Strontium and sulfur isotope geochemistry of the Galeana barite district, Nuevo Leon, Mexico

S. E. Kesler, L. M. Jones, Joaquin Ruiz

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Sulfur and strontium isotope analyses have been used to test the possibility that barite veins in the Galeana district of northeastern Mexico formed where barium-bearing solutions intersected an overlying gypsum-bearing unit. Sulfur isotope analyses confirm that the sulfur in the barite has the same range as Olvido gypsum. The mean isotopic composition of the barite is about 1.2 per mil heavier than the mean gypsum composition, suggesting that fractionation took place during barite deposition. Strontium isotope compositions of Huizachal Group rocks fall on an isochron with an age of 227.5 ± 3 m.y. and an initial 87Sr/86Sr ratio of 0.70816 ± 0.00004, and the age-corrected, average Huizachal isotopic composition agreed with that of the Galeana barites about 30 m.y. ago, consistent with the geologic estimates of the age of mineralization. Compositions of whole rocks and dilute acid leachates from the Huizachal Group indicate that the strontium, and presumably also the barium, were derived from the bulk rock rather than the easily leachable carbonate cement and veinlets. Additional study results are discussed.

Original languageEnglish (US)
Pages (from-to)1907-1917
Number of pages11
JournalEconomic Geology
Volume83
Issue number8
StatePublished - Dec 1988
Externally publishedYes

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Strontium Isotopes
Sulfur Isotopes
strontium isotopes
Barium Sulfate
sulfur isotopes
barite
Geochemistry
strontium isotope
sulfur isotope
Mexico
geochemistry
Calcium Sulfate
gypsum
Bearings (structural)
Chemical analysis
Rocks
barium
rocks
Barium
isotopic composition

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Strontium and sulfur isotope geochemistry of the Galeana barite district, Nuevo Leon, Mexico. / Kesler, S. E.; Jones, L. M.; Ruiz, Joaquin.

In: Economic Geology, Vol. 83, No. 8, 12.1988, p. 1907-1917.

Research output: Contribution to journalArticle

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