Characteristics of the Cibaliung Gold Deposit: Miocene Low‐Sulfidation‐Type Epithermal Gold Deposit in Western Java, Indonesia

Harijoko, Agung; Ohbuchi, Yukiko; Motomura, Yuki; Imai, Atsushi; Watanabe, Kenji

doi:10.1111/j.1751-3928.2007.00011.x

Cited by 20 publications

(23 citation statements)

References 25 publications

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“…The δD and δ 18 O compositions of fluid delivered from analyses of minerals and fluid inclusions of some Se-bearing deposits from Pongkor, Cibaliung, and Cikidang had values in the ranges of -6.2 to 0.3‰ for δ 18 O, except for quartz samples from Cibaliung is 4.7 to 9.6‰ (Harijoko et al, 2007) and δD in the ranges of -68 to -44‰ (Syafrizal et al, 2007;Harijoko et al, 2007). Phase relation among sulfides, tellurides, selenides, and oxides proposed by Afifi et al (1988a, b), Simon and Essene (1996), and Simon et al (1997) were applied to explain the variations of the physico-chemical condition of the Se-and Te-bearing mineral formation for the western Java ore deposits.…”

Section: Discussionmentioning

confidence: 99%

Diagnostic Genesis Features of Au-Ag Selenide-Telluride Mineralization of Western Java Deposits

Yuningsih¹,

Matsueda²,

Rosana³

2016

Indonesian J. Geosci.

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-The ore mineralogy of the westernmost part of West Java such as Pongkor, Cibaliung, Cikidang, Cikotok, and Cirotan are characterized by the dominance of silver-arsenic-antimony sulfosalt with silver selenides and rarely tellurides over the argentite, whereas the eastern part of West Java including Arinem and Cineam deposits are dominated by silver-gold tellurides. Mineralogy of Se-type deposits at Pongkor, Cikidang, Cibaliung, Cisungsang, and Cirotan and Te-type deposits at Arinem and Cineam shows their different geochemical characteristics. Mineralogical and geochemical differences can be explained by variation of physico-chemical conditions that existed during gold-silver deposition by applying the phase relation among sulfide, telluride, and selenide mineral association in the deposits. The relative values of ƒSe 2(g) , ƒTe (g) , and ƒS 2(g) control the actual presence of selenide or telluride minerals within the West Java deposits, which also depend on their concentrations in the hydrothermal fluid. Even though the concentration of selenium in the hydrothermal fluid of Te-type deposits might have been similar or even higher than that in the Se-type, early substitution of selenium in the sulfide minerals prevents its concentration in the hydrothermal fluid to the levels for precipitating selenide minerals. Therefore, early sulfide mineral deposition from reduction fluids will not increase the ƒSe 2(g) /ƒS 2(g) ratio to form selenide minerals in Te-type deposits of Arinem and Cineam, other than selenium-bearing sulfide mineral such as Se-bearing galena or Se-bearing pyrargyrite-proustite.

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Section: Discussionmentioning

confidence: 99%

Diagnostic Genesis Features of Au-Ag Selenide-Telluride Mineralization of Western Java Deposits

Yuningsih¹,

Matsueda²,

Rosana³

2016

Indonesian J. Geosci.

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“…Rare telluride minerals of hessite and altaite were reported from the Se-type deposit (Harijoko et al, 2007), but until now there are no selenide minerals observed in the Te-type deposits of Arinem, except for the Te-type deposit of Cineam which contains trace of Se-bearing minerals of pyrargyrite-proustite. The occurrences of the ore minerals from the two types of deposits are sum-marized in Table 1 along with other characteristics of those deposits.…”

Section: Ore Mineralogymentioning

confidence: 99%

“…Yuningsih et al) 75 Marcoux and Milesi, 1994;Milesi et al, 1999;Sukarna et al, 1994;Sukarna, 1999;Syafrizal et al, 2005;Syafrizal et al, 2007;Warmada et al, 2003;Warmada et al, 2007;2 Rosana and Matsueda, 2002;3 Angeles et al, 2002;Harijoko et al, 2004;Harijoko et al, 2007;Marcoux and Milesi, 1994;Marjoribanks, 2000;Sudana and Santosa, 1992;4 Rosana et al,…”

Section: J O Gmentioning

confidence: 99%

“…Studies of ore mineralogy and geochemistry were carried out within the epithermal ore deposits of western Java by previous authors such as Pongkor (Basuki et al, 1994;Marcoux and Milesi, 1994;Sukarna et al, 1994;Milesi et al, 1999;Sukarna, 1999;Warmada et al, 2003;Syafrizal et al, 2005;Syafrizal et al, 2007;Warmada et al, 2007), Cikidang (Rosana and Matsueda, 2002), Cibaliung (Sudana and Santosa, 1992;Marcoux and Milesi, 1994;Marjoribanks, 2000;Angeles et al, 2002;Harijoko et al, 2004;Harijoko et al, 2007), Cisungsang (Rosana et al, 2006), Cirotan , Arinem (Yuningsih et al, 2012), and Cineam (Widi and Matsueda, 1998).…”

Section: Introductionmentioning

confidence: 99%

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Epithermal Gold-Silver Deposits in Western Java, Indonesia: Gold-Silver Selenide-Telluride Mineralization

Yuningsih¹,

Matsueda²,

Rosana³

2014

Indonesian J. Geosci.

