Projects

Red Cliff

Show printable version of 'Red Cliff' item in a New WindowEmail 'Red Cliff' item to a friend

Red Cliff


The Red Cliff property is a former producing copper and gold property originally staked in 1908 located about 20 kilometres north of Stewart, British Columbia in the Skeena Mining Division. It consists of 8 Crown Granted claims along Lydden Creek. The claims extend from just west of American Creek with its confluence with Bear River along Lydden Creek for approximately 3 kilometres. The property is accessible by road approximately 1.5 kilometres from paved highway 37A and is underlain by lithologies of the middle Jurassic Hazelton Group. These rocks host significant precious and base metal deposits in the Stewart Camp including the Silbak Premier, Silver Coin, Sulphurets, Red Mountain and Eskay Creek deposits.

The property contains three main mineralization types identified along a number of different zones during previous exploration activities. Mineralization noted in the zones is as follows:
  1. Extremely fine grained pyrite in host rocks that have been pervasively altered to a mixture of sericite and quartz.
  2. Veins carrying coarse-grained pyrite and chalcopyrite plus or minus galena and sphalerite plus or minus significant gold values associated with quartz.
  3. Intensely silicified rocks, possibly intrusive with strong epidote and chlorite associated with quartz veins containing up to 25 % coarse pyrite and local minor chalcopyrite.
Highlights from historical work for the three main zones on the property include:

The Red Cliff zone contains 2,385 m of underground development on 5 levels from 4 portals over a height of several hundred meters with limited Cu-Au production reported in 1910-12 and 1973. From 1910 -- 12 production from the Redcliff zone amounted to approximately 1,136 tonnes estimated to average 5% Cu. In 1972 some 3,776 tonnes of ore was sent to a local mill. The only reserve estimate reported for the Redcliff Zone was in 1912 showing a total of 18, 900 tonnes averaging 3.19% Cu and 2.86 grams per tonne gold. This estimate was only for broken mineralized material within a stope on one of the levels in the mine. This estimate is historical and is not 43-101 compliant and is used for reference purposes only.

The Montrose zone occurs approximately 1000 meters to the north of the Red Cliff zones and consists of silicified andesite associated with shearing with pyrite, chalcopyrite, galena and sphalerite mineralization in quartz veins and stockworks. This zone has been developed along al short adit in a very steep part of the property. Initial sampling, conducted after discovery, above the portal area to one of the adits gave 198 g/tonne Au across 2.59 meters. During 1939-41 a total of 59 tonnes mined averaged 84.4 grams/tonne Au, 101 g/tonne Ag, 0.91% Cu, 3.5% Pb and 4.41 % Zn. In 1979 surface sampling gave 19.3 grams/tonne Au across 2.43 meters while 1987 surface sampling returned 7.93 grams/tonne Au across 3.81 meters. Recent drill intercepts include 9.3 grams/tonne Au across 1.71 meters.

The Company owned a 100% interest in the Red Cliff property through a purchase agreement in 2007. The Red Cliff property is subject to a 2% net smelter return royalty of which the Company may purchase 1% for $1,000,000. In May to October 2007, Mountain Boy Minerals Ltd completed a total of 8554.96 meters of drilling was completed in 41 holes on drill roads constructed during the field season. Drilling was primarily conducted in the area of the Red Cliff zone and Montrose zones

On November 19, 2008, Mountain Boy entered into an option agreement with Decade Resources Ltd., a company with directors in common with Mountain Boy to option Decade a 60% interest in the Red Cliff claims. In order to earn the 60% interest, Decade was required to incur exploration expenditures on the property of $500,000 in the first year, $500,000 in the second year and $250,000 in the third year. Decade has incurred sufficient exploration expenditures to earn the full 60% interest in the Red Cliff claims. The companies now operate the Red Cliff property on a 60/40 joint venture basis.

From June to November 2009, Decade completed a total of 5,227 metres of drilling in 36 holes on drill roads and drill pads constructed during the field season. Drilling tested the Montrose zone in three areas, namely north of the previous mining activities in Lydden Creek, in the Lydden Creek canyon just west of the previous mining activities and along the possible south extension. Drilling extended the zone well below the lowest working as well as indicating that it extends to the north from the adit in Lydden Creek. In addition, drilling intersected a wide zone of intensely silicified and pyritic rocks to the west of the Montrose zone.

In 2010, the joint venture partners drilled 12,706.10 metres in 83 holes with 27 holes on the main Red Cliff zone, 2 holes on the Waterpump zone and 54 holes on the Montrose zone.

Some of the significant assays for the 2007 to 2010 drilling are shown below:


Significant Drill Hole Intersections from 2007-2010


DRILL HOLE
No.
FROM
(m)
TO
(m)
CORE
INTERVAL
(m)
Au
g/t
Ag
g/t
Cu
%
2007-RC-7 10.37 14.39 4.02 2.20 28.10 3.51
2007-RC-8 9.45 14.18 4.72 3.85 19.46 2.01
2007-RC-15 15.03 22.26 7.72 2.85 19.20 1.83
and 24.70 26.62 1.92 6.62 15.60 1.12
and 50.91 53.96 3.05 2.18 20.70 1.08
2007-RC-24 182.32 182.62 0.30 1.82 1.30 0.15
2007-RC-30 13.72 14.33 0.61 1.28 29.60 1.35
and 15.24 16.31 1.07 1.80 29.70 3.47
and 18.90 20.06 1.16 1.61 12.20 1.24
and 32.62 34.54 1.92 2.19 7.14 0.42
2007-RC-56 117.93 128.66 10.73 1.76 20.24 3.61
and 137.80 141.77 3.96 0.81 14.25 1.78
2009-MON-1 29.98 62.50 32.52 7.53 8.70 0.17
2009-MON-2 43.90 49.91 6.01 1.92 5.52 0.04
and 57.62 106.10 48.48 4.17 3.86 0.35
2009-MON-3 46.04 53.96 7.93 3.10 4.48 0.12
and 74.39 102.74 28.35 7.30 4.04 0.35
2009-MON-4 22.17 60.06 28.41 5.78 5.00 0.35
2010 MON-1 113.4 121 7.6 12.19 2.02 0.29
2010 MON-16 143.3 150.3 7.01 5.68 2.76 0.26
2010 MON-27 45.12 58.54 13.42 8.19 6.5 0.37
including 45.12 46.65 1.53 35.08 21.6 0.186
2010 MON-28 57.16 75.61 18.45 49.2 4.96 0.12
including 73.78 74.08 0.3 2847 193.3 1.59
2010 MON-31 60.37 86.28 25.91 10.94 4.51 0.22
2010 MON-52 21.95 28.96 7.01 8.9 4.17 0.67


Work during 2011 will focus on modeling the Montrose zone mineralization to aid in future exploration.  

Mountain Boy Minerals Property Locations

Corporate Presentations and Downloads