The Paterson Project comprises the Havieron, Black Hills and Paterson Range East licences, covering over 385 square kilometres of under-explored ground in the Paterson Province in Western Australia prospective for iron-oxide-copper-gold (IOCG) and Telfer style gold deposits.
The Paterson region hosts several large gold and copper deposits such as Telfer (27M oz) and Nifty (2MT copper). The region has been subject to more recent exploration which has outlined several other deposits including Magnum (Au), Calibre (Au), O’Callaghans (Cu) and Maroochydore (Cu).
Regional targeting by the Company has highlighted the potential for a new IOCG district with multiple targets identified across the Company’s licences.
Geophysical data has outlined the Havieron target as covering approximately 1,000m x 1,000m. Depth to top of target is around 400m with these depths easily achieved with modern drilling equipment. Only six drill holes have been completed to date with all intersecting significant alteration and gold plus copper anomalism. Thick lower grade zones of gold and copper have been intersected and within these gold grades peak at 15.4g/t and copper to 2.5%. Current drill hole spacing is broad and so the core of Havieron represents an immediate resource definition drilling target.
The Black Hills area is regarded as having high potential for hosting gold deposits similar in style to Newcrest’s Telfer Mine. Historical work reported surface rock chip samples of up to 90g/t gold and drilling intercepts including 4m at 7.0g.t gold from 25m.
Although the region is remote infrastructure is good with several operating mines, sealed roads and formed tracks plus rail networks nearby which branch out from the regional industrial hub of Port Hedland 500km to the west.
The Paterson Project licences are located approximately 40 kilometres east of the prolific Telfer gold mine (owned by Newcrest) that has produced 27 million ounces of gold since it began operations in 1977. Other discoveries in the region include Magnum (Au) and Calibre (Au), both owned by Antipa Minerals, O’Callaghans (Cu), Maroochydore (Cu) and the recent Paterson North gold discovery by SIPA Minerals .
The Paterson Province is the northern portion of the Proterozoic Paterson Orogen. More recent exploration throughout several Proterozoic Orogens identified within the western parts of the Australian continent have resulted in the discovery of the large Tropicana gold deposit (7.9M oz) and large Nova nickel-copper deposit (10MT). Globally these Proterozoic Orogens are highly prospective for large deposits, and are often under-explored.
Alteration and mineralisation of those targets which have been drill tested at Havieron and Paterson Range East display similarities to IOCG-type deposits. Examples of these are the large Olympic Dam and Ernest Henry deposits in central and eastern Australia.
Prospectivity of the Paterson Province is widely recognised with several large industry participants present. These include Rio Tinto, Newcrest and Antipa. Greatland’s licences lie adjacent to Rio Tinto and Antipa.
Havieron and Paterson Range East
The Havieron target as outlined by geophysics is large, covering approximately 1,000m x 1,000m. During the period 1991-2003, Newcrest completed six diamond drill holes at Havieron. All holes intersected significant alteration and three holes intersected significant Au-Cu skarn style mineralisation. Hole HAC9101 intersected firstname.lastname@example.org/t Au, including email@example.com/t Au and 0.28% Cu with a peak gold value of 14.7g/t Au. Hole HAC9201 intersected firstname.lastname@example.org/t Au, including email@example.com/t Au and 0.22% Cu with a peak gold value of 15.4g/t Au. Mineralisation starts at 400 metres below surface. Mineralisation is open in all directions and at depth.
Following a review of regional geophysical and geochemical data over the Paterson project approximately fifty IOCG targets have been identified in the broader region, with around half in ground held by Greatland. The setting of these licences is on the western margin of a Proterozoic basin which ranges in depth from less than 100m below surface to more than 400m below surface.
Basement rocks of the basin are predominantly calcareous rich sandstones intruded by several late stage granitic bodies exploiting basin margin faults which have also provided a focus for ore fluids.
Historically, several of these targets have been subject to initial first-pass work and show promise at hosting mineralisation as seen at Havieron. The geophysical signature of these targets is very similar to that at Havieron. Basement rocks do not outcrop and Greatland intends to employ modern geophysical and geochemical methods to define targets prior to drill testing.
The Black Hills gold project lies adjacent to the Company’s Havieron licence.
There has been a reasonable amount of historical exploration work at Black Hills with several discrete zones of mineralisation identified over 5km of strike. Previous work by Newcrest Limited has outlined several zones of gold mineralisation in rocks equivalent to those of the large Telfer gold deposit (27m oz) which lies 30km to the west. Rock chip samples have returned up to 90g/t gold, and commonly 20g/t gold, with free (visible) gold in places. Historical drill intercepts include 4m at 7.0g/t from 25m, 5m at 2.3g/t from 25m, 2m at 3.4g/t from 23m and 2m at 1.29g/t from 10m. Historical drill spacing appears quite broad with holes at least 400m apart, some up to 600m. Additional work by the Company will include compilation of historical data, surface geochemistry, ground geophysics and RC drilling.
Gold prospects identified to date extend from Black Hills into the north western parts of the Havieron licence. Proterozoic sandstone and carbonate rocks of the Yeneena Group formations are present, including the Telfer Formation, in a domal structure which is the equivalent geology to that of the large Telfer gold deposit (27m oz) located 30km to the west.