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Grasvally operations update

31 Mar 2015 07:10

RNS Number : 9501I
Sylvania Platinum Limited
31 March 2015
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Sylvania Platinum Limited

("Sylvania" or "the Company")

Β AIM (SLP)

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Initial Mineral Resource estimate and operations update at the Grasvally Chrome Project

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31 March 2015

Sylvania Platinum Limited, the low cost Platinum Group Metal ("PGM") processor and developer, is pleased to announce an initial mineral resource estimate ("Mineral Resource Estimate") following work done on the southern section at its Grasvally chrome project ("Grasvally Chrome Project"). The Mineral Resource Estimate is reported in accordance with the South African Code for the reporting of Exploration Results, Mineral Resources and Mineral Reserves ("SAMREC Code").

Highlights

Β· Initial Mineral Resource of 64,900 tons of high grade chromitite with an in-situ grade of 40.70% Cr2O3 and a chrome to iron ratio of 2.19:1, all of which is accessible by small and shallow open pits.

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Β· Total initial Mineral Resource of 144,516 tons of chromite mineralisation with an in-situ grade of 29.19% Cr2O3 and a chrome to iron ratio of 1.74:1.

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Β· Scope to increase the Mineral Resource in the coming months as exploration of the northern section and deeper portions of the lease area is concluded.

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Β· Bulk sample to be recovered pursuant to the terms of the section 20 permission granted by the Department of Mineral Resources, of which up to 15,000 tons of chrome may be recovered.

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Β· Handpicked lumpy chrome ore recovered and as sampled by ALS Inspection South Africa confirms Cr2O3 average grade of 43.08% with a chrome to iron ratio of 2.52:1 recovered from the Upper Massive Layer.

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Commenting on the resource estimate and update, Sylvania CEO Terry McConnachie said:

"Sylvania is pleased with the initial results observed from the exposure of trenching on strike on the southern portion of the resource. This exploration has been achieved with minimal exploration costs and it indicates that this is some of the highest grade chrome ore being recovered in South African chrome mines.

The exploration has to date concentrated on proving the feasibility for recovering the ore via open cast methods, however there is also potential for a substantial amount of this high grade ore to be mined underground.

Regular announcements on this valuable Grasvally chrome deposit will be made public as soon as relevant future results become available."

Summary

The Grasvally Chrome Project is held by a subsidiary of the Company, Grasvally Chrome Mine (Pty) Ltd ("GCM"). The Company holds 74% of the issued shares in GCM, while the remaining 26% is held by empowerment partners. The project is situated adjacent to Sylvania's existing Volspruit PGM project in the Limpopo Province.

The defunct Grasvally chrome ore mine, which is located in the Lower Zone of the Bushveld Igneous Complex, operated between 1966 and 1988 and enjoyed some of the highest chrome grades recorded in South African chrome mines.

Following exploration of the southern side of the lease area, Sylvania is pleased with an initial Mineral Resource of 64,900 tons of high grade chromitite with an in-situ grade of 40.70% Cr2O3 and a chrome to iron ratio of 2.19:1, all of which is accessible by small and shallow open pits. It should be noted that this initial Mineral Resource is likely to increase as the exploration of the northern section and deeper portions of the lease area is concluded over the next few months.

The total cost of the project to date is R35.9 million, comprising R22 million to purchase the chrome and platinum prospecting rights, as well as R5 million in securing the chrome dumps. A further R8.9 million has been spent to December 2014 on trenching and rehabilitation, with a further R2.7 million planned for exploration of the Northern section of the surface outcrop of the ore body over the next six months.

Technical detail

The chromitite mineralisation occurs within two tabular deposits, the Upper Chromitite and Lower Chromitite Layers, which have a stratigraphic separation of between 50 meters and 60 meters. The mineralisation is hosted in serpentinised dunites and harzburgites of the Lower Zone of the Bushveld Complex.

The Mineral Resource Estimate currently covers a strike length of 2,310 meters located in the southern section of the lease area. Exploration is currently underway in the northern section and results will be published in due course.

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Image 1: Mineral Resource plan of chromite-bearing seams

Please click on, or paste the following link into your web browser, to view the image in this announcement.

www.sylvaniaplatinum.com

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The Upper Chromitite Layer, from top to bottom, comprises an upper "four inch" marker of massive chromitite (about 9cm thick), a layer of disseminated mineralisation (about 40cm thick), the main massive chromitite layer (about 37cm thick) and a lower disseminated mineralisation (about 27cm thick).

The Lower Chromitite Layer comprises a main massive chromitite layer (about 61cm thick) underlain by a disseminated layer (about 22cm thick).

The grades of the disseminated layers vary and are described in the tables below, however current recovery test results have indicated that economic recovery of chrome from these disseminated layers is possible.

Accordingly, the Mineral Resource Estimates for the Upper Chromitite Layer have been reported based on a "three seam model" to a cut-off grade of nil% Cr2O3:

Β· Seam 1 comprises the upper "four inch" marker and upper disseminated seam ("UD");

Β· Seam 2 comprises the massive seam ("UML"); and

Β· Seam 3 comprises the lower disseminated seam ("ULD").

