Tanzanian Gold Corporation has started a geophysical survey at the Buckreef Gold Project in Tanzania. This survey will help the company complete a new resource-geology model.
Exploration Geophysics Pty Ltd has arrived on-site and has started down-the-hole wireline geophysical surveys of holes drilled earlier this year.
This will be done using a probe with induced polarization and electromagnetic sensors that feed a continuous stream of data on resistivity and chargeability of the host rocks to a truck on the surface.
This data will then be analysed and will assist identification and/or correlation of different rock units and shear structures between the various drill holes and thus also provide potential targets for follow-up infill drilling.
The initial phase of the geophysical survey is based on 10 holes with a survey length of about 3,620 metres. The company expects that additional holes will be surveyed in phase two.
The actual number of surveyed holes will also depend on accessibility as some might have collapsed after the drill rods were pulled out.
The data from the geophysical survey will assist the company in completing its resource-geology model. This model will be a state-of-the-art interpretation of the principal geological elements that carry gold mineralisation and the key structures that are important in the distribution of gold along an estimated strike length of 1,200 metres of the Buckreef mineral occurrence.
The model will extend from surface to depths that are in some locations several hundred metres below the pit bottom of the current open pit as reported in the pre-feasibility report by Virimai Projects and published in June 2018.
The geological and structural information arising from the geophysical surveys will also be used to facilitate the definition of hard wireframes that are necessary in order to do resource estimations.
Drilling of phase II diamond drill holes is continuing on the property.
Upon completion of this drilling, the company will be making a decision on whether or not to scope out a phase III drilling program. The objectives of phase III would most likely be to drill high priority targets that may be generated by the geophysical survey and to initiate drilling into the Ultra Deep.
Drilling in phase II has been aimed at identifying the continuation of in-pit mineralisation 150 to 200 metres below the bottom of the open pit. Phase III would test the possibilities that gold mineralisation continues to much deeper levels below the bottom of the open pit.