The Rose 2 (Munro Lake East) occurrence is located at an elevation of approximately 1700 metres, immediately north of a small lake or pond and approximately 3.5 kilometres north-northeast of the north end of Munro Lake.
The area is underlain by a dark, biotite-granodiorite of the Middle Jurassic Osprey Lake Batholith and granodiorite of the Lower Jurassic Pennask Batholith.
Locally, mineralization comprises iron oxide and pyrite bearing (epithermal?) quartz veins with comb and boxwork textures and silica-sericite alteration selvages have been identified. The veins trend northeast and dip near vertically. Other mineralized quartz veins, up to 0.25-metre wide, are reported (1986) down slope to the southeast of the previous zone.
Work History
In 1966 and 1967, Koporok Mines Ltd. and Kerr Addison Mines Ltd. carried out a program of line cutting, road building, claim surveying, an induced polarization survey, trenching and blasting on the area as the Cache 1-40 claims.
In 1969, a 134.0 line-kilometre airborne magnetometer survey was flown over the claim area; several magnetic linears and disturbances were identified.
In 1986, Almaden Resources Corp. completed a program of prospecting, rock sampling and a ground electromagnetic survey on the area as the Rose claims. A sample (3602) from a 0.25-metre wide quartz vein in granite with hematite-goethite alteration yielded 1.9 grams per tonne gold and 246 grams per tonne silver (Assessment Report 15207).
This was followed in 1987 by 23 overburden drillholes; the concentrates from 15 of these were anomalous in silver and zinc. In 1988, 34 overburden holes totaling 296 metres were drilled. Analysis by heavy mineral concentration identified three subparallel, east-northeast–trending, gold-silver-zinc anomalous zones in the basal till layer. Sampling on the Rose 2 claim is reported to have yielded up to 4.5 grams per tonne gold and 813 grams per tonne silver from a 15-centimetre wide vein (Assessment Report 25298).
In 1989, Goldbrae Developments Ltd. completed a 160 line-kilometre airborne magnetic and electromagnetic survey on the area immediately east of the occurrence as the Deep property.
In 1990, Almaden carried out a geophysical program consisting of line-cutting and magnetometer, very low frequency electromagnetic and scintillometer surveys. The program outlined a number of east-northeast–trending anomalous areas believed to be associated with a lineament which is known to host quartz veins containing gold and silver values.
During 1996 and 1997, two drilling programs were conducted to test the eastern and western portions of a large 4-kilometre long induced polarization chargeability anomaly. The drilling programs partially defined a large, low-grade porphyry silver-copper-molybdenum anomaly (Rose-Munro [MINFILE 082ENW021]) that extends for at least 2.5 kilometres in an east-west direction.
In 2008, Almaden Minerals Ltd. completed a program of silt sampling on the area as the Munro Lake property.
In 2018, Almadex Minerals Ltd. completed a minor program of prospecting, geological mapping and rock sampling on the area as the Munro Lake East property. A sample (18MAP006) from the Munro Lake East zone yielded 2.38 grams per tonne gold and 225 grams per tonne silver (Assessment Report 37622).
