EL 4969, annual report Alexandria Station for period ending 27-06-1988.

Abstract

This work is part of much larger search by Northern Cement to locate high-grade gypsum in economically viable quantities. The area of the EL attracted attention because of the gypsum crystals exposed during the building of turkey's nest dams in the black soil plains. An earlier ground reconnaissance found gypsum at No 6 and 18 Mile waterholes and in the soil near No 6 waterhole. Drilling at 18 Mile Waterhole intersected economic grade gypsum in only one of eight holes. Six Mile Waterhole gypsum deposit is being evaluated and found to be continuous with what was thought to be a separate deposit 1 km away. Drilling was conducting using a slewing crane and pendulum borer. In all, 82 holes were drilled. Early indications are that there may be in the order of 1.2 million tonnes of gypsum in the area.