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Conway Resources Inc CWNYF



GREY:CWNYF - Post by User

Post by denj681on Mar 10, 2011 12:07pm
183 Views
Post# 18265939

Veins 12,12w, 26,2,20 and 1,2,11

Veins 12,12w, 26,2,20 and 1,2,11Veins I missed that I covered in previous posts (15,30,19,23,5,28,29,1,7,6,8,18 whew) these are the ones I MISSED!

9.1 Transversal veins

9.1.1 Vein No. 12

This vein contained most of the gold mineralization until now and was the source of more than 95% of the ore extracted by Belleterre Quebec Mines Ltd. between 1936 and 1959 (2.18 million metric tons at 10.73 g/t Au and 1.37 g/t Ag). It consists of bluish or smoked out, usually massive quartz containing several wall-rock enclaves. Small quantities of pyrite, pyrrhotine, sphalerite, chalcopyrite and local native gold are found associated with the vein particularly near the contacts with the host rock (Figures 6, 7 & 9). The vein consists of a tabular lens, of very irregular form (pinch and swells) and surfaces at the western and nearby No.1 Shaft. The vein roughly strikes N247° and dips approximately 57° SE as compared to the host rocks that dip steeply to sub vertically towards the SE. It is almost entirely confined in an intermediate to mafic lava flow with felsic tuffs to the top by unit No 16 and felsic tuffs for unit No 14 at the base. These tuff

units are stratigraphic reference markers and were well identified by a great number of underground workings and bore holes. The vein was recognized over more than 900 meters in length, was developed and mined down to 450 meters deep. Its width varies from few centimetres to more than 3 meters locally. Secondary fractures and veinlets ramify from the principal vein at its

western end and branches off from level 125 (38 meters) to the surface.

9.1.2 Veins No. 12W and 26

These veins are localized west of Shaft No. 3 and would correspond to the western extension of Vein No. 12, which is folded at that location. Vein No. 12W was developed below underground levels during the Fifties until the closing of the mine. In 1960, it was estimated that this vein contained historical resources of approximately 317,600 metric tons at 3.43 g/t Au (Internal report by McIntyre Mines). The vein was mined very partly due to its weak dip of 25-30° towards the West and its lower grade content. Vein No. 26 which seems to be the prolongation of Vein No. 12W towards the East and was partly worked in the past. Approximately 74 000 tons of ore was extracted between 1955 and

1957 with an average grade of 0.29 oz/t Au. These two veins show a possible extension under level 1275 (390 meters) where mining was completed. An average of approximately 4 meters of overburden covers the No.12W and No. 26 Veins except locally where it appears at the surface on a few meters. Surface geological mapping and sampling was completed on these 2 veins during 2006-2007 field seasons. Recently, Vein 12W revealed some significant gold bearing values such as 2,02 g/t Au over 0,5 meters; 2,06 g/t Au over 0,5 meters and 4,05 g/t Au over 0,5 meters (Figures 9 & 10). 9.1.3 Vein No. 2

At the Eastern end and above Vein No. 12, i.e. above tuff unit No. 16, there is

another crosscutting vein which behaves in a way similar to that of Vein No. 12.

Vein No. 2 was observed on five levels in the mine and over lengths varying between 90 and 150 meters. The vein extends from surface near Shaft No. 1 down to 180 meters deep and general orientation N290° E. Its dip is abrupt

towards SE and the width varies between a few centimetres and 2 meters. Sampling by Riverton Resources made it possible to define a content varying between 0.05 and 0.69 oz/t Au over 5 meters over 30 meters of sampling. As mentioned previously, this vein is exposed over approximately 100 meters

in length and 20 meters in width, close to Shaft No. 1 and could be the subject of a bulk sampling of a few tens of thousands of tons at a grade between 3 and 6 g/t Au (Figure 9).

9.1.4 Vein No. 20

The discovery of this vein was made in the last years of exploitation of the mine. It is located at the south and below the Eastern end of Vein No. 12, within intermediate to mafic flows. Whereas Vein No. 12 pinches at depth, perhaps Vein No. 20 seems to become a little longer and represents an extending system of fractures at the lower levels. Vein No. 20 strikes E-W and dips 85° towards the north. Underground observations, on level 1500 (450 meters), show that it occupies a shear zone hosted in lava, diorite and porphyry. This zone of shearing has a width from 3 to 5 meters and the vein consists of quartz lenses, which overlap other zones “en echelon” along the structure and with 23

repetitions of lenses (boudinage). The vein contains significant quantities of sulphides especially of pyrite, accompanied by pyrrhotite, chalcopyrite and sphalerite. Very few developments was done on this vein between its discovery in 1953 and the closing of the mine in 1958. Future diamond drilling will permit to check the extensions and the potential of this vein.

9.1.5 Vein No. 11

This vein could correspond to the western projection of Vein No. 1. It consists of

white quartz sometimes smoky grey with a very small quantity of sulphides. It is located in an andesitic flow that shows the same correlations with the tuff units hosting other known transverse veins (Figure 9). This vein was explored in the various drifts between levels 125 and 500 over a

length of 500 feet. Underground, it consists of a network of veinlets, but locally can reach a width of 3 meters. At surface, previous work completed by Riverton Resources updated this vein and a preliminary sampling revealed values varying between 0,15 oz/t Au over 8 feet up to 1,07 oz/t Au over 2 feet with an average grade of 0,36 oz/t Au over 4,2 feet, along 110 feet of sampling on the vein. A bulk sample of a few thousand tons at 3 to 5 g/t Au is required.



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