Textures and trace element composition of pyrite from the Bukit Botol volcanic-hosted massive sulphide deposit, Peninsular Malaysia

Mohd Basril Iswadi Basori, Sarah Gilbert, Ross Raymond Large, Khin Zaw

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The Bukit Botol volcanic-hosted massive sulphide (VHMS) deposit is located in the Central Belt of Peninsular Malaysia. The deposit occurs in a package of Permian-aged coherent felsic volcanic and volcaniclastic rocks which have a geochemical signature indicative of a volcanic arc tectonic setting. Mineralisation shows distinct ore zonation, forming a stringer to massive sulphide zone at the footwall followed by barite lenses and exhalite layers (Fe-Mn ore) at the top. Mineralogy is characterised by pyrite as the major sulphide mineral, with minor chalcopyrite, sphalerite, and rare galena; traces of gold, silver- and tin-bearing minerals also occur in the massive sulphide and barite ores. Laser ablation inductively coupled plasma mass spectrometry (LA−ICP−MS) analysis combined with the textural characteristics of pyrite provides evidence for significant variations of trace elements in different pyrite types at Bukit Botol, having three types of pyrite in the paragenetic sequence. The concentrations of As, Se, Te, Cu, Zn and Pb decrease from the early pyrite 1 to the late stage pyrite 3, and the Co/Ni ratios vary for the three pyrite types. The combined textural and compositional data of pyrite suggest that the hydrothermal fluid responsible for mineralisation evolved from an early, high temperature, reduced, low pH and desulphurized fluid to more S-rich, oxidized, high pH and cooler fluid. Available sulphur isotope data from the Bukit Botol deposit point to reduced seawater, along with a possible magmatic contribution, as the most probable sources for the ore-forming fluids.

Original languageEnglish
Pages (from-to)173-185
Number of pages13
JournalJournal of Asian Earth Sciences
Volume158
DOIs
Publication statusPublished - 1 Jun 2018
Externally publishedYes

Fingerprint

massive sulfide
pyrite
texture
trace element
barite
mineralization
ore-forming fluid
fluid
sulfur isotope
mineral
footwall
galena
sphalerite
tin
hydrothermal fluid
chalcopyrite
ablation
tectonic setting
zonation
island arc

Keywords

  • Massive sulphide deposit
  • Mineral chemistry
  • Peninsular Malaysia
  • Pyrite

ASJC Scopus subject areas

  • Geology
  • Earth-Surface Processes

Cite this

Textures and trace element composition of pyrite from the Bukit Botol volcanic-hosted massive sulphide deposit, Peninsular Malaysia. / Basori, Mohd Basril Iswadi; Gilbert, Sarah; Large, Ross Raymond; Zaw, Khin.

In: Journal of Asian Earth Sciences, Vol. 158, 01.06.2018, p. 173-185.

Research output: Contribution to journalArticle

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