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Rituraj Borthakur posted an Question
August 05, 2022 • 23:30 pm
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30 points
30 points
- IIT JAM
- Geology (GG)
A copper nickel sulphide ore deposits occurring in the basal part of a layered gabbro can originated by the following process
a copper nickel sulphide ore deposits occurring in the basal part of a layered gabbro can originated by the following process
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Raghubeer rai Best Answer
option c. Early magmatic injection is the correct ans ,cu-ni-sulphide deposit can form either by replacment process or by injection phenomenon.
as the platinum ores associated with the nickel copper sulphode deposite of Vlackfontian, Rostenburg, South Africa are regarde as late magmatic immiscibile liquid segregations... then can the right ans be D?
actually as per i know nickeliferous magma generated from mantle when come in content with crust ,,make sulphur or add sulphur with nickel and cu also additionally added with this but the main thing is this type of deposit can be commonly found in veins,,late magmatic immescible term come when two immescible liquid separates from each other this can be seen in sulphide and silicate melt .but the main thing nickel which is denser elements i think on that time this is not associated with sulphide liquid...from refrence you can see in economic geology book written by umeshwar prashad..in late magmatic segregation Cu-Pb-Zn deposit form also hydrothermal deposit too.
kindely look into it hope it will helpful for you