Textural variation and tin mineralization in granites from the main range province of the Southeast Asian Tin Belt

✍ Scribed by P. E. J. Pitfield; L. H. Teoh; E. J. Cobbing

• Publisher: John Wiley and Sons
• Year: 1990
• Tongue: English
• Weight: 822 KB
• Volume: 25
• Category: Article
• ISSN: 0072-1050
• DOI: 10.1002/gj.3350250324

✦ Synopsis

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.