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Economic Geology GSW 2008 Users' Group Meeting
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Economic Geology; June 1946; v. 41; no. 4 Part 1; p. 383-389
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Tin and tungsten deposits of French Morocco

E. T. Heck

"The only known deposits of tin and tungsten ores in French Morocco are located near Oulmes east of Casablanca. The El Karit tin deposit is confined to a zone of sedimentary rock adjacent to granite. The tin occurs as cassiterite in and along quartz veins. . . . Presence of ore has been demonstrated over an area 2.5 to 3 miles long and 800 to 1,600 feet wide. About 3 miles southwest . . . is the El Zguit tungsten deposit. The ore occurs as wolframite, ferberite, and scheelite, along the margins of a few large quartz veins. . . . Mineralization has been found over a length of possibly two miles. Both deposits are judged to be of commercial grade."

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