EMA Gold Project
The EMA Gold Project is located 30 km south of Apui, Brazil with year-round access by gravel roads. The area is located over the mapped Colider group, a Proterozoic volcanic sequence known for gold and base metal deposits.
Geology and Mineralisation
Initial soil sampling at Ema revealed the presence of an extensive gold-in-soil geochemical anomaly associated with a magnetic low within a high magnetic trend (see Fig. 1 below). Geological mapping has revealed that the magnetic features are related to mafic intrusives (gabbro and dolerite) emplaced along a regional structural trend. The low magnetic zones within the mafic bodies may be the result of magnetite destruction by hydrothermal fluids.
Field reconnaissance has revealed the presence of extensive small-scale artisanal workings mainly within felsic volcanics and intrusives (rhyolite and quartz-porphyry) adjacent to the mafic bodies. An initial drilling programme focused on areas of artisanal workings failed to detect gold mineralisation amenable to conventional assay techniques but pyrometallurgical tests on 5kg bulk samples revelaled the presence of high levels of precious metals across the entire area drilled (see map and results in Ema Test Results). In addition, extensive metallurgical testing of bulk samples of outcropping mafics collected over a broad area consistently reported high precious metal recoveries (see Ema Test Results).
In depth investigations conducted in conjunction with BBX´s international consultants show that the precious metals occur in a complex interlocking form comprised of minute particles which must be unlocked prior to analysis or recovery. BBX is currently finalising the development of proprietary techniques to assay and recover high levels of precious metals from this style of mineralisation.
Trial Mining Licence
BBX has been formally granted a trial mining license for Ema, announced in the Amazonas State Government Gazette on June 7, 2019. The trial mining license allows BBX to mine 50,000 tonnes of mineralised rock per annum.