Re: Will we Forgive??
in response to
by
posted on
Oct 30, 2011 02:42AM
Keep in mind, the opinions on this site are for the most part speculation and are not necessarily the opinions of the company WITHOUT PREJUDICE
Good digging MrsC, but you cause me work.
I did a post awhile back specifically on the mineralization of the host rock in two regions. One area was the A-7 area, here is an excerpt below from the 2005 Brophy report that will help anyone appreciate this area more. This is the area on top of the anomaly, to the far left, that has the tiny red bleb measuring 18 mr,s on the 3D image.VERY IMPORTANT, keep in mind, .2 g/t is economical as is 200 pbb. Look at the size of the zone below and the grades. Keep in mind the big red part of the anomaly has the same geophysical signature as the area described below.
The northern part of the A7 swarm is within a zone of propylitic alteration in brecciated and sheared diorite. Fourty-two trench samples of the altered diorite with an average sample length of 3.0 meters returned an average grade of 250 ppb gold within a north-northwesterly trending zone measuring 200 m by 50 m. The highest-grade sample assayed 2.26 g/t gold across 3.0 m. Another chip sample assayed 0.94 g/t gold across 7.5 m. This gold-anomalous alteration zone may be of economic interest at a higher gold price. Now, to comment on 2 other HOST ROCK zones I havent commented on before, The C-8 vein had one sample taken, but north of the vein a ways, and the C-5 had 3 samples taken, see excerpt below;
Four trench samples of altered zones (propylitic ± brecciated ± sheared diorite) were taken, three from the wallrocks of Vein C5 and one north of C8. All samples returned anomalous (120 to 220 ppb) concentrations of gold across widths of 4 to 11 meters. Now to repeat the Zona Sur Host Rock mineralization, look below at this excerpt;
The northern half of the S2 swarm is hosted in propylitically altered sheared and brecciated diorite. Thirty-three trench samples were taken from this alteration zone, but most samples returned less than 50 ppb gold. However, several trench samples collected immediately adjacent to veins returned anomalous gold. For example, at the northernmost end of the swarm, sample 253401 assayed 39.6 ppm gold across 1.1 meters. Immediately east of this, sample 253402 gave 1.02 ppm gold across 3.4 meters. Further to the south-southeast, trench sample 253403 assayed 2.26 ppm gold across 0.9 meters. About 150 meters to the southsoutheast of this, sample 562669, taken of altered diorite between veins, assayed 7.48 ppm gold across 2.0 meters. In view of these results, additional sampling of wallrocks immediately adjacent to and in between veins of the S2 swarm is warranted. The northernmost part of the S1 vein is exposed in a small window of diorite poking through surrounding volcanics. Within this window, an unusual style of quartz veining was observed in what was initially interpreted as subcrop. Veining occurs as knotty “blowouts” and micro stockworks of milky quartz in muscovite-bearing diorite. Grabs of this material across 27m assayed 1.75 ppm gold in sample 253259. This assay was confirmed by a check sample of the rejects. However, the outcrop source of this material was not encountered in the three deep trenches that were excavated at the site of sample 253259. It can only be concluded that the interpreted “subcrop” is actually transported colluvium, and that the source outcrop may be buried beneath the volcanics. Viewers, keep in mind that this post is ONLY dealing with host rock,and occasionally veinlets, NOT the high grade veins. So, WITHOUT high grade veins, its plain to see how these exposed areas of alteration are economical on their own. Also keep in mind that the recent trenching was trying to expose more of these same type of areas to get some bulk samples which are better than grab samples. These bulk samples will give the TRUE picture of the MINABLE grade requiring no further testing of these areas prior to mining. It never fails, I got myself pumped up again, I do a bit more digging, and look what I see!