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Havilah Resources Ltd.
Summary
| Project: | Kalkaroo | |
|---|---|---|
| Deposit: | Kalkaroo | |
| Location: | Australia | |
| Commodities: | Cobalt-Copper-Gold | |
| Date: | 3/7/2018 | |
| Report Code: | JORC | |
| Report Type: | Resource Estimation | |
| Project Stage: | Pursuing Resource Increase/Upgrade | |
| Report details: | 7-3-2018: Havilah Resources Ltd. announces a Resource Estimation report for its Kalkaroo deposit at the Kalkaroo project. Inferred Cobalt Resource added to the existing copper-gold resource at Kalkaroo. Havilah Resources Limited (Havilah) is pleased to re | |
| Resources: | (Resource, Inf.): 193.3Mt @ 120ppm Co for 23.2kt Co contained at Kalkaroo | |
| CP/QP: | [Resources]: Robert Dennis (Runge Asia Ltd.) | |
| ABSTRACT: | Havilah Resources Limited (Havilah) is pleased to report that it has estimated an Inferred Resource for cobalt in its Kalkaroo copper-cobalt-gold deposit, near Broken Hill, of 193.3 million tonnes @ 120 ppm (parts per million) cobalt containing approximately 23,200 tonnes of cobalt metal. This new Inferred Resource for cobalt was estimated by Havilah completely within the recently reported Kalkaroo copper-gold sulphide resource shell, that was independently determined by RPM Global (refer to ASX announcement 30 January 2018) Virtually all of the cobalt within the Kalkaroo resource is contained within the iron sulphide mineral, pyrite. It is planned that the cobaltian pyrite will be recovered as a concentrate during the copper flotation process. Assuming an overall 3% pyrite content in the Kalkaroo deposit, recovery of a high purity cobaltian pyrite concentrate by flotation equates to a maximum 33 times concentration factor for the cobalt. The concentration process therefore increases the cobalt grade to potentially 0.40% in the cobaltian pyrite concentrate from the overall Kalkaroo cobalt content of 120 parts per million. This makes it an attractive grade cobalt feedstock for subsequent processing to recover cobalt, and also significant amounts of associated gold, which is known from previous metallurgical tests. Establishing the most efficient metallurgical process for recovery of cobalt from cobaltian pyrite is an important focus of Havilah’s current metallurgical test work. Accordingly, Havilah’s recent cobalt recovery initiative with Cobalt Blue Holdings (ASX:COB), (refer to ASX announcement 1 February 2018) involves testing of a sample of Mutooroo massive sulphide ore by COB’s innovative proprietary cobalt recovery process. Havilah is also conducting its own leach testing program in parallel, including bacterial methods that have been successfully employed on many other pyrite ores. | |
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