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Glenover Rare Earth Project

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Glenover Rare Earth Project (Limpopo Province, RSA)

  • More information is available in the Glenover Geological and Resource Report (PDF, 24.4Mb)

  • The Glenover Project is located approximately 88 kilometers (km) north of Thabazimbi in the Limpopo Province of South Africa.

  • The prospecting right covers a surface area of 15,802 hectares (ha). The majority of the mineral assets are located on the farm Glenover 371 LQ. This includes a large open pit mine as well as various stockpiles of high, medium and low grade phosphate bearing material.

  • Historical exploitation of the Glenover deposit for its phosphate content resulted in the creation of a series of stockpiles which still contain high levels of phosphate and contain varying amounts of REE’s, the presence of which have been confirmed by sampling programs undertaken by Gold Fields of South Africa Limited (GFSA) and by Fer-Min-Ore (Pty) Ltd (FMO) (Harrison, 2004). The previous owners referred to the stockpiles as “dumps”. Snowden has revised the naming convention as a consequence of them being chemically unaltered and some of them demonstrating economic potential, and refers to the dumps as stockpiles. The stockpiles are located on Portion 1 of Glenover 371 LQ.

Geological Setting
The Glenover carbonatite is a complex circular, carbonatite/pyroxenite plug intruded into sedimentary shale and arenite rocks of the Waterberg Group and prominently visible as a major circular feature on satellite images of the area. Thickness estimates for the Waterberg Group range from 2,700 meters (m) to more than 7,000 m.

The deposit comprises a central iron rich breccia (subsequently mined out), surrounded by a pyroxenite plug, into which carbonatite has intruded as a series of dykes and cone sheets.

The main historical source of geological information concerning the Glenover Carbonatite is Handbook 6 of the Geological Survey of South Africa, ‘The Carbonatites of South Africa and South West Africa’, published in 1967 and authored by WJ Verwoerd.

Verwoerd hypothesised that the deposit was created by two geological events that resulted in the formation of a primary and a secondary phosphate deposit. Exploitation has historically focused on the phosphate content of the deposit and the potential of the surrounding rocks. However limited exploration has been undertaken to determine the potential of other metals and minerals, inter alia REE’s (Begley, 1987).

Resource Estimations
GFSA mined the Glenover property between 1957 and 1984 for its phosphate content and limited information is available from mining records concerning the volume, tonnes and REE values deposited on the various stockpiles deposited around the Glenover open pit.

In 2011 the volumes of the Glenover stockpiles were independently surveyed by Global Surveys (Global). This was preceded by a bulk sampling program undertaken on three of the stockpiles. Four 750 kilogram (kg) samples were taken from each stockpile, excluding any material greater than 200 millimeter (mm) in size. No indication is given in the data provided by FMO as to what proportion of the sample comprised material of this size range. Each individual sample was crushed and pulverised and a 25 kg sub sample taken for assay from each of the samples using a spear sampling technique. For each stockpile, an additional sample, referred to as the homogenised sample was created by mixing 150 kg of sample from each of the primary samples.

Bulk density (SG) measurements for two of the stockpiles were undertaken by Harrison in 2004. Snowden has assumed that the lower SG values provided by Harrison (2004), in conjunction with the volumes provided by Orbital, may be used to estimate the total tonnes (t) of material contained within the sampled stockpiles.

Glenover Phosphate Project Independent Resource Statement

Note:
The Operator is Glenover.
Prepared by Geo-Consult International (Pty) Ltd.

 

GLENOVER RARE EARTH PROJECT LINKS:
> GLENOVER PROJECT AT A GLANCE
> GLENOVER GEOLOGICAL & RESOURCE REPORT (PDF, 24.4MB)
> GLENOVER PROJECT IMAGE GALLERY
> More information is available on www.glenover.com/

RELATED PROJECTS:
> CONCORDIA COPPER PROJECT (Northern Cape, RSA)

 
     
 

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