Base metal deposits

Broken Hill style mineralisation

In addition to cobalt, the Company’s tenements contain numerous rock types, structural zones and metal anomalies which include important indicators of possible nearby zinc, lead and silver mineralisation of the Broken Hill style.

The Broken Hill deposit was discovered in 1883 and is still producing after more than 127 years. It is the largest deposit of lead, zinc and silver ever discovered and has had an estimated direct value to the Australian economy of over $A80 billion.

Geology map of project area showing locations of main prospects

Figure 4. Geology map of project area showing locations of main prospects.

BPL is fortunate to have the consulting services of Wolfgang (‘Wolf’) Leyh, an experienced field geologist who has spent most of the last 35 years exploring for base metal deposits in the Broken Hill area. Wolf has identified more than 13 base metal targets in the Company’s tenements. Please refer to Figure 4 below for a detailed geology map of project areas. Two of these deposits (Pyramid Hill and Himalaya North) have been mapped by Wolf and tested by shallow drill holes. Both have shown excellent results which indicate that there could be underlying or nearby mineralisation of significant grade and tonnage. 

2012 drill testing at the Railway Cobalt Deposit has intersected several strongly anomalous base metal zones. BER040 penetrated high zinc and silver zones near the bottom of the hole and close to the western edge of the cobalt mineralized quartz-albite –pyrite gneiss and these intersections appear to indicate increasing zinc and silver grades with depth in this part of the deposit.

Anomalous Zn-Ag intervals in BER004 include;

  • 108-111m (down hole) of 1.3% Zn, 15g/t Ag and 1.3lb/t Co
  • 120-126m (down hole) of 3.5% Zn, 6g/t Ag and 2.41lb/t Co