Petrology and geochemistry of rhyolites associated with tin mineralization in northern Mexico.

J. R. Huspeni, S. E. Kesler, Joaquin Ruiz, Z. Tuta, J. F. Sutter, L. M. Jones

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Tin deposits of the Mexican tin belt consist of cassiterite and wood tin filling fractures and faults in rhyolite flows and domes (host rhyolite), and coating fragments and disseminated in the matrix of rhyolitic ignimbrites overlying the host rhyolites. The host rhyolites are metaluminous or slightly peraluminous high- silica rhyolites, contain more Sn and F than associated rhyolites lacking Sn deposits, and are more radioactive than average for the Sierra Madre Occidental volcanic rocks. Chemical data indicate that the 'tin rhyolites' formed as extreme differentiates in high-level magma chambers closely related to caldera development. Crustal contribution may account for some Sn or F enrichment in the parent magmas, but differentiation was the major factor in concentrating Sn in the host rhyolites. The Mexican tin belt clearly formed from highly differentiated magmas that were an integral part of the Oligocene Sierra Madre Occidental volcanic pile, but restricted to its eastern flank. -G.J.N.

Original languageEnglish (US)
Pages (from-to)87-105
Number of pages19
JournalEconomic Geology
Volume79
Issue number1
DOIs
StatePublished - 1984
Externally publishedYes

Fingerprint

Petrology
petrology
Geochemistry
Tin
Mexico
geochemistry
tin
mineralization
rhyolite
Tin deposits
volcanology
Volcanic rocks
deposits
Domes
cassiterite
Silicon Dioxide
calderas
igneous rocks
Piles
concentrating

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

Petrology and geochemistry of rhyolites associated with tin mineralization in northern Mexico. / Huspeni, J. R.; Kesler, S. E.; Ruiz, Joaquin; Tuta, Z.; Sutter, J. F.; Jones, L. M.

In: Economic Geology, Vol. 79, No. 1, 1984, p. 87-105.

Research output: Contribution to journalArticle

Huspeni, J. R. ; Kesler, S. E. ; Ruiz, Joaquin ; Tuta, Z. ; Sutter, J. F. ; Jones, L. M. / Petrology and geochemistry of rhyolites associated with tin mineralization in northern Mexico. In: Economic Geology. 1984 ; Vol. 79, No. 1. pp. 87-105.
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