New Jackson bodies bear stones (October 13, 2003)

Sampling of three areas of frost boil on Twin Mining‘s (TWG-T) recently discovered Jackson Inlet kimberlite bodies has proved fruitful.

In all, three samples totalling 50.5 kg yielded 13 diamonds, with each of the samples bearing stones. SGS Lakefield Research also recovered diamond indicator minerals from two of the samples; the third was analyzed for diamond content only. The material was derived from three areas covering some 1.7 km between the company’s diamondiferous Freightrain and Cargo 1 pipes.

According to SGS, the indicator minerals include highly depleted sub-calcic chromium-pyrope garnet (G10) and rare high-pressure eclogitic garnet. It also says the mantle ilmenite compositions indicate that any diamond present would be highly preserved.

Twin discovered kimberlite fragments on the frost boil surfaces in late August. The fragments were concentrated above and in the vicinity of a tan coloured soil similar to that at Freightrain. The fragments, which show no sign of transport wear, were found distributed across up to 50 metres of width within the northeast-trending corridor between Freightrain and Cargo 1.

Meanwhile, ground magnetic surveying this summer at Cargo 2, revealed eight anomalies with characteristics that suggest the presence of shallow kimberlite bodies penetrating a thick sequence of flat-lying limestones.

The anomalies lie in two corridors 1.2 km apart, and parallel to the Freightrain-Cargo 1 corridor. The largest of the anomalies measures 250 metres in diameter.

Twin recently staked 2,283 sq. km east and south of its Jackson Inlet claims, bringing its land holdings in the area to 5,107 sq. km. Analysis of some 426 till and stream-sediment samples collected from 3,428 sq. km is about to begin.