Volume : VII, Issue : IV, April - 2017

Occurrence of basemetal mineralization in Potin Area, Subansiri District, Arunachal Pradesh (NE India)

B. K. Tamuli

Abstract :

 Sulphide mineralization  in the Potin Area of Subansiri district, Arunachal Pradesh, NE India has been reported. Mineralization in the area is both structurally and litho–stratigraphically controlled, confined to a shear zone of about 30 mts in width, traversing through garnetiferous quartz– biotite– schist belonging to the Bomdila Group. The sulphides consist of chalcopyrite–pyrite–pyrrhotite and sphalerite. Two episodes of mineralization have been noted. The earlier mineralization is parallel to the foliation plane trending ENE–NSW with a moderate dip of about 35^• toward SE direction while subsequent sheå causes cataclasis of the garnet porphyroblasts and forceful injection of most ductile sulphide like chalcopyrite. Comprehensive P & T study of hosts and ore indicate that the host rocks were derived from cataclasis; metamorphosed at a temperature ranging from 478^•c–522^•c  under  variable pressure of >2.5 kb.

 

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Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

B. K. Tamuli, Occurrence of basemetal mineralization in Potin Area, Subansiri District, Arunachal Pradesh (NE India), INDIAN JOURNAL OF APPLIED RESEARCH : Volume‾7 | Issue‾4 | April-2017

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