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"The ore bodies which are localized in several calcareous shale beds within the upper Cambrian sediments are lenticular in shape, and are essentially parallel to the bedding of the host rocks. Among the several ore beds only one, the main ore bed, is productive. The ore minerals of the mine are scheelite, wolframite, molybdenite, bismuthinite and tetradymite. Among them tetradymite had not been previously reported from this mine. The metal content of the ore and the intensity of the wall-rock alteration are roughly proportional to the abundance of quartz veins."
This record provided courtesy of AGI/GeoRef.
This article has been cited by other articles:
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  L. M. Gaspar, L. M. Gaspar, and C. M. C. Inverno Mineralogy and Metasomatic Evolution of Distal Strata-Bound Scheelite Skarns in the Riba de Alva Mine, Northeastern Portugal Economic Geology, September 1, 2000; 95(6): 1259 - 1275. [Abstract] [Full Text] [PDF]
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