History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c17.s4.t2.8
History of Technology in India, Vol. I: From Antiquity to c. 1200 A.D. v1.c17.s4.t2.8
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v1.c17.s4.t2.8
Excavation by Willies et al (1987, 1989) has revealed ancient mining of the Rampura-Agucha deposit (25° 50' N, 74° 44'15" E) in Rajasthan. There is the clear base of a gossan at about 15 m. depth from which marmatite, pyrite and sphalerite (ZnS) were selectively oxidised and leached by the natural agencies leaving galena-cerussite-anglesite ore-body enriched in terms of silver.