16th Oct 2014 07:00
Tengri Resources
("Tengri" or "the Company")
Near-surface and higher-grade gold system confirmedat Taldybulak Gold-Copper Deposit, Kyrgyz Republic
· Results confirm the existence of a near-surface and higher-grade gold sheeted-vein system within the Taldybulak deposit. They include:
o 26 metres at 1.39 g/t Au, from 8 metres depth (TB0100),
o 24 metres at 2.32 g/t Au, from 46 metres depth (TB0100),
o 24.8 metres at 2.00 g/t Au, from 15.2 metres depth (TB0101),
o 32.5 metres at 2.20 g/t Au, from 95.5 metres depth (TB0101),
o 28.3 metres at 2.70 g/t Au, from 160 metres depth (TB0101),
o 12 metres at 1.56 g/t Au, from surface (TB0102), and
o 15 metres at 2.67 g/t Au, from 52 metres depth (TB0102).
· Mineralised zone remains open both deeper and at shallower depths;
· Preliminary laboratory tests demonstrate the occurrence of coarse gold, which might be efficiently recovered in a simple gravity separation circuit; and
· 2,000 metre diamond drilling programme on track, aimed at delineating a shallow, significantly higher-grade deposit which may be suitable for low-CAPEX development, mining and processing.
Tengri Resources (AIM: TEN), the mining exploration and development company focused on low-cost gold-copper projects in Kyrgyz Republic, is pleased to announce initial results from the diamond drilling programme at its 100% owned Taldybulak Project, which commenced on 1 August 2014.
The drillholes are part of the 12 hole, 2,000 metre drilling programme, designed to test the near-surface portion of a sheeted-vein system; a higher-grade gold domain located within the deposit. This section of the sheeted-vein system was not well drilled by previous operators and therefore may represent a significant opportunity to grow to the Taldybulak Project's resource inventory and provide optionality around the development of the project if a near-surface, higher-grade gold resource can be defined.
Taldybulak is large gold-copper porphyry deposit containing mineral resources of 6.73 million ounces of gold and 1.67 billion pounds of copper. The Indicated and Inferred mineral resource estimate gives a global average gold grade of 0.46 g/t Au. The recent drill results announced today show significantly higher gold grades (up to 5 times higher) than the average for the entire deposit and therefore confirm the existence of a near-surface and higher-grade gold sheeted-vein system within the Taldybulak deposit. For completeness and easy reference, the Taldybulak global resource statement is included as table 3 below.
The first drillhole (TB0099) yielded no significant mineralisation as it was drilled into a post-mineralisation dyke, now interpreted to run along the edge of the sheeted-vein domain. Subsequently, the three other drillholes (TB0100, TB0101 and TB0102) intersected significant sheeted-vein style mineralisation from the surface.
The results confirm the upward continuity of high-grade gold veins, intersected in deeper drillholes drilled by previous explorers. The structural knowledge about Taldybulak is now reaching a high level whereby it is possible for the Company to effectively target the auriferous sheeted-vein domain.
Table 1 shows the individual assay results. Table 2 shows collar details from the first four drill holes.
Table 1: Taldybulak Project Drilling Results
DH No. | From (m) | To (m) | Interval | Au (g/t) | Cu (%) | Mo (g/t) | Interval description |
(m) | |||||||
TB0099 | 72 | 77 | 5 | trace | trace | trace | post-mineralisation dyke |
77 | 83 | 6 | 0.12 | 0.15 | 176 | contact siltstone-porphyry | |
83 | 115 | 32 | trace | trace | trace | post-mineralisation dyke | |
TB0100 | 0 | 163.5 | 133.1* | 0.99 | 0.27 | 60 | sheeted-vein domain |
excluding* | 95.2 | 125.6 | 30.4 | trace | trace | trace | post-mineralisation dyke |
including | 8 | 34 | 26 | 1.39 | 0.36 | 15 | oxide in fractures |
including | 24 | 32 | 8 | 2.06 | 0.33 | 12 | oxide in fractures |
including | 46 | 70 | 24 | 2.32 | 0.46 | 79 | sheeted quartz veins |
including | 57 | 68 | 11 | 3.16 | 0.54 | 104 | sheeted quartz veins |
TB0101 | 1 | 188 | 164.4* | 1.40 | 0.14 | 42 | sheeted-vein domain |
excluding* | 77.6 | 85.6 | 8 | trace | trace | trace | post-mineralisation dyke |
including | 15.2 | 54.6 | 24.8 | 2.00 | 0.36 | 51 | oxide in fractures |
including | 32.6 | 54.6 | 7.4 | 4.78 | 0.50 | 47 | oxide in fractures |
excluding* | 34 | 48.6 | 14.6 | trace | trace | trace | post-mineralisation dyke |
including | 95.5 | 128 | 32.5 | 2.20 | 0.10 | 43 | sheeted quartz veins |
including | 95.5 | 99.4 | 3.9 | 5.52 | 0.16 | 85 | sheeted quartz veins |
including | 111 | 118 | 7 | 3.06 | 0.11 | 40 | sheeted quartz veins |
including | 159.7 | 188 | 28.3 | 2.70 | 0.08 | 62 | sheeted quartz veins |
including | 170 | 183 | 13 | 4.56 | 0.08 | 60 | sheeted quartz veins |
TB0102 | 0 | 154.7 | 129.2* | 1.00 | 0.16 | 61 | sheeted quartz veins |
excluding* | 76.2 | 94.7 | 18.5 | trace | trace | trace | post-mineralisation dyke |
excluding* | 97 | 104 | 7 | trace | trace | trace | post-mineralisation dyke |
including | 0 | 12 | 12 | 1.56 | 0.25 | 6 | oxide in fractures |
including | 52 | 67 | 15 | 2.67 | 0.13 | 62 | sheeted quartz veins |
* these intervals are split by a barren dyke: e.g. mineralised interval of 7.4 metres at 4.78 Au g/t between 32.6 metres and 54.6 metres depth is split by a barren dyke between 34 metres and 48.6 metres.
