AJI, BAGUS TRI SETIA (2023) GEOLOGI DAN HUBUNGAN TINGKAT PELAPUKAN TERHADAP KADAR Ni PADA ZONA LATERIT DENGAN CHEMICAL INDEX OF WEATHERING DI DAERAH TAPUNOPAKA, KECAMATAN LASOLO KEPULAUAN, KABUPATEN KONAWE UTARA, PROVINSI SULAWESI TENGGARA. Other thesis, UPN "Veteran" Yogyajarta.
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Abstract
v
SARI
Oleh :
BAGUS TRI SETIA AJI
111.190.117
Daerah penelitian berada dalam IUP PT.Antam yang secara administratif
berada di Desa Tapunopaka, Kecamatan Lasolo Kepulauan, Kabupaten
Konawe Utara, Provinsi Sulawesi Tenggara. Penelitian bertujuan untuk
mengetahui pengaruh tingkat pelapukan terhadap kadar Ni pada zona laterit
dengan Chemical Index of Weathering (CIW) pada lubang bor BG-2, BG-6,
dan BG-20. Tingkat pelapukan diperoleh dengan perhitungan secara kuantitatif
dengan persamaan yang dikembangkan oleh Harnois pada tahun 1988. Hasil
analisis profil geokimia, didapatkan unsur Fe, Al2O3, dan Co kandunganya
tinggi pada zona limonit, SiO2 dan MgO memiliki kandungan tinggi Ketika
semakin mendekati zona batuan dasar, sedangkan Ni pengayaan nya berada
pada zona saprolit. Pada BG-2 memiliki ketebalan zona limonit 8 meter dengan
kadar Ni 1,14%, zona saprolit 9 meter dengan kadar Ni 1,60% dan batuan dasar
3 meter dengan kadar Ni 1,23%, BG-6 memiliki ketebalan zona limonit 5
meter dengan kadar Ni 1,11%, zona saprolit 7 meter dengan kadar Ni 1,43%,
dan batuan dasar 2 meter dengan kadar Ni 1,12%, dan BG-20 memiliki
ketebalan zona limonit mencapai 11 meter dengan kadar Ni 1,52%, dan
ketebalan zona saprolitnya 14 meter dengan kadar 2,25%. Pelapukan yang
bekerja pada ketiga lubang bor berbanding lurus dengan peningkatan kadar Ni
sesuai dengan diagram scatter plot dan berpengaruh terhadap penebalan zona
limonit dan saprolit. Selain itu berpengaruh terhadap tingkah laku
unsur/senyawa, minerat, dan apa yang ada pada zona limonit dan saprolit
Kata kunci : Zona laterit, Chemical Index of Weathering, kadar, scatter plot
GEOLOGI DAN HUBUNGAN TINGKAT PELAPUKAN TERHADAP
KADAR Ni PADA ZONA LATERIT DENGAN CHEMICAL INDEX
OF WEATHERING DI DAERAH TAPUNOPAKA, KECAMATAN
LASOLO KEPULAUAN, KABUPATEN KONAWE UTARA,
PROVINSI SULAWESI TENGGARA
vi
ABSTRACT
Arranged By :
BAGUS TRI SETIA AJI
111.190.117
The research area is within the PT Antam IUP which is administratively
located in Tapunopaka Village, Lasolo Islands District, North Konawe
Regency, Southeast Sulawesi Province. The research aims to determine the
effect of weathering level on Ni content in the laterite zone with Chemical
Index of Weathering (CIW) in drill holes BG-2, BG-6, and BG-20. The level of
weathering was obtained by quantitative calculations using the equation
developed by Harnois in 1988. The results of the geochemical profile analysis
showed that the elements Fe, Al2O3, and Co content is high in the limonite
zone, SiO2 and MgO has a high content when getting closer to the bedrock
zone, while the Ni enrichment is in the saprolite zone. In BG-2, the limonite
zone is 8 meters thick with a Ni rate of 1.14%, the saprolite zone is 9 meters
with a Ni rate of 1.60% and the bedrock is 3 meters with a Ni rate of 1.23%,
BG-6 has a limonite zone thickness of 5 meters with a Ni rate of 1.11%,
saprolite zone 7 meters with a Ni rate of 1.43%, and bedrock 2 meters with a
Ni rate of 1.12%, and BG-20 has a thickness of limonite zone reaching 11
meters with a Ni rate of 1, 52%, and the thickness of the saprolite zone is 14
meters with a rate of 2.25%. The weathering that works on the three boreholes
is directly proportional to the increase in Ni content according to the diagram
scatter plot and influencing the thickening of limonite and saprolite zones. In
addition, it influences the behavior of elements/compounds, minerals, and what
is in the limonite and saprolite zones
Keywords :laterit zone,Chemical Index of Weathering, much,scatter plot
GEOLOGY AND THE RELATIONSHIP OF WEATHERING LEVEL
TO Ni CONTENTS IN THE LATERITE ZONE WITHCHEMICAL
INDEX OF WEATHERING IN THE TAPUNOPAKA REGION,
LASOLO KEPULAUAN DISTRICT, NORTH KONAWE DISTRICT,
SOUTHEAST SULAWESI PROVINCE
Item Type: | Thesis (Other) |
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Uncontrolled Keywords: | Zona laterit, Chemical Index of Weathering, kadar, scatter plot |
Subjects: | Q Science > QE Geology |
Divisions: | Faculty of Engineering, Science and Mathematics > School of Geography |
Depositing User: | Eko Yuli |
Date Deposited: | 26 Oct 2023 02:44 |
Last Modified: | 26 Oct 2023 02:44 |
URI: | http://eprints.upnyk.ac.id/id/eprint/38056 |
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