Mineral Resources (ASX: MIN) has provided a mineral resource and ore reserve update for its Wodgina lithium deposit, following the receipt of results of re-sampling, infill drilling and blast hole sampling data. The update highlights a 25.3 million tonne (or 12%) increase in the hard rock mineral resource, with that resource now estimated at 259Mt at 1.17% Li20. The further infill drilling between May and October 2018 has also been used to increase confidence in significant parts of the Inferred material.
Mineral Resources Limited (ASX:MIN) (“MRL”), is pleased to announce the results of re-sampling, infill drilling and blast hole sampling data as at 18 October 2018 to produce new Mineral Resource and Ore Reserve Estimates for the Wodgina Lithium Deposit.
Widenbar and Associates Pty Ltd (“Widenbar”) has used additional infill drilling as at 18 October 2018 to produce a new Mineral Resource Estimate for the Wodgina Lithium Deposit.
The further infill drilling between May and October 2018 has also been used by Widenbar to increase confidence in significant parts of the Inferred material. The total Indicated and Inferred Pegmatite Mineral Resource at Wodgina is now 236.9 Mt at 1.19% Li2O (depleted to the end of September 2018).
The Wodgina Total Mineral Resource, using a 0.5% Li2O cut off for pegmatite and including the Tailings material, now stands at 259.2 Mt at 1.17% Li2O.
The original Wodgina Tantalum and Tin Deposit in the area of interest for lithium mineralisation had 1,691 drill holes, of which 1,510 were geologically logged in detail and were able to be used for interpretation of pegmatite bodies.
Existing reverse circulation sample pulps from these previous drilling programs at Wodgina were retrieved from storage in 2016 and submitted to Nagrom Laboratories for assaying for Li2O. A total of 3,390 assays were received. In addition, geological logging data from 295 RC drill holes (including 10 with diamond tails) for a total of 76,849m has been received and used in a revised interpretation at the date of this Mineral Resource Estimate.
This represented an increase of 29 holes and 11,650 m compared to the previous May 2018 estimate. There were also 82,886 blast hole samples incorporated into the database.
The additional holes which were available for the October 2018 resource update were used to both confirm existing interpolated blocks and extend the Inferred and Indicated components of the resource into new areas.