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Textural variation and tin mineralization in granites from the main range province of the Southeast Asian Tin Belt
Author(s) -
Pitfield P. E. J.,
Teoh L. H.,
Cobbing E. J.
Publication year - 1990
Publication title -
geological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.721
H-Index - 54
eISSN - 1099-1034
pISSN - 0072-1050
DOI - 10.1002/gj.3350250324
Subject(s) - greisen , geology , tin , geochemistry , mineralization (soil science) , hydrothermal circulation , feldspar , mineralogy , metallurgy , materials science , fluid inclusions , quartz , paleontology , soil science , soil water , seismology
Textural evolution from coarse K‐feldspar megacrystic granite, through heterogeneous granite porphyry to microgranite corresponds to a sequence of geochemical evolution. It was probably triggered by a sudden loss of pressure, resulting in quenching, fluidization, and disruptive emplacement of the residual melt into the partially or wholly crystalline host granite. It was accompanied by alkali metasomatism, volatile‐fluxing, and hydrothermal alteration, culminating in the formation of greisen bordered vein swarms and massive greisens mineralized with tin and other metals.