Dianor’s James Bay lamprophyres disappoint

Surface samples taken by Dianor Resources (DOR-V) from a lamprophyre dyke swarm on the Yasinski North claims in the James Bay region of northern Quebec have proved either barren or weakly diamondiferous.

The claims form part of Dianor’s wholly owned Exploration Permit 1404, which lies 130 km east of Wemindji and 65 km south of Radisson. Last summer, the Laval-based junior recovered a single microdiamond from a 13.6-kg sample of a lamprophyre dyke that was traced on surface for a distance of 100 metres. Samples from two other nearby dykes yielded no stones.

Follow-up work has identified a swarm of 38 lamprophyre dykes within 500 metres of the diamondiferous dyke. The dykes outcrop over distances ranging from 5 to 350 metres, with widths varying from 0.5 to 7 metres. Dianor selectively sampled eight dykes from the swarm, plus three dykes found elsewhere on the 1404 property; specifically, the company collected 1-2 kg of sample every 5-10 metres along the surface exposures of the dykes.

Caustic fusion analysis by the Saskatchewan Research Council recovered only a single microdiamond each from two of the dykes in the swarm. A 31.9-kg sample of dyke No. 5 contained a yellowish beige stone, whereas a 58-kg sample of the No. 9 dyke yielded a frosted white microdiamond fragment.

In related news, Dianor and Wemindji Exploration, a privately owned native corporation, have jointly staked 385 claim units covering 196 sq. km in the James Bay area, pending confirmation of title by the Quebec Ministry of Natural Resources.