|
Rich River Exploration Ltd.
Standfast ~ Wigwam
Standfast ( Wigwam ) - Zn-Pb-Ag Deposit.
SUMMARY REPORT ON THE STANDFAST ( WIGWAM )
HISTORY
References to the Wigwam property are made in the Minister of Mines Annual Reports for 1915, 1921,1923 to 1931, 1960 and 1961 In 1924 the Wigwam property was acquired by the Wigwam Mining company of Tacoma, Washington. Over a 6 year period, work included diamond drilling, open-cutting and 13 adits along 4500 feet of outcrops.
Twenty-eight holes were drilled along the outcrops for a total of 5877 feet. Most of the original data has been lost, and the only one for which assays have been recorded, is a section across 52 feet with a weighted average grade of 9.87% lead and 15.20% zinc.
34 trenches and open cuts have revealed mineralization along the outcrops. The 13 drifts, crosscuts and raises amount to a total of 1963 feet of underground development, many channel samples were cut in the exposed mineralized zones.
Cominco Exploration Ltd. Optioned the property from 1960-1961 and completed a program of geological mapping and channel sampling.
Parmac Mines explored the property from 1968-1981, and completed 1269 feet of diamond drilling, road building and surface sampling. They calculated the defined and inferred reserves from this work.
Craig Lynes acquired the property in 1993. A prospectors grant was obtained in 1995 and a program of soil sampling and ground geophysics
( Magnetometer and VLF-EM ) was completed. The results of this program revealed several new coincidental anomalies that remain untested.
PROPERTY LOCATION and ACCESS
The property consists of numerous MTO cells covering an area of 1202.8 hectares or 2,887 acres. The claims are collectively known as the Standfast Wigwam group.
The property is in the Revelstoke M.D. on map number 082K081
The properties are accessed from Revelstoke BC, via the paved arrowhead Highway south for 19 Km. Then east along the Akolkolex River Logging road for 15.6 Km. Four-wheel drive tote roads and good access trails, extend onto the property accessing the workings.
REGIONAL GEOLOGY
The overall structure of the Selkirk Mountain Range is essentially geosynclinal with a northwesterly trend. To the east lies the metamorphosed Lardeau series of the Windermere system of Upper Proterozoic age. The series is composed of schists, phyllite, slates, quartzite and limestone.
Conformably underlying the Lardeau series is the Badshot Formation of upper Precambrian age. The Badshot is a grey to white crystalline limestone. Silicified units of the Badshot formation are the host to the Base Metal mineralization on the Standfast property.
Suggestions that the Standfast (formerly Wigwam) deposit is syngenetic (Sedex) have been made, but of a different style. Carbonate hosted, apposed to a cherty carbonaceous black shale hosted sedex.
There is no record of production from this property.
STANDFAST ~ MINERALIZED ZONE
PROPERTY GEOLOGY
The following rock types are described in descending order of age, from observations of outcrops and detailed core logging.
SCHIST and PHYLLITE: occur in the upper limits of the geologic sequence within the map area. It is grey, schistose, brown-weathering, and contains metachrysts of white weathering feldspar.
LIMESTONE: white massive course-grained, with diopside: recrystallized, dolomite, minor grey phyllite and zones of tremolitic limestone and dolomite.
SCHIST: black to dark grey, with brown weathering and calcareous in places.
DOLOMITE: white to blue grey, fine-grained, massive, weather to buff.
QUARTZITE: grey, thin-bedded, with minor tremolitic limestone.
ORE RESERVES
They calculated tonnage figures from diamond drilling and sampling of 34 surface showings and 13 underground workings along the strike.
The showings are exposed along a known dip length of 4800 feet, at elevations between 2400 and 4400 feet above sea level. Thickness of the mineralized beds varies from 6 to 150 feet.
Tonnage figures were calculated by treating each showing and drill holes separately. Dimensions used were one-half the distance between, and 50 feet beyond the drill holes along the strike. The tonnage factor used was 12 cubic feet per ton of material. (1981, T.R. Tough, P. Eng.)
