  
Trace Element Chemistry ◽  
Element Chemistry

Chemical variation of clinopyroxene phenocrysts from the trachybasaltic lavas of Mount Etna, Sicily

1980 ◽  
Vol 43 (330) ◽  
pp. 765-770 ◽  
Author(s):  
A. M. Duncan ◽  
R. M. F. Preston
Keyword(s):  
Trace Element ◽  
Mount Etna ◽  
Chemical Variation ◽  
Etna Volcano ◽  
Trace Element Chemistry ◽  
Sector Zoning ◽  
Steady Decrease ◽  
Element Chemistry

SummaryThe chemical variation of clinopyroxene phenocrysts from the trachybasaltic lavas of Etna volcano is described. The phenocrysts show a limited, but distinct trend in chemical variation from calcic-augite in the hawaiites to augite in the benmoreites. The trend of this variation is unusual, being one of Mg-enrichment with differentiation of the magma. Ca shows a steady decrease in the clinopyroxenes from the hawaiites to the benmoreites. Na, however, shows little chemical variation in the pyroxenes. The trace element chemistry is briefly examined. The clinopyroxenes show well-developed oscillatory and sector zoning. The basal {11} sectors are enriched in Si and Mg and depleted in Ti, Al, and Fe relative to the {100}, {110}, and {010} prism sectors.

Geochemistry of the 1989–1990 eruption of redoubt volcano: Part I. Whole-rock major- and trace-element chemistry

1994 ◽  
Vol 62 (1-4) ◽  
pp. 429-452 ◽  
Author(s):  
Christopher J. Nye ◽  
Samuel E. Swanson ◽  
Victoria F. Avery ◽  
Thomas P. Miller
Keyword(s):  
Trace Element ◽  
Trace Element Chemistry ◽  
Element Chemistry

Trace element chemistry of major rivers in Orissa State, India

1997 ◽  
Vol 29 (1-2) ◽  
pp. 132-141 ◽  
Author(s):  
K. O. Konhauser ◽  
M. A. Powell ◽  
W. S. Fyfe ◽  
F. J. Longstaffe ◽  
S. Tripathy
Keyword(s):  
Trace Element ◽  
Trace Element Chemistry ◽  
Element Chemistry

scholarly journals Mineralogy and Trace Element Chemistry of Ferberite/Reinite from Tungsten Deposits in Central Rwanda

Minerals ◽  
2013 ◽  
Vol 3 (2) ◽  
pp. 121-144 ◽  
Author(s):  
Simon Goldmann ◽  
Frank Melcher ◽  
Hans-Eike Gäbler ◽  
Stijn Dewaele ◽  
Friso Clercq ◽  
...  
Keyword(s):  
Trace Element ◽  
Trace Element Chemistry ◽  
Element Chemistry ◽  
Tungsten Deposits
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