PROBABILITAS MINERAL PASIR BESI TITAN YOGYAKARTA BERDASARKAN STUDI pXRF
DOI:
https://doi.org/10.30556/jtmb.Vol16.No1.2020.1064Kata Kunci:
pasir besi titan, pXRF, mineral bijih, mineral non-bijih, probabilitasAbstrak
Pasir besi titan dari Yogyakarta dikarakterisasi menggunakan portable x-ray fluorescence (pXRF) dengan algoritma soil (W-tube, 40 kV) dan alloy (Rh-tube, 50 kV). Hasil karakterisasi menggunakan algoritma soil menunjukkan kandungan unsur-unsur Fe (19,71 wt.%), Ca (5,86 wt.%), Ti (2,64 wt.%), K (0,84 wt.%) dan light elements (70,13 wt.%), sedangkan hasil karakterisasi menggunakan algoritma alloy menunjukkan kandungan unsur-unsur Fe (52,5 wt.%), Si (32,7 wt.%), Al (9,1 wt.%) dan Ti (4,74 wt.%). Analisis mineral berbasis metode algoritma soil menunjukkan adanya dua probabilitas. Probabilitas pertama menunjukkan mineral bijih yang terdeteksi adalah hematit dan ilmenit, sedangkan mineral-mineral non-bijih adalah kuarsa, augit dan biotit. Probabilitas kedua menunjukkan mineral bijih yang terdeteksi hanya ilmenit, sedangkan mineral-mineral non-bijih yang terdeteksi adalah hipersten, kuarsa dan biotit. Analisis mineral berbasis metode algoritma alloy menunjukkan mineral-mineral bijih yang terdeteksi adalah magnetit, hematit dan ilmenit, sedangkan satu-satunya mineral non-bijih yang terdeteksi adalah albit.
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