The Sediesh Creek Slate occurrence is located at approximately the 460 metre elevation on the south side of Sediesh Creek, 29 kilometres north of Hazelton.

The area is underlain by the Lower Cretaceous Kitsuns Creek Formation (Skeena Group) which consists of sandstone, siltstone, shale, polymictic conglomerate, coal and carbonaceous sediments.

No other information is available on the occurrence.