The Blackmore occurrence is poorly documented and the best location is given as north of Kingsgate. An unknown reference plots the occurrence west of Kingsgate at the centre of the Ice #12 claim; the reference indicates drilling at this location.

Regionally, the area is underlain by the peri-cratonic Middle Proterozoic Purcell Supergroup, a thick succession of siliciclastic and lesser carbonate rocks. The Purcell Supergroup is well known for hosting a number of significant deposits that include the Sullivan (082FNE052) sedimentary-exhalative deposit and the Troy copper-silver deposit in Montana.

A shipment in 1948 of 5 tonnes produced 373 grams of silver and 9 kilograms of lead indicating grades of 82.2864 grams per tonne silver and 0.95 per cent lead (Minister of Mines Annual Report 1948).

During 2004 through 2012, Eagle Plains Resources Ltd. completed programs of geological mapping, geochemical (soil and rock) sampling and airborne geophysical surveys on the area as apart of the Iron Range property. A completed property exploration history can be found at the O-Ray (MINFILE 082FSE017) occurrence.