Australian tungsten developer,
Tungsten Mining's CEO
The Company owns 100% of the tungsten and molybdenum rights on a group of tenements that have been the subject of significant previous evaluation for tungsten and molybdenum. The Company also has the rights to all byproducts from the mining of tungsten and molybdenum. Near surface Mineral Resources have been delineated at the Mulgine Trench and Mulgine Hill deposits, which have been the subject of ongoing evaluation by the Company.
In
In
Mulgine Trench Mineral Resource
The previous Mulgine Trench Mineral Resource estimate was completed by
The reported Mineral Resource is constrained within limits defined by a pit shell with an ammonium paratungstate (APT) price of
The tungsten and molybdenum reported within the
Geology
Tungsten-molybdenum mineralisation at Mt Mulgine is associated with the Mulgine Granite - a high-level leucogranite forming a 2km stock that intrudes the Mulgine anticline. The granite intrudes a greenstone sequence composed of micaceous schists, amphibolite and talc-chlorite schist which were formerly metasediments, mafic and ultramafic rocks respectively. The Mulgine Granite is associated with intense hydrothermal alteration, with greisenisation and quartz veining of the granite and widespread pervasive phlogopite alteration and sulphidation on the north and northwest flanks of the granite.
The mineralised horizon at Mulgine Trench is a 140 to 220 metre thick zone that has been delineated over 1.4 kilometres of strike and dips shallowly (25 - 40 degrees) towards the northwest. Stratigraphy consists of mafic to ultramafic amphibolites with at least three narrow banded iron formation (BIF) units. Numerous felsic units intrude the sequence, and these are interpreted as being associated with the Mulgine Granite intrusion.
Tungsten mineralisation dominantly occurs as scheelite in veins or adjacent to vein margins or as coatings on fractures or disseminated in greisen units/veins. There are two principal sets of quartz veins, a dominant conformable set that dips shallowly (25 - 40-degree) towards the northwest and a steeper set (50 - 60-degree) dipping in the same direction.
Mineralisation is associated with quartz veins generally less the 10cm and strong mineralisation tends to be associated where quartz veining averages 15 - 20% of the total rock volume.
Metallurgy
Mineralogical and metallurgical studies on the range of ore types from the Mulgine Trench deposit show scheelite well liberated at coarse sized fractions, resulting in high grades and recoveries via simple gravity techniques. Molybdenum was liberated at finer sized fractions and showed high recovery and upgrades through a flotation circuit. 'Sighter' leach tests completed on two composites of low grade oxide samples resulted in a high extraction rate for gold. In addition, historical test work showed that accessory minerals gold and silver were recovered into the sulphide flotation concentrate as by-products in the process of recovering molybdenum. Evidence gathered to date show that no major metallurgical problems are expected to affect the overall viability of the project.
Contact:
Tel: +61 8 9486 8492
Email: craig.ferrier@tungstenmining.com
About Tungsten Mining
Australian tungsten developer,
Tungsten has the highest melting point of all elements except carbon - around 3400-degreeC giving it excellent high temperature mechanical properties and the lowest expansion coefficient of all metals. Tungsten is a metal of considerable strategic importance, essential to modern industrial development (across aerospace and defence, electronics, automotive, extractive and construction sectors) with uses in cemented carbides, high-speed steels and super alloys, tungsten mill products and chemicals. Through exploration and acquisition, the Company has established a globally significant tungsten resource inventory in its portfolio of advanced mineral projects across
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