Drilled at a right angle to the discovery hole and angled at minus 60, hole 2 intersected 148 metres of kimberlite from a down-hole depth of 30.4-178.3 metres. The interval is described as autolithic kimberlite containing 20% green olivine macrocrysts in a serpentine-rich matrix. Mantle xenoliths of peridotite and harzburgite are present. The kimberlite intrudes a limestone sequence.
Hole 2 is believed to have tested the southwestern margin of the pipe, whereas the first hole, which cut a previously reported 83.2-metre interval of kimberlite, tested the northwestern boundary. Cargo 1 has a magnetic expression measuring 140 metres in diameter.
The Cargo 1 pipe is on the northern tip of Baffin Island, 4.2 km northeast of the Freightrain kimberlite, where Twin completed 17 drill holes this summer and excavated six mini-bulk samples weighing a total of 320 tonnes. Freightrain is a much more complex body than Cargo 1, with large blocks or rafts of limestone lying within the kimberlite system.
Most of the samples have been shipped by boat and are not scheduled to reach Lakefield Research for analysis until the beginning of November. About a tonne of core samples from the Freightrain and Cargo 1 kimberlites arrived at Lakefield Research by air-freight in mid-September. Results are pending.
The summer program at Jackson Inlet consisted of 20 holes totalling 1,558 metres. A single hole tested a second magnetic feature, but no kimberlite was hit.
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