Mount Alexander
Zinc Co holds rights to all minerals other than tungsten and molybdenum in the Mt Alexander prospect, located 15 kilometres south of the Nanutarra Roadhouse on the Northwest Coastal Highway, around 370 kilometres north of Carnarvon.
Location and Geology of the Mt Alexander Project
In the vicinity of Mt Alexander, a sequence of schist, amphibolite, banded iron formation, dolomite, marble and skarn, quartzite and black shale of the Lower Proterozoic Gascoyne Block, extensively intruded by acid intrusive phases, dolerite dykes and quartz veins.
13 shallow RC drill holes drilled in the early 1980s testing beneath a siliceous gossan outcrop with disseminated galena ('Cyprus gossan') returned intersections including; 8 metres @ 2.4% Zn, 0.95% Pb and 10 g/t silver.
Mount Alexander project selected drill hole intersections
| MARC-1 |
9356N |
60o to grid E |
2-6m |
4m @ 3.0% Zn |
| |
|
|
6-12m |
6m @ 4.7% Cu, 1.3% Pb, 126 g/t Ag |
| MARC-3 |
9358N
5725E |
60o E |
30-32m |
2m@ 0.9% Cu, 1.4% Pb, 15 g/t Ag |
| MARC-4 |
9320N
5699E |
60o E |
32-40m |
8m @ 2.4% Zn, 0.95% Pb, 10 g/t Ag |
| MARC-5 |
9291N
5677E |
60o E |
46-50m |
4m @ 3.15% Zn, 0.2% Pb, 7.5 g/t Ag |
Soil sampling over the entire 15 kilometres of strike of the folded dolomite/BIF sequence and defined two significant areas of lead soil anomalism, including a major anomaly coinciding with the 'Cyrus' gossan area. Surface rock chip sampling over the main siliceous gossan returned 42m @ 1.36% Pb, 1.08% Zn, 17.2 ppm Ag. Interestingly, the peak soil values occur in an approximately 200m long zone east of the eastern-most drill hole, and remain untested by drilling. A second anomaly was defined at the 'galena-cave'-'doser-cut' area, where patchy lead anomalism over 1500m strike coincides with intermittent exposures of the target dolomitic shale unit with known galena occurrences. Rock chip sampling of two galena showings returned 0.3m @ 62% Pb, 0.31% Zn, 440 ppm Ag, and a further 4m @ 3.15% Pb, 0.92% Zn, 29 ppm Ag at 'Galena Cave' and 2m @ 62% Pb, 0.32% Zn, 420 ppm Ag and a further 10m @ 204 ppm Pb, 0.47% Zn at the 'dozer-cut' prospect. Two drill holes returned thin, sub-economic intersections - MADD 4 "Galena cave' 3.1m @ 0.11% Pb, 1.6% Zn incl. 0.15m @ 10.4 Zn, and MADD3 "dozer-cut' 0.3m @ 0.19% Pb, 0.11% Zn.