Work History

Staked within Blue Lite cl 1-128 (YA40742) in August, 1979 by the Prism Joint Venture 1979 (Asamera Development Corporation Ltd., Chieftain Development Company Ltd., Prism Resources Ltd., Dome Petroleum Ltd. and E & B Explorations Ltd.). The claim block also covers the Flat Top (formerly Flat Ridge) occurrence (MINFILE occurrence 106D 005) located 2.5 km to the southwest.
 
In 1979, the group carried out regional geological mapping, rock sampling, and regional and grid based soil sampling programs. The company also collared one diamond drill hole (140 m) on the occurrence. In 1980, the group carried out detailed geological mapping and a large regional stream sediment sampling program.

Re-staked as BL cl 1-6 (YA77639) in September, 1984 by Prism Resources Ltd.

Re-staked within R cl 1-1 295 (YC68334) in July, 2008 by ATAC Resources Ltd. Later in the summer the company flew a property wide helicopter-borne magnetic and variable time-domain electromagnetic (VTEM) survey and carried out a regional stream sediment program, which included the area surround this occurrence.

In 2009, ATAC Resources systematically stream sampled all the major streams flowing downhill of the occurrence. The company collected rock samples from the occurrence and where possible any outcrops surrounding the occurrence. In addition, the company collected a line of soil samples across the northern side of the occurrence.

In 2010, ATAC Resources collected two lines of contour soil samples (sample spacing = 100 m) down slope from the occurrence. Follow-up soil sampling was performed in 2011 by ATAC Resources and prospecting in 2013. A small soil sampling program was performed in 2015.

Regional & Property Geology

The occurrence lies on the north side of a mountain peak (that Prism Resources informally named Blue Mountain) and at the headwaters of an unnamed creek which flows north into a small lake lying west of the main body of Kathleen Lakes. L.H. Green of the Geological Survey of Canada mapped the area at 1:250 000 scale in 1961 as part of a helicopter-supported party known as "Operation Ogilvie". The area was remapped by Abbott (1990) in the 1980's as part of a cooperative project between Exploration and Geological Services Division (now part of the Yukon Geological Survey) and the Geological Survey of Canada (GSC). Gordey and Roots (1990) of the GSC, remapped maps sheets 105M16 and 106D08 & 07 East respectively at the same time. Roots (1997) under contract with the Exploration and Geological Services Division also remapped topographic map sheet 105M located directly to the south in the mid-1990's. In 2003, Gordey and Makepeace released a geological compilation of the Yukon which covered this area.

The Blue Lite prospect lies with the Rau Trend between the Dawson and Kathleen Lakes thrusts, which form part of a band of regional-scale thrust faults that imbricate rocks of Mackenzie Platform and Selwyn Basin. The occurrence area lies on the western margin of ancestral North America and is underlain primarily by shallow water carbonate and clastic sediment rocks of the Mid-Proterozoic to Paleozoic Mackenzie Platform and the Neo-Proterozoic to Paleozoic, regionally metamorphosed Selwyn Basin clastic rocks. These rocks formed a fault-bounded sediment package which was thrust northeasterly during Jurassic to Cretaceous times by the Dawson and Kathleen Lakes thrust faults onto predominantly Proterozoic rocks. Following thrust faulting, Late Cretaceous (94-90 million years) intermediate to felsic plutons of the Tombstone Suite were emplaced (Mortensen et al., 2000). A second compressional orogenic event around 65 million years saw the emplacement of felsic intrusives assigned to the McQuesten Suite.
 
Other than the immediate area surrounding the Tiger deposit (MINFILE occurrence 106D 098), the occurrence area has not been geologically mapped in detail. ATAC Resources (AR 096936) has mapped 3 main units in the area comprising the Rau Trend:
1. Cambrian to Ordovician massive, grey dolostone,
2. Ordovician and/or Silurian bedded, grey and buff silty limestone and massive white limestone, and
3. Silurian to Devonian thick, bedded dolostone and limestone.

The company has assigned all three units to the Cambrian to Devonian Bouvette Formation. Colpron’s 2013 geological map generally supports this interpretation; however it uses slightly different age dates and doesn’t include the oldest rocks (Cambrian to Ordovician dolostones) within the Bouvette formation.

Thin volcaniclastic horizons assigned to the Ordovician Marmot Formation are interbedded with the Ordovician and/or Silurian limestones and a narrow sliver of Mid-Proterozoic Fifteen Mile Group dolostone underlies the Bouvette Formation rocks to the southwest. Devonian and Mississippian Earn Group comprised of black shale and chert bounds the Bouvette Formation to the south east and north in the southern half of the Rau Trend property.

Mineralization at the Rau Trend varies and consists mainly of: sediment-hosted replacement-style Au; structurally hosted Ag-Pb-Zn; skarns; Au-bearing quartz veins; and transported gossans/unknown deposit style (AR 096936).
.
Mineralization & Results

The Blue Lite occurrence covers skarn mineralization exposed in a cliff face on the north side of a prominent peak. Mineralization consists of scheelite as disseminations with massive pyrrhotite and minor chalcopyrite. The mineralization disappears under talus to the east and grass to the west and is located along a high angle normal fault that dips south. This fault marks the contact between Devonian to Mississipian clastics to the north and Devonian to Jurassic clastis to the south.

Rock samples collected by Prism Resources returned up to 4.3% tungsten but generally averaged between 0.02% and 0.08% tungsten. The 1979 diamond drill hole tested the mineralization and intersected 43 m of skarn estimated to average 2% pyrrhotite with minor scheelite and chalcopyrite throughout. The best intervals assayed 0.5% copper, 0.02% tungsten) and 0.02% tin across 1.8 m and 0.2% copper, 0.08% tungsten and 0.02% tin across 0.9 m.

In 2009, ATAC Resources collected rock samples from the exposed mineralized area and surrounding accessible outcrops. Three samples returned greater than 0.10% tungsten with a peak of 0.34%. Most of the other samples ranged from 200 ppm to 950 ppm tungsten while gold values were all below background, with a peak of 9 ppb Au. Soil sampling carried out over 2010 and 2011 outlined a 200 m long cluster of anomalous gold and bismuth values surrounding the occurrence.

In 2013, ATAC Resources performed prospecting along the skarn horizon with an emphasis on gold. Samples of oxidized skarn returned up to 2.18 g/t Au.

A small soil sampling program was performed in 2015. 

Assessment Reports that overlap occurrence