The Hedland project lies approximately 42 kilometres south east of the town of Port Hedland, in the Pilbara region of Western Australia. Surrounding infrastructure includes sealed highway access to Port Hedland. The Goldsworthy Area is located 10km north east of the Hedland Area. The sealed Great Northern Highway transects the Goldsworthy Area and connects the major coastal towns of Port Hedland and Broome. The Goldsworthy Railway line also runs east-west through the Goldsworthy tenements. Station tracks provide access to the tenements north and south of the highways.
Background and Geology
The Hedland project consists of two exploration licences and an application for an exploration licence proposed to be acquired 100% by Shaw River. This will also allow access via the sealed Marble Bar to Port Hedland Highway which transects the project.
The Hedland project covers a belt of ground approximately 40 kilometres in length and up to 16 kilometres wide that trends north east to south west. The tenements are bound by the Mallina and Tabba Tabba shears to the west and east respectively. Both these structures and crustal scale faults are widely accepted to be key contributing factors in the formation of local gold and base metal deposits at Turner River, Indee, Wingina Well, Orchard Well and Supply Well.
Shaw River's tenement E45/2569 overlies this projected extension and the intersection of the Tabba Tabba and Mallina Shear Zones.
Significant intersections included:
- 1m at 6.65 g/t gold from 36m in STRC013
- 2m at 1.15 g/t gold from 47m in STRC006
- 8m at 0.69 g/t gold from 130m including 3m @ 1.54g/t gold from 133m in STRC012
The Goldsworthy Project area is largely comprised of De Grey Supergroup rocks, including Paradise Plains Formation and Bookingarra Group equivalents. The southern part of E45/2380 (south of the Pardoo Fault) is underlain by the Carlindi Granitoid Complex and to the east, on E45/2917 and 3016, are basalts of the Warrawoona Group within the Goldsworthy Greenstone Belt. Further east, E45/3017 and 3183 include on-lapping Callawa Formation sediments of the Lambert Shelf (Mesozoic age) over the De Grey Group rocks.
The cover sequence of Mesozoic and Recent sediments ranges in thickness from 5m in the western half of E45/2380 to +50m east of the De Grey River on E45/3015. To the east on E45/3183 and 3017 the thickness increases in a northerly direction from 5-10m in the south, to over 100m north of E45/3017.
Exploration summary for Hedland and Goldsworthy includes:
- Completion of 5,485m of RC and 11,373m of RAB/Aircore drilling since July 2007 focused on follow up testing of soil and previously drilled gold anomalies.
- Encouraging drilling results received from shallow 1,040m of RAB drilling in August 2008 over a 300m width, encountered elevated gold with 20 adjacent anomalous gold intersections >0.1 g/t Au on the Mallina Shear Zone at the intersection with the Tabba Tabba Greenstone Belt.
- Drilling focused on testing 20 soil sampling targets over an 8km target area. Drill logging confirms strong correlation between anomalous gold and arsenic in soils and mineralisation in drilling.
- Untested gold targets remain over 9km of strike.
- Soil sampling programs over the adjacent Goldsworthy Project 10km north east of the Hedland Project has generated multiple new zinc and gold drill targets under shallow cover not previously identified or tested.
- During 2010 Shaw commissioned a detailed review of its base metal and gold portfolios by Tony Morgan of Mincorp Consultants. The completed base metal & gold review document will allow Shaw River to finalise investment options for its 100% owned Pilbara mineral projects, although for the medium term the focus will continue to be on its highly prospective manganese portfolio.