Vancouver — The latest drill results tabled by Tiberon Minerals (TBR-V) continue to show promising signs of an open-pittable tungsten resource at the Nui Phao project in Vietnam.
Drilled late last year, hole 11 returned 12 metres grading 0.51% tungsten, 0.4% copper, 0.17% bismuth and 0.46 gram gold per tonne before it was abandoned, due to mechanical problems, at 50 metres down-hole.
Hole 27 cut two major zones of tungsten mineralization. From surface to 11 metres, the first zone returned 0.76% tungsten, 0.37% copper, 0.42% bismuth and 0.94 gram gold, followed by 77 metres averaging 0.31% tungsten, 0.26% copper, 0.14% bismuth and 0.36 gram gold. The second zone returned 0.63% tungsten, 0.16% copper, 0.07% bismuth and 0.28 gram gold over 46 metres.
Hole 28 was drilled at a 60 angle to the south, from the same pad as hole 23, and cut 5 metres grading 0.38% tungsten, 0.11% copper, 0.11% bismuth and 0.1 gram gold. This hole was designed to test a mineralized fault, but no such structure was intersected.
Mineralization on the property is hosted in skarns and their greisenized or retrograde equivalents. Greisenization refers to a replacement process whereby quartz, fluorine and micas (as well as accessory minerals, such as tourmaline, rutile, cassiterite and wolframite) replace skarns or granites. At Nui Phao, greisenization consists of fluorine, beryllium, tungsten, tin and limited rare earth metals, which have replaced granitic dykes and earlier-formed skarn units.
With four rigs turning on the property, Tiberon aims to test a 500-metre section of a geophysical anomaly to the east of the current holes, and to continue delineation drilling over the known mineralization.
The Nui Phao project lies in the Dai Tu district of Thai Nguyen province, about 80 km northwest of Hanoi.
The junior has begun metallurgical work and hopes to begin a prefeasibility study later in the year.
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