Chase Mining Corporation Ltd (ASX:CML) has altered the joint venture strategy at Lorraine project in Quebec, Canada, and will undertake the initial assessment and deep drilling of gold targets itself during the June quarter of 2020.
The drilling by the advanced nickel-copper-PGE focused explorer is designed to test the deep gold potential from the footwall of the deposit rather than attempt to drill through the old workings.
Provisional planning indicates the need for about 3,000 metres of diamond drilling.
Bonanza grade gold targets
This program will target the reported historical bonanza grade gold initially at around 250 to 350 metres depth within the Lorraine Mine as well as follow-up several surface gold anomalies and channel samples east of the Main Shaft location
The historical results to be targeted include:
- High-grade gold mineralisation associated with quartz-chalcopyrite veining along the footwall sheared basalt/felsic volcanic contact zone on the 6th level drift;
- 28 metres at 45 g/t gold, 41g/t silver and 3.19% copper channel sample on the 601W/601E drifts;
- 10 metres at 14 g/t, 22 g/t and 3.16% channel sample on the 601W drift; and
- 1 metre at 53 g/t and 12 g/t from a drill intersection in the 6th level shaft area.
Stope development at the mine was put on hold during 1966 with the Level 3 ore becoming poor in nickel and richer in copper.
Development work continued on the 5 and 6 Levels to provide drill access to the NNE plunging ore zone.
Gold mineralisation was reported on the 5 and 6 Level drift development during this time but only assay data from the 6 Level is available to the company.
Around 13,000 ounces of gold was recovered from nickel-copper ore shipped for processing in Sudbury and the gold grade averaged around 0.67 g/t but records do not indicate which batch or batches of ore the gold was recovered from.
The underground gold potential was not followed by previous owners and follow-up drilling in 2004 was not successful due to significant deviation of the deep diamond hole.
Located 20 kilometres east of Lorraine is the Belleterre Gold Mine which produced 2.18 million tonnes at 10.73 g/t for 734,000 ounces between 1936 and 1959.
Chase is well placed in terms of a gold database for the mine site as the data was an integral part of the assessment of the nickel potential of the Lorraine Mine site area by the company’s consultants Orix Geoscience.
A more detail interrogation of the database by the company in conjunction with Orix will begin shortly to facilitate drill hole targeting.