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Rich River Exploration Ltd.
South Klondike Gold Property
INTRODUCTION
The White Gold area play in the Yukon has caused a great deal of excitement and a flurry of claim staking and exploration activity. The South Klondike Gold property in B.C., has been located to cover several showings of gold and base metal bearing stockwork quartz carbonate veinlets as well as Au-Ag-As Sb geochemical anomalies and drill intersections.
The South Klondike Gold project is located within the southern portion of the highly prolific Tintina Gold Belt. The property is underlain by favourable geology in close proximity to a large Cretaceous aged Intrusion. Numerous areas of Au-As-Ag-Cu with Pb-Zn-Sb soil anomalies remain untested by drilling.
LOCATION & ACCESS
The South Klondike Gold group of claims are located in northern B.C., near the Yukon border. The property covers the old Venus mill site, at latitude 59-57’ and longitude 134.42’ on N.T.S. map sheet 104M/15 . The South Klondike Highway cuts through the north-west end of the property, which is located about 32 km south of Carcross, Yukon Territory. The claims extend from Tutshi Lake at it's south-east end to the north west across the South Klondike highway.
LOCATION MAP
PHYSIOGRAPHY
The property is defined by two major northwest-trending ridges and one lesser one to the north, in between which there exists low swampy alder and aspen covered ground. Creeks in the northern and eastern part of the property drain areas from the east, south, and west. Elevations on the property vary from 2300 feet at lake level to 3000 feet on the north end.
Ridge tops are grass covered with stunted spruce. heavy timber, thick bush and dead-fall, while south slopes are slightly less vegetated with poplar and aspen, grasses, and alders.
Looking North from about Km 53 on the South Klondike Highway
The South Klondike Gold property is at Km 75
Looking south from near the old Venus Mine site Windy Arm of Tagish Lake Yukon
The South Klondike Gold Project is about 8 Km further south
EXPLORATION HISTORY
Previous work in the South Klondike area, consists of an adit into an altered conglomerate and limestone, which dates from the seventies, and was blasted for copper. At least seven other blast pits have been located, one occurring north of the highway in limestone and containing copper mineralisation. All the others were either in a conglomerate or a fine-grained felsic intrusive and contained copper-zinc-lead mineralization.
The pits seem to follow the contact between the intrusive and the altered conglomerate unit.
The oldest work on the property was at the turn of the century. The newer Cu-Au showings on the claims were discovered in May of 1987, by United Keno Hill Mines, during a prospecting traverse to examine the carbonate bluffs. several showing were encountered in the strongly altered conglomerate unit adjacent to a carbonate ridge.
Assays indicated anomalous values of gold and copper. Subsequent work included a geochemical and geological survey. This survey outlined several strongly anomalous areas, consisting of arsenic, gold, and copper, with lead, zinc and antimony.
Geology and Mineralisation of the White Gold area (Yukon)
The White Gold area geology consists of stacked thrust sheets of lower to middle-amphibolite facies Yukon-Tanana schist and gneiss. Permian metamorphic fabrics have been overprinted during Jurassic thrusting, with subsequent deformation associated with late Cretaceous normal faulting. Mineralization occurred prior to, or during this period of regional extension, and may be related to post-metamorphic orogenesis, or deeper buried (Tombstone Suite?) plutonism.
The area host multiple styles of gold mineralization including: quartz veins, hydrothermal breccias and disseminated sulphide targets indicated by widespread soil geochemical anomalies. The dominant mineralisation is quartz, albite, carbonate breccias with low volumes of disseminated pyrite. Gold mineralisation is characterized by breccias with a matrix of sulphides including pyrite and arsenopyrite.
