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Orocobre Ltd.

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Summary

Project:

Cauchari

Deposit:Cauchari
Location:Argentina
Commodities:Lithium-Potash
Date:2/7/2018
Report Code:JORC
Report Type:Exploration/Drilling Update
Project Stage:Pursuing Resource Increase/Upgrade
Report details:7-2-2018: Orocobre Ltd. announces an Exploration/Drilling Update report for its Cauchari deposit at the Cauchari project. JV - Brine drill results incl. 360m @ 662mg/l avg Li, 6,137mg/l avg K from 40m. Orocobre Limited (ASX: ORE, TSX: ORL ) (“Orocobre” or
Resources:(not mentioned in this report)
CP/QP:[Overall Report]: Murray Brooker (Hydrominex Geoscience Pty Ltd.)
ABSTRACT:Orocobre Limited (ASX: ORE, TSX: ORL ) (“Orocobre” or “the Company”) is pleased to provide an update on the brine sampling of diamond drill hole CAU11 in the Cauchari JV property located in Jujuy Province, Argentina. The exploration program is being managed by JV partner Advantage Lithium Corp. ("Advantage Lithium") (TSX Venture: AAL) (OTCQX: AVLIF) who hold 50% of Cauchari, earning up to 75%. Orocobre owns 33% of Advantage Lithium’s issued capital. CAU11 is located in the SE Sector of the property; 5.6 km southeast of CAU09 (refer to map). This drill hole intersected sediments comprising halite, clay and some sand to 405 m depth. An important interval of sand dominated material was encountered from 405 m to 480 m depth and corresponds to a deeper sand unit which the company was exploring for. Further exploration will be undertaken to evaluate the extent and thickness of this sand dominated unit. The initial constant rate pumping test conducted on hole CAU11 sustained a flow rate of 19 l/s over a period of 48 hours (Figure 1), which is promising for future brine production. This flow rate was at the upper limit of the pump capacity used for the test. A total of 18 brine samples were taken during the pumping test, with the average concentration of 515 mg/l Lithium and 4,577 mg/l Potassium and a Mg/Li ratio of 2.6:1.

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