Article
Analisis Mineral Magnetik Batuan dengan Metode Anisotropi Susceptibility Magnetik (AMS): Analysis of Magnetic Minerals in Rocks Using the Anisotropy Of Magnetic Susceptibility (AMS) Method
Einstein's: Research Journal of Applied Physics, Vol. 4 No. 1 (2026), hlm. 31–33
Abstrak
This research was conducted in several regions in Indonesia. The purpose of the research was to determine magnetic minerals in rocks using the AMS method. This research used a literature review method by tracing and collecting data related to the research. The results of the research from magnetic susceptibility data using the MS2B Bartington Susceptibility Meter showed that the susceptibility anisotropy value had a magnetic mineral value in igneous rocks that was relatively anisotropic with a percentage degree and ANBW specimens were found to be magnetically stronger than DINJ specimens. Specimens at both locations were suitable for paleomagnetism studies because they were magnetically quite isotropic with an anisotropy percentage far below 10%. In ultrabasic igneous rocks, it shows that the analyzed rock samples had a low degree of anisotropy. Rock samples with an anisotropy percentage of 10% and volcanic rocks of Mount Merapi where the anisotropic degree for samples varied from 0.91% to 11.4%. Samples that were considered quite stable (having an anisotropic degree of less than 6%). Meanwhile, in iron sand, most of the magnetic changes into hematite where the susceptibility value decreases by around 95.0%, and in the rock replica test material using Aniso20 software, the average parameter value shows that the anisotropy of the test material is not significant or in other words, it is close to isotropic.