Hallo, anbei mal ein Überblick was sich bezüglich der Resoucenschätzungen seit 2008 getan hat:
2008 Cardiac Creek Deposit Mineral Resource
The Cardiac Creek deposit inferred mineral resource -- at a series of zinc cut-off grades (2% to 7%) -- is provided in the table below. The 23.595 million tonnes at a zinc cut-off grade of 5% contains 3.95 billion lbs of zinc, 0.78 billion lbs of lead and 8.95 million oz of silver.
Cardiac Creek Deposit Inferred Mineral Resource
Cut Off Grade % Zinc Tonnes (000's) Zinc (%) Lead (%) Silver(g/t) Zn+Pb(%)
5 23,595 7.60 1.50 13.0 9.10
2012 The Company has outlined a NI 43-101 compliant mineral resource including an indicated resource of 12.7 million tonnes grading 8.4% zinc, 1.7% lead and 13.7 g/t silver (at a 5% zinc cut-off grade) and an inferred resource of 16.3 million tonnes grading 7.4% zinc, 1.3% lead and 11.6 g/t silver (at a 5% zinc cut-off grade). Using this estimate, the deposit contains 2.4 billion pounds of zinc, 472 million pounds of lead and 5.6 million ounces of silver in the indicated category, and 2.6 billion pounds of zinc, 482 million pounds of lead and 6.1 million ounces of silver in the inferred category (at 5% zinc cut-off).
2012 Cardiac Creek Deposit: Mineral Resource Summary
Cut-off Grade (Zn %) ktonnes Zn (%) Pb (%) Ag (gpt) Combined Zn+ Pb (%)
Indicated §
5 12,731 8.38 1.68 13.7 10.06
Inferred §
5 16,287 7.38 1.34 11.6 8.72
In May 2016, the Company announced a revised NI 43-101 compliant resource calculation for the Cardiac Creek Deposit. The resource now measures: The resource now measures:
Indicated 19.6 million tonnes grading 8.2% zinc, 1.6% lead and 13.6 g/t silver (at a 5% zinc cut-off )
Inferred 8.1 million tonnes grading 6.8% zinc, 1.2% lead and 11.2 g/t silver (at a 5% zinc cut-off )
Wie mann erkennen kann, fand hauptsächlich eine Verschiebung von inferred zu indicated statt.
Bin mal gespannt wie es weiter geht. Schlimmstenfalls wird bis 2020 gebohrt und dann eine neue Schätzung herausgegeben....nein, hoffentlich nicht.
Gruß
Ebbe
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