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Norra Norrliden and Eva Polymetallic Deposits (Zinc, Gold, Copper, Silver, Lead)
In September, 2011 Gold-Ore and Kopparberg Minerals AB announced an agreement to combine their base metal assets in the Skelleftea mining district in Sweden into a company, equally owned by Gold-Ore and Kopparberg. The company, Norrliden Mining AB, will own the Norra Norrliden and Eva volcanic hosted massive sulphide (VHMS) deposits, several exploration permits and an extensive data base including proprietary geochemical surveys and airborne geophysical surveys covering much of the prolific Skelleftea mining district.
The Skelleftea mining district is a proterozoic greenstone belt that hosts over 100 zinc-copper-gold-silver-lead VHMS deposits of which 28 have been mined historically. Currently, Boliden AB, the third largest copper/zinc miner in Europe, is mining four VHMS deposits in the belt supplying ore to their central processing plant. The Skelleftea district has produced over 161 million tonnes at an average grade of 3.0% Zn, 0.7% Cu, 1.9 g/t Au, 47 g/t Ag and 0.8% Pb.
Norra Norrliden Deposit
The Norra Norrliden Deposit was first acquired from North Atlantic Natural Resources AB, a wholly-owned subsidiary of Lundin Mining Corp. in May, 2008. A 90% interest in the property was purchased for 3 million Gold-Ore common shares. The deposit was found in 1960 and is defined by 138 diamond drill holes. In May 2008, Gold-Ore commissioned Adam Wheeler C.Eng., Eur. Ing., an independent qualified person to conduct a resource estimate that was compliant with National Instrument 43-101. The resultant resource estimate shown in the following table was classified according to the JORC code.
Resource
Class |
Tonnes |
Zn % |
Cu % |
Au
g/t |
Ag
g/t |
Pb % |
Measured +
Indicated |
1,476,000 |
3.54 |
0.74 |
0.63 |
50.8 |
0.36 |
| Inferred |
867,000 |
1.87 |
0.72 |
0.40 |
30.9 |
0.19 |
Eva Deposit
The Eva deposit is 100% owned by Norrliden. This polymetallic base and precious metal deposit is located approximately 32 kilometres northwest of Norra Norrliden. The deposit was found in 2005 from the results of an airborne electromagnetic survey. A National Instrument 43-101 compliant resource estimate was based on 23 diamond drill holes. The results are shown below.
Resource
Class |
Tonnes |
Zn % |
Cu % |
Au
g/t |
Ag
g/t |
Pb % |
| Inferred |
5,160,000 |
2.4 |
0.30 |
1.0 |
40.0 |
0.4 |
Data Base
The data base includes propriety soil geochemical sample results covering the district. The Bjorkdal gold mine was discovered in 1983 as the direct result of this sampling program. In addition, Norrliden owns the propriety results of an electromagnetic and magnetic airborne survey covering much of the district. The rich Storliden copper/zinc massive sulphide deposit was found as a result of the airborne survey.
Plan
The objective of Norrliden is to define sufficient base metal mineralization that, together with Norra Norrliden and Eva deposits, will justify a central processing plant. The infrastructure in this part of Sweden is extremely well developed and affords the ability to truck ore inexpensively. The extensive data base provides Norrliden with excellent tools to identify additional mineralization in the belt.
Gold-Ore and Kopparberg are currently in the process of finalizing their letter of agreement regarding the two deposits, and capitalizing the private company, Norrliden Mining. Gold-Ore and Kopparberg will fund Norrliden equally until such time that the company is able to raise funding independently.
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