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Salu Bullo gold mine, Tana Toraja Regency, Sulawesi Selatan Province (South Sulawesi Province), Sulawesi (Celebes), Indonesia

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Latitude & Longitude (WGS84): 3° 21' 43'' South , 120° 6' 44'' East
Latitude & Longitude (decimal): -3.36222,120.11250
Age:100.5 to 2.588 Ma
Geologic Time:Phanerozoic : Late Cretaceous to Pliocene
Dating method:U-Pb
Reference for age:White, L. T., Hall, R., Armstrong, R. A., Barber, A. J., BouDagher Fadel, M., Baxter, A., Wakita, K., Manning, C. & Soesilo, J. (2017). The geological history of the Latimojong region of western Sulawesi. Journal of Asian Earth Sciences, 138 72-9
Köppen climate type:Af : Tropical rainforest climate
Name(s) in local language(s):Salu Bullo
Other/historical region names associated with this locality:Salu Bullo


The Salu Bullo gold deposit are situated in the Latimojong Metamorphic Complex, Sulawesi, Indonesia. These deposits are hosted in pumpellyite- to greenschist-facies metasedimentary and metavolcanic rocks. Total gold contents are estimated at 6.1 Mt at 2.1 ppm Au.

Gold occurs primarily as fracture filling within early sulfides and as round cogenetic inclusions within sulfides, mainly in pyrite. All microscopically visible gold occurs as inclusion or as crack filling rather than as free grains in quartz. Grain sizes of gold (Au85-88Ag12-15) range from submicroscopic (<2 µm) to 30 µm. In addition, mineralized veins contain chalcopyrite and fahlore assemblages, often associated with covellite, galena, sphalerite, and marcasite. A Cu-Ag-As-Sb-(Hg) mineral association comprising tetrahedrite, luzonite/famatinite, and acanthite, is frequently associated with gold-bearing veins. Mercury is present as a minor element in tetrahedrite intergrown with chalcopyrite and pyrite; some samples carry mercurian tetrahedrite with up to 17.28 wt% Hg.


Mineral List


40 valid minerals.

Regional Geology

This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.

Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org

Pliocene - Miocene
2.588 - 23.03 Ma



ID: 1377819
Miocene-Pliocene mixed volcanic, volcaniclastic and sedimentary rocks

Age: Neogene (2.588 - 23.03 Ma)

Comments: This designation includes Precambrian iron-formation-bearing sedimentary and volcanic sequences, as well as mixed sedimentary and volcanic or volcaniclastic sequences.

Lithology: Mixed volcanic, volcaniclastic and sedimentary rocks

Reference: Geological Survey of Canada. Generalized geological map of the world and linked databases. doi:10.4095/195142. Open File 2915d. [18]

Data and map coding provided by Macrostrat.org, used under Creative Commons Attribution 4.0 License



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References

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Hakim, A.Y.A. (2017) Genesis of orogenic gold in the Latimojong district, South Sulawesi, Indonesia. PhD dissertation. Montanuniversität Leoben Austria.
Hakim, A.Y.A., Melcher, F., Prochaska, W., Bakker, R.J., Rantitsch, G. (2017) The origin and evolution of fluids associated with gold deposits in the basement of Sulawesi, Indonesia. Proceedings of the 14th SGA Biennial Meeting, 20-23 August 2017, Québec City, Canada:355–358. doi: 10.13140/RG.2.2.13179.41767.
Hakim, A., Melcher, F. (2017) Timing of mineralization and origin of hydrothermal carbonate at the gold deposits within the Latimojong Complex, Indonesia. 2nd Postgraduate conference on Geology of Ore Deposits. Hannover.:22 (abstract).
Hakim, A.Y.A., Melcher, F. (2017) Magmatic chromian spinel in metabasite from the Latimojong Mountains, Sulawesi, Indonesia. Mitteilungen der Österreichischen Mineralogischen Gesellschaft 163:42 (abstract).
Hakim, A.Y.A., Melcher, F. (2016) The composition of gold and mercurian rich tetrahedrite from the sedimentary hosted disseminated gold in Latimojong mountain, South Sulawesi, Indonesia. 1st Postgraduate conference on Geology of Ore Deposits. Freiberg:12.
Hakim, A.Y.A., Melcher, F. (2016) The Sallu Bulo Mesothermal Gold Deposit in South Sulawesi, Indonesia. GeoTirol 2016:98 (abstract).

 
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