Modern Mining April 2017

MINING News

Maiden JORC classified resource for Mothae

million carats of diamonds at an average modelled revenue of US$1 063 per carat (to 300 m below surface, at a 2 mm bot- tom screen). In its report, MSA also highlighted the potential upside to its diamond revenue model, stating: “There is upside potential for the average diamond value based on the model value of large stones.”

Lucapa Diamond Company, listed on the ASX, has announced a maiden JORC clas- sified diamond resource estimate for the advanced Mothae kimberlite diamond project in Lesotho. As was announced in late January this year, Lucapa has been awarded a 70 % interest in Mothae Diamonds (Pty) Ltd (MDL), following a competitive tender process run by the Government of Lesotho, which retains a 30 % interest. MDL holds the recently awarded 10-year mining licence and other assets related to Mothae. As part of the acquisition, Lucapa engaged independent consultants The MSA Group of Johannesburg to update and convert the existing Canadian- standard NI 43-101 resource estimate, dated 28 February 2013, into a classified JORC 2012 estimate. The total indicated and inferred Mothae diamond resource has been estimated by MSA to be 38,96 Mt at a diamond grade of 2,7 carats per 100 tonnes, containing 1,04

While the JORC classified indicated and inferred diamond resource of 38,96 Mt is calculated to a depth of 300 m, MSA has modelled the Mothae kimberlite to a total depth of 500 mbelow surface, correspond- ing to a total estimated 77,4 Mt. Mothae is located within 5 km of Letšeng, the world’s highest US dollar per carat kimberlite diamond mine. 

Eastport awarded prospecting licences Eastport Ventures Botswana (Pty) Ltd (EVB) has recently been awarded two prospect- ing licences for precious stones in Botswana. Both licences are to the immediate north of the very rich Jwaneng diamond mine.

some of the drawbacks of other traditional IP survey methods. Eastport will externallymap and internally define the features of the diamond-bearing Kgare kimberlite as a first step in develop- ing a geophysical signature for exploration purposes. Eastport’s exploration team will use the data collected to refine the regional geology in 3D to help overcome the difficulties of kimberlite exploration in terrain where neu- tralised magnetic signatures may occur. 

Exploration is currently underway and shortly EVB will mobilise a 3D IP chargeabil- ity/resistivity ‘Full Waver’ system developed by IRIS Instruments. According to EVB, the Full Waver system offers a unique opportunity to map and explore the subsurface while overcoming

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Maelgwyn Mineral Services Africa (Pty) Ltd Tel +27 (0)11 474 0705 Fax +27 (0)11 474 5580 Email MMSA@maelgwynafrica.com www.maelgwynafrica.com