Studi geomorfologi dengan karakteristik laterisasi pada karakteristik endapan nikel laterit daerah “axzâ€, kota maba, Halmahera Timur, Maluku Utara
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File Repositori
Penerbit : FTKE - Usakti
Kota Terbit : Jakarta
Tahun Terbit : 2026
Pembimbing 1 : Mira Meirawaty
Subyek : Laterite;Geomorphology
Kata Kunci : nickel; laterite deposits; morphology; slope; laterization
Status Posting : Published
Status : Lengkap
File Repositori
| No. | Nama File | Hal. | Link |
|---|---|---|---|
| 1. | 2026_SK_STG_072002000006_Halaman-Judul.pdf | 18 | |
| 2. | 2026_SK_STG_072002000006_Surat-Pernyataan-Revisi-Terakhir.pdf | 1 | |
| 3. | 2026_SK_STG_072002000006_Surat-Hasil-Similaritas.pdf | 1 | |
| 4. | 2026_SK_STG_072002000006_Halaman-Pernyataan-Persetujuan-Publikasi-Tugas-Akhir-untuk-Kepentingan-Akademis.pdf | 1 | |
| 5. | 2026_SK_STG_072002000006_Lembar-Pengesahan.pdf | 1 | |
| 6. | 2026_SK_STG_072002000006_Pernyataan-Orisinalitas.pdf | 1 | |
| 7. | 2026_SK_STG_072002000006_Formulir-Persetujuan-Publikasi-Karya-Ilmiah.pdf | 1 | |
| 8. | 2026_SK_STG_072002000006_Bab-1.pdf | ||
| 9. | 2026_SK_STG_072002000006_Bab-2.pdf |
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| 10. | 2026_SK_STG_072002000006_Bab-3.pdf |
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| 11. | 2026_SK_STG_072002000006_Bab-4.pdf |
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| 12. | 2026_SK_STG_072002000006_Bab-5.pdf | 2 | |
| 13. | 2026_SK_STG_072002000006_Daftar-Pustaka.pdf | 7 | |
| 14. | 2026_SK_STG_072002000006_Lampiran.pdf |
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N Nikel merupakan salah satu sumberdaya alam yang memiliki banyak manfaatuntuk berbagai jenis produk lainnya, keserbagunaan ini pula yang menjadikan nikelsangat berharga dan memiliki nilai jual tinggi di pasar dunia, keberadaan endapannikel laterit umumnya banyak tersebar di wilayah timur indonesia, antara lain diterdapat di halmahera timur, halmahera tengah, selain di wilayah sulawesiselatan, sulawesi tengah, serta sulawesi tenggara. penelitian ini dilakukan di pt.antam tbk yang terletak di halmahera timur, maluku utara bertujuan untukmengetahui hubungan morfologi dengan karakteristik laterisasi terhadap endapannikel laterit. metodologi penelitian dilakukan dengan studi pustaka, pemetaanlapangan, analisis geomorfologi, litologi, struktur geologi, ketebalatan laterit, sertaanalisis kadar ni, co, fe2o3, sio2, mgo, dan al2o3. geomorfologi daerahpenelitian terbagi menjadi satuan geomorfologi bukit curam, satuan geomorfologibukit terjal, dan satuan geomorfologi dataran landai, dengan satuan lherzolit dandunit yang mengisi satuan geologi daerah penelitian yang merupakan formasibatuan ultrabasa. struktur geologi daerah penelitian beruka rekahan yang memilikiorientasi relatif barat laut – tenggara lalu timur laut-barat daya. endapan lateritdaerah penelitian terdiri dari zona top soil, limonit, saprolit, dan batuan induk yangtermasuk kedalam tipe endapan hidrosilikat, dengan ketebalan zona saprolit lebihtinggi dari zona limonit dan top soil. hubungan kelerengan lebih representatifdibandingkan kondisi morfologi dalam melihat sebaran nikel laterit, dapat terlihatpada semakin curam lereng maka semakin tebal zona saprolitnya dibandingkanpada kelerengan lebih landai serta semakin terjal lereng maka endapan lateritmenjadi semakin tipis, dimana unsur ni mengalami pengkayaan di zona saprolitelalu unsur lalu unsur co mengalami pengkayaan di zona limonit sedangkan unsurfe mengalami pengkayaan di zona top soil. laterisasi dan proses pelapukan palingberkembang pada kelerengan curam serta endapan laterit yang lebih tebal. hasilpenelitian ini diharapkan dapat menjadi acuan dalam kegiatan eksplorasi dan evaluasiendapan nikel laterit di wilayah serupa.
N Nickel is a natural resource that has many benefits for various other types ofproducts, this versatility also makes nickel very valuable and has a high sellingvalue in the world market, the existence of laterite nickel deposits is generallyspread in eastern indonesia, including in east halmahera, central halmahera, inaddition to the regions of south sulawesi, central sulawesi, and southeastsulawesi. this research was conducted at pt. antam tbk located in easthalmahera, north maluku aims to determine the relationship between morphologyand laterization characteristics of laterite nickel deposits. the researchmethodology was carried out by literature study, field mapping, geomorphologicalanalysis, lithology, geological structure, laterite thickness, and analysis of ni, co,fe2o3, sio2, mgo, and al2o3 levels. the geomorphology of the research area isdivided into steep hill geomorphological units, steep hill geomorphological units,and sloping plain geomorphological units, with lherzolite and dunite units fillingthe geological units of the research area which are ultramafic rock formations. thegeological structure of the research area is fractured with a relatively northwestsoutheast orientation and then northeast-southwest. the laterite deposits in theresearch area consist of topsoil, limonite, saprolite, and host rock zones that areincluded in the hydrosilicate deposit type, with the thickness of the saprolite zonebeing higher than the limonite and topsoil zones. the slope relationship is morerepresentative than the morphological conditions in viewing the distribution ofnickel laterite, as can be seen in the steeper slope, the thicker the saprolite zonecompared to gentler slopes and the steeper the slope, the thinner the lateritedeposits become, where the ni element experiences enrichment in the saprolitezone, then the co element experiences enrichment in the limonite zone, while thefe element experiences enrichment in the topsoil zone. laterization and weatheringprocesses are most developed on steeper slopes and thicker laterite deposits. theresults of this study are expected to be a reference in exploration and evaluationactivities of nickel laterite deposits in similar areas.
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