DIZON MINES
Archived

Ag
19.43
USD/oz
-0.05
red
Data as of Apr 23, 2014 09:26AM UTC
Au
1,283.78
USD/oz
0.00
green
Data as of Apr 23, 2014 09:26AM UTC
Cu
3.01
USD/lb
0.47
green
Data as of Apr 17, 2014 12:00AM UTC


Key Facts
Status: Unknown
Type of Work: Open-Pit
Location: Philippines
                 85 km WNW of MANILA

Commodities: Silver, Gold, Copper
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Latest Information
February 28, 2005
From the 800 kg of drill sample collected, Medusa said that using conventional extraction methods, an average of 68% of the gold can be recovered. The bulk of the remaining gold is associated with the copper sulphides, chalcopyrite and pyrite and is the subject of an ongoing bioleach test program by BacTech.
February 28, 2005
From the 800 kg of drill sample collected, Medusa said that using conventional extraction methods, an average of 68% of the gold can be recovered. The bulk of the remaining gold is associated with the copper sulphides, chalcopyrite and pyrite and is the subject of an ongoing bioleach test program by BacTech.
December 2, 2004
BacTech and Medusa Mining Limited previously entered into a joint venture memorandum of understanding to focus on the identification of refractory gold-copper deposits in the Philippines that are amenable to BacTech's bioleaching process. The Dizon project is the first project to be evaluated by the joint venture. A sample drilling program on the upper 50 m of the Dizon tails was completed whereby 578 m of Denison tube coring was undertaken over 12 holes to recover 800 kg of tailings material. These samples have been forwarded to Perth, Australia, to undergo metallurgical testwork including bioleaching work on the sulphides. The composite grades from the 24 drill hole samples show good consistency in grade and have returned average values of 0.3 g/t Au 0.6 g/t silver and 0.074 % copper, which are similar to previous estimates based on historic mill operating data. In addition, the tailings also contain approximately 4 per cent magnetite. Gravity concentrates from five of the core composite samples have returned head grade estimates of 2.7 to 11.6 g/t gold due to the presence of free gold. A conceptual model for metal recovery consisting of a mineral sands mining and gravity processing operation to recover free gold, magnetite and sulphides is being considered by the joint venture. Testwork is now planned to obtain further details on processing alternatives for the gold and magnetite, as well as processing the sulphides to recover additional metal. Results of the first stage test results are expected in the first quarter of 2005.

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