https://buletinsdg.geologi.esdm.go.id/index.php/bsdg/issue/feed 2024-11-20T11:50:07+00:00 Denni Widhiyatna dennipmg@gmail.com Open Journal Systems <p>The Geological Resources Bulletin (Buletin Sumber Daya Geologi) is a LIPI-accredited scientific journal covering the fields of minerals, fossil energy, and geothermal energy. It is published three times a year, in May, August, and November.</p> <p>In 2010, the Geological Resources Bulletin received Accreditation B as a scientific journal, which was renewed in 2012. The most recent accreditation, granted in 2015, was valid for three years, with the ISSN (print) number: 1907-5367. In 2017, the bulletin was assigned the eISSN number: 2580-1023 for its online edition.</p> <p>In 2018, the Geological Resources Bulletin was awarded a Rank 2 accreditation by the Ministry of Research, Technology, and Higher Education as a Scientific Journal. This ranking was reaffirmed in 2020, with the accreditation valid for the next five years.</p> <div class="O1">&nbsp;</div> <div class="O1"><strong><em>DOI Prefix: 10.47599</em></strong></div> https://buletinsdg.geologi.esdm.go.id/index.php/bsdg/article/view/BSDG_VOL_19_NO_3_2024_1 2024-11-20T11:50:07+00:00 Nadya Finlandini nadyafinlandini@gmail.com Sabtanto Joko Suprapto sabtanto_js@yahoo.com Asep M I Shiddiq asep.shiddiq@esdm.go.id Lia Novalia lianovaagung@gmail.com Muhammad Syafrudin Anshar muhammadsyafrudinanshar@gmail.com

<p><em>The research is located in Cihaur, Sukabumi, West Java, occupied by the Jampang Formation, located in the Sunda-Banda Arc. The magmatic activity and complex tectonic setting in the arc have the potential to cause mineralization, resulting in several types of ore deposits such as porphyry, epithermal and skarn. The objectives of this research are to identify alteration, mineralization, and ore deposit types in the research area. The research methodology includes exploration drilling, alteration mapping, and laboratory analysis using XRD, petrography, and mineragraphy methods. Alteration of the research area consists of argillic alteration (illite, kaolin, and smectite), propylitic alteration (chlorite, epidote, and calcite), marbellized (95% calcite), and skarnization (clinopyroxene, wollastonite, chlorite-skarn, and epidote-skarn). In the skarn there are indications of a prograde stage characterized by pyroxene and wollastonite minerals, and a retrograde stage characterized by epidote, calcite, and chlorite minerals. Mineralization of the research area consists of galena, sphalerite, pyrrhotite, pyrite, and chalcopyrite. The presence of pyroxene and wollastonite minerals, as well as galena and sphalerite indicate that the skarn formed in the intermediate to distal zone.</em></p>

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