Table 2: Taldybulak Drillholes Collar Details
DH No. | Zone 44 N UTM | RL (m) | Porphyry Domain | Dip(° negative down) | Azimuth (true °) | Final Depth (m) | |
East | North | ||||||
TB0099 | 13,316,230 | 4,715,535 | 2,027 | Contact/dyke | -70 | 37 | 115 |
TB0100 | 13,316,348 | 4,715,489 | 2,044 | Sheeted-vein | -50 | 27 | 173 |
TB0101 | 13,316,444 | 4,715,378 | 2,010 | Sheeted-vein | -60 | 357 | 207 |
TB0102 | 13,316,445 | 4,715,376 | 2,010 | Sheeted-vein | -80 | 170 | 154.7 |
Follow up "screened fire assay" tests on selected high-grade gold samples show that a large portion (at an average of 32% and up to 49%) of the gold is "coarse-grained" (greater than 75 micron). This is a strong indication that significant gold might be efficiently recovered in a gravity gold concentrator and subsequently refined on site into gold doré bars. Production of gold doré, which would be separate from the main gold-copper concentrate product, has multiple potential benefits to the project including reduced capital and operating costs, and improvements to overall gold recovery, flexibility in sales and marketing, cash flows and income security. In order to test potential gravity gold recoveries, metallurgical testing is planned.
Mr Bruce Lumley, Chief Executive Officer of Tengri Resources commented:
"The first assay results from Taldybulak represent another early achievement for Tengri. The grades intersected confirm that the Taldybulak deposit hosts a significantly higher-grade gold system within the project's existing SAMREC compliant global mineral resource footprint.
The occurrence of coarse gold in some high-grade intervals may prove an excellent opportunity for the Tengri team to develop Taldybulak, targeting to efficiently recover the coarse gold via a relatively simple, low CAPEX and OPEX gravity separation circuit.
As previously reported, the aim of this drilling programme is to delineate a shallower, significantly higher-grade deposit, capable of becoming a stand-alone mine or benefitting from development and operational synergies with our nearby Andash deposit in the Talas Valley. These results clearly further confirm the potential for such a deposit as we eagerly anticipate a positive outcome from the remainder of the drilling programme."
Further information is available in the Taldybulak Presentation uploaded today on Tengri Resources' website within the Presentations section: http://www.tengriresources.co.uk
Table 3: Taldybulak Global Mineral Resource Estimate (SAMREC 2007)
Classification | Quantity | Au | Au | Cu | Cu | Mo | Mo |
(Mt) | (g/t) | (Moz) | (%) | (Mlb) | (%) | (Mlb) | |
Indicated | 116.5 | 0.61 | 2.27 | 0.19 | 488 | 0.01 | 26 |
Inferred | 336.2 | 0.41 | 4.45 | 0.16 | 1,178 | 0.01 | 79 |
Total | 452.7 | 0.46 | 6.73 | 0.17 | 1,666 | 0.01 | 105 |
A full summary of the mineral resource estimate is contained within the Company's Admissions Document published on 18-06-2014.
Competent Person Statement
The information in this announcement that relates to Exploration Targets and Exploration Results is based on data compiled by Adriaan van Herk, Doctorandus Geology, a Competent Person who is a Member of The Australian Institute of Geoscientists. Mr van Herk is Geology Manager of the Company. Mr van Herk has sufficient experience, which is relevant to the style of mineralisation and type of deposit under consideration and to the activity, which is being undertaken to qualify as a Competent Person as defined in the 2012 Edition of 'Australasian Code for Reporting of Exploration Results, Mineral Resources and Ore Reserves'. Mr van Herk consents to the inclusion in the announcement of the matters based on his information in the form and context in which it appears.
ENDS
For further information, please contact:
Tengri Resources |
|
Josh Ryan | +44 20 3301 9346 |
finnCap Ltd (Nomad) |
|
Matthew Robinson/Grant Bergman/James Thompson | +44 20 7220 0500 |
Peterhouse Corporate Finance Limited (Corporate Broker) |
|
Heena Karani | +44 20 7469 0936 |
Tavistock Communications (PR and IR Adviser) |
|
Nuala Gallagher/ Emily Fenton/ Jos Simson | +44 20 7920 3150 |
Notes to Editors
Tengri Resources (AIM: TEN) is a mining exploration and development company focused on low-cost gold-copper projects in Central Asia.
The Company seeks to add portfolio value by applying a phased approach to project development. Its most advanced project is the Andash Mining Project (TEN 100%) which has JORC compliant resources of 682koz of gold and 170Mlb of copper. Tengri also owns the large scale Taldybulak deposit (TEN 100%), which has SAMREC compliant resources of 6.8Moz of gold and 1.66bnlb of copper, and the Bashkol project (TEN right to earn 70%), located 60km along strike from the producing Kumtor Gold Mine.
The Company listed on AIM in July, 2014. Tengri's board and management are highly experienced in Central Asia, with mining operational and financial career backgrounds.
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