A New World Class Gold Project in Central Asia
Kokkus is a TAG (Thermal Aureole Gold) Style deposit, sitting above a massive granodiorite intrusion, which has followed the Yntaly shear zone upward. The Yntaly shear zone is over 1,000km long and also controls the massive Bozshakol Cu-Au deposit 420km further to the north east of Kokkus.
The main Kokkus ore zones, are controlled by a large-scale overturned anticline, with Au mineralization on both limbs, dipping shallow to the NNE, with widths that vary from 10m to 25m on the limbs and 65m in the high grade core. Currently the strike length is 540m and a width of 400m. The overturned anticline is plunging to the NW at approximately 40º. The controlling structures on Au mineralisation are a combination of strong axial plane cleavage, as well as old and more recent NE trusts, controlled by the massive Yntaly shear zone which is 20 kms wide in the Kokkus area and extends over 1,000km long to the NE. There is potential to extend the mineralisation to the south east, north west and east. See structural controls.
Alteration & Host Rocks
The Au is associated with massive pervasive silica -illite/sericite alteration over 3-4 sq kms of intensely deformed deep marine sedimentary sequence with most of the Au mineralization been in the more competent quartzite/ chert beds. The Au mineralization intersected so far is in three main ore zones K1, K2, and K3, which appear to be connected, to be determined by further drilling. The altered quartzite/chert beds are intersected by pyrite/Au bearing fine quartz veins, parallel to the axial plane cleavage or to the NE parallel to the Yntaly fault or both.
Previous oxide zone test work in 1992 indicates with a fine grind, (-75Um), a Au recovery of 70-74% using a gravity circuit, the head grade was 5g/t Au. Recent test work on a 1 ton of oxide sample with a realistic head grade of 1.3g/t Au, has confirmed an Au recovery of gravity of 40% and further CIP recovery of 87% giving a total of 85% Au recovery.
Kokkus Structural Controls
Kokkus Drilling Timeline
1200m DDH & 4000m RC drilling focus is around the existing resource area. Expected resource will be >1m oz Au JORC I & I. 90% of the drilling is completed.
Zones K1 & K3 appear to merge to form a much wider zone of 150m in width, DD22016 & 17 intersected a continuous zone of intense alteration from 30-200m, (170m wide Au zones-downhole)
Recent structural studies have identified the two main controls on the Au mineralization:
1. Axial plane cleavage within the very brittle chert/quartzite bedding, caused by a large scale anticline which dips steply to the north.
2. The intersection of the above with the pervasive NE faulting over many millions of years caused by the massive Yntaly shear zone, which is >20km wide in the Kokkus area. (The Yntaly fault controls the giant Bozshakol Cu-Au deposit 400km to the NE).
Stage 1 Drilling 2022
JORC Resource Estimate
95% of prospective ground remains to be tested, potential +5m oz au
163m @1.41g/t Au from 8m, 56.7m @5.65g/t Au from 64.3m & 84.1m @2.26g/t Au from 23m (finished in mineralisation)
Mapping & Sampling
Shows 4000 sqm of intense silica/ illite alteration from surface
22% of resource is oxide ore down to 40m. Metallurgical test work with head grade 1.3g/t Au, 40% recovery using gravity circuit, 87% using CIP - total recovery 92%
Mains Power & water are both available at the site
Currently increasing existing Sub Soil licence of 13 sq km by 50% to 19.5 sq km & renewing exploration period for another 3 yrs