MAP OF THE TINTINA GOLD BELT
SOUTH KLONDIKE REGIONAL GEOLOGY (Tectonic Setting)
The property area occurs in Stikinia terrane which is dominated by rocks of the Whitehorse Trough (Wheeler, 1961). The trough consists of Mesozoic forearc basin rocks which, along with the Paleozoic Cache Creek terrane, are part of an island arc assemblage (Monger et al., 1982). This assemblage collided with and was abducted over the North America craton during the mid-Jurassic. The boundary is marked by the Teslin suture zone, approximately 90 km to the east of the project area. Juxtaposed against the Stikinia terrane by a northwest trending extension of the Nahlin fault, just to the east of the project area. The western boundary of Stikinia is marked by a major dextral transcurrent fault, the Llewellyn fault, which is considered to be an extension of the King Salmon fault (Mihalynuk and Rouse, 1988).
Paleozoic and older amphibolite to greenschist facies metamorphic rocks, and plutons of the Coast Plutonic Complex.
PROPERTY GEOLOGY
Rock units encountered on the South Klondike group consist of Stuhini Group Upper Triassic volcanics, volcanic sediments, limestone, interbedded siltstones and argillites, and conglomerate. This Group is referred to as the "Lewes River Group" rocks on the Whitehorse map sheet. The eastern most carbonate unit, which extends from south of Tutshi Lake and continues through the property area marks the boundary with overlying lower Jurassic Laberge Group, Inklin Formation rocks, the contact of which varies from conformable to unconformable (Hart and Pelletier, 1989).
The contact between the altered conglomerate unit and the lower limestone unit appears to be fault controlled. In all cases the conglomerate unit is severely strained at the contact, such that the clasts are flattened and the matrix is altered to limonite and associated iron oxides. Minor quartz-carbonate veinlets in the carbonate unit trend northwest as well. The faulting appears to be brittle-ductile and transcurrent. The conglomerate unit with the upper limestone also appears to be faulted in several places, as the limestone is brecciated and contains abundant iron carbonate weathering, The faults would appear to be a locus for mineralizing fluids. Microscale structures, such as quartz and calcite veinlets in the limestone are always offset dextrally along northwest trending slip surfaces. This agrees with the regional movement on the Llewellyn Fault.
General Geology plus showings and claims
MINERALISATION
The rocks intersected with drilling were strongly altered and mineralized at the contact and became less altered and mineralized away from the carbonate contact. The abundant epidote and chlorite alteration
imparts a green colour to the rock which gradually gives way to a gray colour with depth.
Existence of breccia zones and abundant quartz stockwork veining are evident. As the alteration decreases, the fracturing diminishes and fracture fillings becomes calcite with pyrite as opposed to quartz with chalcopyrite. The majority of the mineralization present occurs as sulphide replacement of clasts and breccia matrix. Chalcopyrite, pyrite and pyrrhotite occur in varying amounts to 30% or more of the total rock.
The mineralisation seems to be associated with several local north east structures that cross-cut the trend of the enclosing sediments. The mineralization is associated with quartz veins, stock-work and breccia zones, as well as veinlettes and disseminations. The rocks have undergone severe structural deformation and alteration.
Cu-Zn skarn seemed to be the original target for past exploration on the property. Precious metal VMS plus Epi-thermal gold are also valid targets suggested by prior exploration.
Numerous surface showings of pyrite and pyrrhotite with galena, sphalerite, chalcopyrite and stibnite occurs along the north west trend of the rock units. These showings are under explored and warrant follow-up prospecting and sampling.
A 1.37 metre drill intersection averages 1.58% Cu, 1.20 opt Ag and 3.56 grams per tonne Au. A 4.4 metre intersection averages 0.855% Cu, 0.7 o/pt Ag and 1.51 g/pt Au.
A further fence of drill holes was recommended to test the strong geochemical anomalies, however this program was curtailed because of budgetary constraints. Most areas of the property remain untested and further discovery potential is considered excellent.
We are looking for a public company to fund a
sampling and prospecting program on this project.
Contact us, for more detailed information.
Or to discuss participating in this project.
This property is offered for sale.
Contact us, for more detailed information.
Or to discuss participating in these projects.
© COPYRIGHT (2008) RICH RIVER EXPLORATION LTD.
Site construction & design by C. A. Lynes
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