Abstract
Approach to Measurements of Block Size and Rock Quality Designation on Nickel Laterite Mine
Highlights
Nickel Laterite nickel ore deposits are a formed from the process of ultramafic rocks such as laterization peridotit and dunite
From the results of the classification percentage for each deployment of area boulder, determine the type of rock fragment based Rock Quality Designation (RQD) values in a drill core log that has been used to classify the types of rocks on the west block as shown in the Table 1
Obtaining RQD value of the data processing based on block volume and different core samples
Summary
Nickel Laterite nickel ore deposits are a formed from the process of ultramafic rocks such as laterization peridotit and dunite. Limonite type laterite are highly enriched in iron due to very strong leaching of magnesium and silica They consist largely of goethite and contain 1-2% nickel incorporated in goethite. Saprolite type nickel ore formed beneath the limonite zone It contains generally 1.5 -2.5% nickel and consists largely of Mg-depleted serpentine in which nickel is incorporated. Bedrock is the original Nickel Laterite rock is composed by boulder > 75 cm size and block peridotite. Exploration activities have been conducting research on occurrences large blocks of the method of Rock Quality Designation (RQD) on Bedrock zone. Ultramafic rock units early Paleogene age; generally in this type of peridotite, the most experienced serpentinization degrees vary and is generally located in the East. Mineralogy of west ore is mainly composed of quartz, olivine, and pyroxene with minor talc, serpentine and spinel; whereas east ore contains principally residual serpentine with subordinate chlorite, pyroxene, amphibole, maghemite, and quartz [6]
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