Blackheath Reports 7.98 Metres of 2.11% WO3 at Covas Tungsten Project
- Details
- Category: Tungsten's News
- Published on Monday, 24 December 2012 17:57
Collected by Chinatungsten Online-Blackheath Resources Inc. (TSX VENTURE:BHR) is pleased to report results from the first two drill holes on the Covas Tungsten Project in northern Portugal. The Phase 1 drilling program is designed to confirm and test known skarn-related mineral zones and extensions as well as new targets at Covas. Five diamond drill holes have been completed so far on the Telheira zone.
Assay intervals in the first two drill holes are:
· 2.11% WO3 over 7.98 metres including
4.24% WO3 over 2.55 metres in Hole CO 7/12
· 0.71% WO3 over 4.15 metres including
1.15% WO3 over 2.42 metres in Hole CO 8/12A
The tungsten mineral scheelite is visible in the remaining three holes at Telheira and assays are pending. Assays are conventionally reported as percentage WO3 (tungsten trioxide). The drill has now been moved to the Lapa Grande target zone where three additional holes have been completed and core has been logged and submitted for assay.
"These initial results have exceeded our expectations and confirm our enthusiasm for the Covas Tungsten Project," said James Robertson, President and CEO of Blackheath Resources. "We look forward to additional results over the next few weeks and plan to add a second drill rig to move the program towards completion by the end of the year."
Results from the first two drill holes validate the high grade nature indicated by historic results, obtained in the late 1970''s as well as confirm the general thickness of the mineralization.
Hole ID |
TD |
From |
To |
Intercept |
WO3 |
CO 7/12 |
77.90 |
44.57 |
52.55 |
7.98 |
2.11 |
Including |
|
50.00 |
52.55 |
2.55 |
4.24 |
|
|
||||
CO 8/12A |
95.60 |
81.40 |
85.55 |
4.15 |
0.71 |
Including |
|
81.40 |
83.82 |
2.42 |
1.15 |
|
|
|
|
|
|
Notes:
1. Tungsten analyses were performed by ALS Chemex, in Vancouver, Canada, using standard assay techniques.
2. CO 7/12 was collared approximately 16 metres west of historic drill hole 79-13 (7.46 metres @ 2.43% WO3) and 16 metres east of historic drill hole 77-64 (6.3 metres @ 1.65% WO3).
3. CO 8/12A was collared approximately 25 metres west of historic drill hole 77-64 and 25.5 metres east of historic drill hole 77-69 (2.39 metres @ 0.89% WO3 within a greater interval of 6.71 metres @ 0.41 % WO3)
4. CO 8/12A was a re-drill of CO 8/12, which was lost due to technical reasons at 35.30 metres.
5. Both CO 7/12 and CO 8/12A are vertical drill holes, and intercepts are considered to represent the true thickness of the flat-lying mineralized zones.
The goals of this early drilling at the Telheira and Lapa Grande targets are to:
1. Confirm the nature and grade of the previous work;
2. Confirm the continuity of the mineralization; and
3. Begin to expand the size of the known mineralization at each of the target areas.
Following completion of the work at Telheira and Lapa Grande, the Company will move onto further confirmation drilling of known mineralization in the Castelo target area. All three of these first pass mineral targets were reported to contain close-to-surface, high grade tungsten mineralization within flat-lying units of iron sulfide-rich skarn rocks. Subsequent drilling during Phase 1 will attempt to identify new zones of tungsten mineralization around the Skarn Ring. The drill locations have been selected and prioritized through the use and interpretation of geological mapping, rock chip and soil sampling, and ground geophysical surveys. In addition, at least one deeper hole is planned to test a potential gold-tungsten target within the Covas Dome area. The Phase 1 drilling program is expected to total up to 2,100 metres in possibly 15 drill holes.
Covas is a past producer of tungsten and historic resources (indicated and inferred) on the property have been estimated at 922,900 tonnes of 0.78% WO3 by Union Carbide in 1980, based on work including 327 drill holes on the property. Mineralization is open to expansion. The price of tungsten has increased significantly in recent years and is currently approximately $33 per kilogram of contained tungsten trioxide.(These resources are historic in nature, prepared by Union Carbide Corp. in 1980 and are considered relevant. However, a qualified person has not done sufficient work to classify the historical estimates as current mineral resources and the Company is not considering the historical estimates as current mineral resources.)
The Covas property is located about 100 kilometres north of Porto, Portugal''s second largest city. Blackheath holds the property under an option from Avrupa Minerals Ltd. to earn up to an 85% interest in a joint venture in the project, after incurring minimum exploration expenditures of EUR1 million in two stages to earn a 70% interest followed by completion of a prefeasibility study to earn the additional 15% interest.
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