Electronic Theses and Dissertation

Kecamatan Kuta Cot Glie tersusun oleh Formasi Meucampli (Tlm), Kompleks
Indrapuri (Tuic), dan Formasi Seulimeum (QTps), yang merepresentasikan
keberadaan batuan beku intermediet hingga ultramafik, serta batuan sedimen dan
metamorf yang secara geologi berpotensi berasosiasi dengan mineral ekonomis.
Penelitian ini bertujuan untuk mengidentifikasi kondisi geologi serta menganalisis
potensi mineral melalui pemetaan litologi, struktur geologi, dan geomorfologi.
Metode yang digunakan meliputi pemetaan geologi, analisis petrografi, serta
analisis geokimia menggunakan metode XRF dan ICP-MS. Integrasi data lapangan
dan laboratorium tersebut menjadi dasar dalam penilaian awal potensi mineral di
wilayah penelitian. Secara geomorfologi, daerah penelitian terdiri Satuan Struktural
dengan bentuk lahan struktural (S1) dan bentuk lahan struktural (S3), Satuan
Fluvial dengan bentuk lahan tubuh/dasar sungai (F1) dan bentuk lahan zona point
bar (F4), serta Satuan Denudasional dengan bentuk lahan perbukitan dan lereng
terkikis (D1). Pola aliran sungai yang berkembang di daerah penelitian berupa pola
aliran trellis dan contorted. Hasil analisis litologi, daerah penelitian tersusun atas
empat satuan batuan, yaitu Satuan Basal (Tlmb), Satuan Andesit (Tlma), Satuan
Serpentinit (Tuic), dan Satuan Batupasir Karbonatan (QTps) yang diinterpretasikan
lingkungan pengendapan laut dangkal (shallow marine). Hasil analisis potensi
mineral ekonomis pada sampel Top Soil, Lapisan B, Vein-1, Vein-2, Lapisan C, dan
Lapisan D menunjukkan adanya pengkayaan unsur-unsur logam, unsur jejak (trace
elements), serta unsur tanah jarang (Rare Earth Elements). Selain itu, asosiasi
mineral sulfida kalkopirit, pirit, bornit, dan galena. Kehadiran mineral sekunder
malakit dan azurit menunjukkan bahwa mineral sulfida primer telah mengalami
proses oksidasi supergen pada kondisi dekat permukaan.
Kata kunci : ICP-MS, Kuta Cot Glie, Litologi, Petrografi, Potensi Mineral, XRF

Kuta Cot Glie District is composed of the Meucampli Formation (Tlm), the Indrapuri Complex (Tuic), and the Seulimeum Formation (QTps), representing the occurrence of intermediate to ultramafic igneous rocks, as well as sedimentary and metamorphic rocks that are geologically associated with economically valuable mineralization. This study aims to identify the geological characteristics and evaluate the mineral potential through lithological, structural, and geomorphological mapping. The research methods include geological mapping, petrographic analysis, and geochemical analysis using X-Ray Fluorescence (XRF) and Inductively Coupled Plasma–Mass Spectrometry (ICP-MS). The integration of field observations and laboratory analyses provides the basis for a preliminary assessment of the mineral potential within the study area. Geomorphologically, the study area consists of Structural Units, including Structural Landform (S1) and Structural Landform (S3); Fluvial Units, comprising River Channel/Floor Landform (F1) and Point Bar Landform (F4); and Denudational Units, represented by Eroded Hills and Slopes (D1). The drainage pattern developed in the study area is characterized by trellis and contorted drainage patterns. Lithological analysis indicates that the area is composed of four rock units: Basalt Unit (Tlmb), Andesite Unit (Tlma), Serpentinite Unit (Tuic), and Carbonate Sandstone Unit (QTps), which are interpreted to have been deposited in a shallow marine environment. The analysis of the economic mineral potential from the Top Soil, Layer B, Vein-1, Vein-2, Layer C, and Layer D samples indicates the enrichment of metallic elements, trace elements, and Rare Earth Elements (REEs). In addition, sulfide mineral associations consisting of chalcopyrite, pyrite, bornite, and galena were identified. The occurrence of the secondary minerals malachite and azurite indicates that the primary sulfide minerals have undergone supergene oxidation under near-surface conditions. Keywords: ICP-MS, Kuta Cot Glie, Lithology, Petrography, Mineral Potential, XRF.