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-The gold-silver ores of western Java reflect a major metallogenic event during the Miocene-Pliocene and Pliocene ages. Mineralogically, the deposits can be divided into two types i.e. Se-and Te-type deposits with some different characteristic features. The objective of the present research is to summarize the mineralogical and geochemical characteristics of Se-and Te-type epithermal mineralization in western Java. Ore and alteration mineral assemblage, fluid inclusions, and radiogenic isotope studies were undertaken in some deposits in western Java combined with literature studies from previous authors. Ore mineralogy of some deposits from western Java such as Pongkor, Cibaliung, Cikidang, Cisungsang, Cirotan, Arinem, and Cineam shows slightly different characteristics as those are divided into Se-and Te-types deposits. The ore mineralogy of the westernmost of west Java region such as Pongkor, Cibaliung, Cikidang, Cisungsang, and Cirotan is characterized by the dominance of silver-arsenic-antimony sulfosalt with silver selenides and rarely tellurides over the argentite, while to the eastern part of West Java such as Arinem and Cineam deposits are dominated by silver-gold tellurides. The average formation temperatures measured from fluid inclusions of quartz associated with ore are in the range of 170 -220°C with average salinity of less than 1 wt% NaCl equiv. for Se-type and 190 -270°C with average salinity of ~2 wt% NaCl equiv. for Te-type.

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“…Data for the neighboring epithermal vein deposits, Pongkor (Basuki et al, 1994), Cibaliung (Harijoko et al, 2007), and Cikidang (Rosana and Matsueda, 2002) are plotted for comparison. Some examples of AuTe bearing deposits from elsewhere, such as Creede (Bethke et al, 1973), Sunnyside (Casadevall andOhmoto, 1977), Emperor (Ahmad et al, 1987), and Tongyoung (Shelton et al, 1990) are also shown in the boxes.…”

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confidence: 99%

Genesis and origin of Te–bearing gold–silver–base metal mineralization of the Arinem deposit in western Java, Indonesia

Yuningsih

Matsueda

2014

Journal of Mineralogical and Petrological Sciences

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The Arinem deposit is an epithermal-type, gold-silver-base metal mineralization, hosted by the Arinem vein system which cross-cut volcanic rocks of Oligocene to Miocene age. There are three main stages (I to III) of ore mineralization in quartz-illite-calcite veining. The physico-chemical conditions and the origin of the hydrothermal fluids in the Arinem deposit are examined. We find the f S2 to have decreased from~10 −8 to 10 −16 atm and the f Te2 to have increased from~10 −15 to 10 −8 atm with decreasing temperature of ore fluids during mineralization. Oxygen (δ 18 O), hydrogen (δD), and sulfur (δ 34 S) isotopic values as derived from quartz, fluid inclusions, and sulfides in the mineralized veins range −6.0 to −1.7‰, −66 to −34‰, and −3.6 to −1.8‰, respectively. The sulfur isotope values indicate that sulfur was mostly derived from a magmatic source, whereas the oxygen and hydrogen isotope values suggest an influx of meteoric water into the hydrothermal system. As a consequence of the mixing of magmatic and meteoric waters and changes in the physico-chemical conditions of the ore fluids (i.e., ore fluid temperature and chemistry), higher temperature mineralization was triggered during stage I, followed by lower temperature mineralization during stage II. Continued influx of meteoric water may have caused the ore fluids to become oversaturated, resulting in the precipitation of unmineralized stage III veins.

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Characteristics of the Cibaliung Gold Deposit: Miocene Low‐Sulfidation‐Type Epithermal Gold Deposit in Western Java, Indonesia

Cited by 20 publications

References 25 publications

Diagnostic Genesis Features of Au-Ag Selenide-Telluride Mineralization of Western Java Deposits

Diagnostic Genesis Features of Au-Ag Selenide-Telluride Mineralization of Western Java Deposits

Epithermal Gold-Silver Deposits in Western Java, Indonesia: Gold-Silver Selenide-Telluride Mineralization

Genesis and origin of Te–bearing gold–silver–base metal mineralization of the Arinem deposit in western Java, Indonesia

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