Elizabeth Hill

(M47/342, M47/343)

The Elizabeth Hill project is a long standing project of East Coast and is located 25km south of Karratha Western Australian (Figure 1).

A  Sub-audio Magnetics (SAM) and Electromagnetic (EM) survey identified anomalies (Figure 2) that were drilled in 2010. Unfortunately the results for individual assays did not get above 6.8g/t Ag over 4m. Whilst it is believed that the drill program has been a technical success, the results are not of the tenor previously mined from the underground mine. 

The Mustang Prospect remains untested and is identified by a shallow <50 metre deep EM anomaly.

Figure 2: Drill Results overlying SAM

Geology
The holes drilled intercepted granite, monzogranite and (assumed) intrusive gabbro and pyroxenite units. The gabbro and pyroxenite occurs as moderately west dipping, rafts of varying width (2m to +50m) within the granite.

The drilling programme has shown that the gabbroic units are more extensive than previously thought, based on the current GSWA mapping – potentially opening up further zones of prospectivity in the immediate area.

A review of the program will be required to assess the potential of the newly identified gabbroic zones and whether potential exists for the development of nickel sulphides.

Previous Mining and History

Silver was mined by East Coast and Legend Mining from the Elizabeth Hill underground mine between 1998 and 2000. 16,800 tonnes of ore grading 2,100 g/t silver (70 oz/t) was mined to produce 1,170,000 ounces of silver.

Exploratory efforts were focused to the south of Elizabeth Hill until December 2002 in an effort to delineate a repeat of the Elizabeth Hill silver deposit, but drilling failed to locate any further mineralisation.