Conference Management System
Main Site
Submission Guide
User List | Statistics
Abstract List | Statistics
Paper List
Presentation Video
Online Q&A Forum
Access Mode
Ifory System
:: Abstract ::

<< back

Geology and hydrothermal alteration of Tambulun Cu-Au skarn prospect in Sulit Air area, Solok district, West Sumatra province, Indonesia
Afrilita, Arifudin Idrus* and I Wayan Warmada

Department of Geological Engineering, Universitas Gadjah Mada, Yogyakarta, Indonesia
*Corresponding author: arifidrus[at]


Study area is located at Tambulun copper-gold skarn prospect and its vicinity in Sulit Air area, Solok district, West Sumatra, Indonesia. The prospect has been known for a long time, however, detailed study on alteration and ore mineralization characteristics is not done yet. This study, therefore, is dealing with geological framework and characteritics of mineralogy, and geochemistry of the skarn prospect. Surface geological and alteration mapping as well as various laboratory analyses including petrography, ore microscopy, FA-AAS and ICP-MS of selected samples taken were performed. Skarn alteration and mineralization mostly occurs along the contact between Triassic crytalline limestone of Tuhur Formation and Jurassic granodiorite of Sulit Air granitoid suite. Ore mineralization is structurally controlled by WNW-ESE dextral slip-fault and NE-SW, N-S sinistral slip faults. Skarn alteration is zoned upon intrusions from proximal to distal consisting of garnet-pyroxene, pyroxene-garnet and chlorite-epidote zones. Silicified (quartz-clinopyroxene) alteration is also locally observed. Copper bearing sulfides such as bornite and chalcopyrite as well as supergene products such as chalcocite, covellite, chrysocolla, azurite and malachite are intimately associated with proximal garnet-pyroxene zone. Ore mineralization shows elevated grades of 20.9% Cu, 8.02 g/t Au and 573 g/t Ag, respectively, and they show a positive correlation. Those preliminary data exhibit that the skarn prospect seems to be promising to be followed-up for the next-step systematic exploration.

Keywords: skarn, copper, gold, Tambulun, Sulit Air, West Sumatra, Indonesia

Topic: Material Science and Health Community Services

Plain Format | Corresponding Author (Afrilita Afrilita)

Share Link

Share your abstract link to your social media or profile page

GIESED 2020 - Conference Management System

Powered By Konfrenzi Premium 1.832L-Build7 © 2007-2022 All Rights Reserved