From data compiled to date, 697,558 tons of drill indicated ore grading 2.14% lead and 3.54% zinc has been defined.
A further resource of 8,481,212 tons has also been estimated.
An exploration program positioned along strike and down dip could define a much larger and higher grade resource.
An insufficient number of samples have been taken for silver, to warrant including this in the calculated reserves.
However a 13 metre intersection grading 111.4 g/t silver has been recorded.
The inferred resource is based on the assumption that the mineralized zone extends between two centres of drill indicated mineralization, approximately 600 metres apart. The tenure of this mineralization suggests a linear trend, and there is no reason why this zone does not continue.
The defined and inferred tonnage's appear to represent only a very small portion of the mineralized zone. Great potential to increase reserves and grades may be expected along strike and down dip.
The mineralised zone has been traced on surface, for 3 kilometres beyond the center of the main deposit.
The strike length of the base metal mineralisation exceeds 4.5 kilometres. The present claims cover over 3.5 Kilometres of the mineralised zone.
Some of the higher grade sections calculated from the data compiled to date, are as follows:
1,330,000 t @ 5.11% Zn
1,250,000 t @ 4.02% Zn
228,000 t @ 3.00% Pb, 5.00% Zn
150,000 t @ 3.30% Pb, 7.52% Zn
87,000 t @ 10.60% Zn
40,000 t @ 5.67% Zn
30,000 t @ 8.02% Zn
20,000 t @ 7.34% Pb, 10.55% Zn
All of the drilling to date has been done with AQ core, the mineralized zones have only been drill tested to a depth of 500 feet down dip.
Due to recovery problems with the small drilling equipment, some of the holes have been stopped in mineralization at that depth.
CONCLUSIONS
It is concluded from the data derived from sampling, surface and underground workings and diamond drill cores, that up to three limestone beds of the Badshot Formation hosts base metal mineralization in sufficient concentrations to be of economic significance.
Further work will be required to bring the inferred tonnages into their respective categories of proved and indicated ore.
The information enclosed in this brief summary has been condensed from several complete geological reports including diamond drilling.
A large amount of geological data is available for perusal.
AREA OF WORKINGS AND MINERALIZED ZONES
GENERAL CROSS SECTION OF MINERALIZED ZONES
Hand Trenching ~ 2007
Zn-Pb-Ag MASSIVE SULFIDE ZONE (STANDFAST)
LARGE FACE OF MASSIVE SULFIDES
( STANDFAST ~ 2007)
The Standfast (Wigwam) property represents an excellent exploration opportunity, due to its tonnage potential, road access, its carbonate host and the proximity to power and major transportation routes.
Zinc hits all time high in 2006
Some analyst's expect zinc to be selling over $2.50 a pound in 2007.
After that, the sky's the limit. With the right conditions they believe we could be looking at $5 or $6 zinc within a few short years."
Zinc is the world's third most used nonferrous metal after copper and aluminum, it is primarily used as a galvanized coating on iron and steel to protect against corrosion of cars, roofing and cladding on buildings.
Many of the world's largest zinc deposits are depleted or due to be depleted in the next few years. This combined with normal annual zinc consumption, will require the discovery and development of more new zinc deposits.
According to a report from Reuters the recent rise in the price of zinc is attributed to continued strong demand for zinc in China, the world's biggest producer and consumer of zinc.
"The outlook for the metal is very encouraging, the western world is expecting a deficit of 158,000 tonnes of metal production, a result which will reverse three years of surplus output.
Zinc Prices
This property is offered for sale, by way of working option to purchase.
Contact us, for more detailed information.
Or to discuss participating in this project.
© COPYRIGHT (2008) RICH RIVER EXPLORATION LTD.
Site construction & design by C. A. Lynes
All Rights Reserved
Copyright Protected!
|