Orocobre Limited (ORE:ASX, ORL:TSX) has provided further drilling results announced by Advantage Lithium Corp. (“Advantage Lithium”, TSXV:AAL, OTCQX: AVLIF, 35% owned by Orocobre) with initial sampling from CAU07 and CAU16 holes averaging 635 mg/l and 619mg/l lithium respectively.
CAU07 Drilling Results
The initial lithium concentration at a depth of 236 m averaged 635 mg/l Li and 4,772 mg/l K, with a Mg/Li ratio of 2:1 from three samples (a primary sample, a check sample and a field duplicate taken at this depth using a bailer). Systematic brine sampling is planned and results will be announced when available. Diamond drilling continued to a depth of 275 m, providing core samples for porosity test work, an important component of the upcoming resource estimation. CAU07 will now be deepened using a rotary drill, with the objective of reaching the underlying bedrock and conducting systematic brine sampling throughout the well, in addition to pumping tests for assessment of the brine flow.
CAU16 Drilling Results
Initial results have been received from samples between 169 and 199 m depth, averaging 619 mg/l Lithium and 4,878 mg/l Potassium, with individual sample results ranging from 564 to 648 mg/l Lithium and 4,460 to 5,069 mg/l Potassium. The average Mg/Li ratio is also low at 2.3:1, similar to that in CAU07 as well as the Orocobre Olaroz project and SQM/Lithium Americas Cauchari project. Additional sample results are awaited from batches of samples above and below this interval of the hole. Diamond drilling has now reached a final depth of 320 m and systematic sampling of the hole will now be completed using a packer or bailer sampling device. Once sampling is complete the hole will be installed as a monitoring well.
Drilling intersected a significant sequence of sandy material from surface, with gravels encountered deeper in the hole, showing many similarities to CAU07. These results confirm the presence of attractive concentrations of lithium brine in the NW Sector Cauchari JV properties, opening up the resource potential of this area.
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