MINERALOGI BIJIH DAN KORELASI ANTARA UNSUR Au DENGAN UNSUR Ag, Cu, Pb, DAN Zn PADA SAMPEL PARITAN UJI PIT X PT NUSA HALMAHERA MINERALS, KABUPATEN HALMAHERA UTARA, PROVINSI MALUKU UTARA
ORE MINERALOGY AND CORRELATION BETWEEN THE ELEMENT OF Au WITH ELEMENTS OF Ag, Cu, Pb, AND Zn IN TRENCH’S SAMPLE OF PIT X PT NUSA HALMAHERA MINERALS, NORTH HALMAHERA REGENCY, NORTH MALUKU PROVINCE
Abstract
The identification of deposits and mineralogical characteristics of ores is necessary to assist further exploration development activities. Research in the Pit X test trench area was conducted to determine the type of epithermal deposits based on the deposite form, ore mineral texture, alteration, sulfide minerals, and gangue minerals that are dominantly found from the results of direct megascopic sample descriptions in the Pit X test trench area, mineragraphic analysis, and petrographic analysis. Deposite forms encountered are vein, stockwork, and dissemenited. Ore mineral textures encountered are banded, comb, dogteeth, moss, vuggy and massive. Alterations encountered are silicification and silica-clay. Sulfide minerals found are pyrite and sphalerite. Gangue minerals found are quartz, sericite, and hematite. Based on the results of the deposite form, ore mineral texture, alteration, sulfide minerals, and gangue minerals found, the Pit X test trench research area is included in the low sulfide epithermal deposit type at a depth of about 300-350 m below the surface, deposited above the boiling zone. In this study, additional data processing was carried out regarding the correlation between Au and Ag, Cu, Pb, and Zn using the results of their grade values to determine the relationship between Au and each of the other four elements. The correlation coefficient (R) was obtained between Au-Ag = 0.158429795, Au-Cu = 0.01, Au-Pb = 0.1923538, and Au-Zn = 0.0565685425. Based on these results, it shows that the correlation of Au with Ag, Cu, Pb, and Zn is very low which may be due to the presence of all samples from the same elevation
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