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The Mineral Resource Estimates for the Lower Chromitite Layer has been reported based on a "two seam model" to a cut-off grade of nil% Cr2O3:

Β· Seam 1 comprises the massive seam ("LML"); and

Β· Seam 2 comprises the underlying disseminated seam ("LLD").

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The Mineral Resource Estimate for the modelled mineralized zones at the Grasvally Chrome Project is classed as "Indicated" and "Inferred". This is based primarily on the confidence in, and continuity of, the results of a trenching programme supported by a limited percussion drilling programme.

The layers have been previously mined at depth by the now defunct Grasvally Chrome Mine. In areas where no mining has taken place, the depth was taken to the 25 meter highwall of the proposed pits.

The results of the Mineral Resource Estimate are provided in Table 1 and 2 below:

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Table 1: Mineral Resource estimate for the chromite-bearing seams*.

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Category

Layer

Lithology

Tonnes

Crβ‚‚0₃%

Feβ‚‚0₃%

Cr:Fe

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Β 

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Indicated

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UPPER LAYER

4" Marker & Upper Disseminated

5819

19.32

13.67

1.37

Upper Massive Layer

5858

45.45

18.12

2.46

Upper-Lower Disseminated

3332

23.85

13.19

1.67

Total / Weighted Average

15009

28.73

15.16

1.79

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LOWER LAYER

Lower-Massive Layer

0

Β 

Β 

Β 

Lower-Lower Disseminated

0

Β 

Β 

Β 

Total / Weighted Average

0

N/A

N/A

N/A

Β 

Β 

Β 

Β 

Β 

Β 

Β 

Β 

Β 

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Inferred 2*

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UPPER LAYER

4" Marker & Upper Disseminated

33792

18.72

13.89

1.32

Upper Massive Layer

32397

41.36

18.93

2.16

Upper-Lower Disseminated

23185

23.08

15.33

1.50

Total / Weighted Average

89374

26.71

15.84

1.63

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LOWER LAYER

Lower-Massive Layer

21803

37.74

17.46

2.11

Lower-Lower Disseminated

5200

8.67

12.08

0.66

Total / Weighted Average

27003

30.03

16.00

1.73

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Β 

Β 

Β 

Β 

Β 

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Inferred 1**

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UPPER LAYER

4" Marker & Upper Disseminated

5051

19.60

13.35

1.42

Upper Massive Layer

4842

43.80

17.25

2.48

Upper-Lower Disseminated

3237

22.65

12.95

1.71

Total / Weighted Average

13130

27.44

14.36

1.81

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LOWER LAYER

Lower-Massive Layer

0

Β 

Β 

Β 

Lower-Lower Disseminated

0

Β 

Β 

Β 

Total / Weighted Average

0

N/A

N/A

N/A

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Β 

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Β 

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*Applying a cut-off grade of nil% Cr2O3

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Table 2: Mineral Resource estimate by grade category*.

Β Β 

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Tonnes

WtAverage Crβ‚‚0₃%

WtAverage Feβ‚‚0₃%

WtAverage Cr:Fe

TOTAL RESOURCE EXPLORED (Composite package of the UCL and the LCL

144516

29.19

15.96

1.74

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HIGH GRADE RESOURCE

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Composite: Upper Massive Layer and the Lower Massive Layer

INDICATED

5858

45.45

18.12

2.46

INFERRED 2*

542000

39.90

18.34

2.14

INFERRED 1**

4842

43.80

17.25

2.48

Total / Weighted Average

64900

40.70

18.24

2.19

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LOW GRADE RESOURCE

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Composite: 4" Marker & Upper Disseminated Upper-Lower Disseminated and the Lower-Lower Disseminated

INDICATED

9151

20.97

13.76

1.48

INFERRED 2*

62177

19.51

14.28

1.33

INFERRED 1**

8288

20.79

13.19

1.53

Total / Weighted Average

79616

19.81

14.10

1.37

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*Applying a cut-off grade of nil% Cr2O3

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Notes for Table 1 & 2:

*Inferred 2: The seam has been adequately exposed along strike in trenches and has been sampled at surface, but the grade and density has not been adequately verified at depth.

**Inferred 1: Limited exposure and sampling of seams at surface.

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Competent Person

Peter Harrison has reviewed and approved the technical information that relates to Exploration Results or Mineral Resources contained within this announcement in his capacity as a qualified person, as required under the AIM rules. Mr Harrison is a Geological Consultant working on behalf of the Company, is a member of The South African Council for Natural Scientific Professions (Reg. No 400046/00) and has sufficient experience of the style of mineralization and type of deposit under consideration to qualify as a competent person. Mr Harrison was assisted by Mr Robert Steen, the Company's geologist.

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CORPORATE INFORMATION

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Registered office: Sylvania Platinum Limited

Clarendon House

2 Church Street

Hamilton HM 11

Bermuda

Postal address: PO Box 976

Florida Hills, 1716

South Africa

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Sylvania Website: www.sylvaniaplatinum.com

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CONTACT DETAILS

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For further information, please contact:

Terence McConnachie (Chief Executive Officer)

+44 777 533 7175

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Nominated Advisor and Joint Broker

Liberum Capital Limited

Richard Crawley/Tom Fyson

+44 (0) 20 3100 2000

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Joint Broker

GMP Securities Europe LLP

Richard Greenfield/ Alexandra Carse

+44 (0) 20 7647 2800

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Communications

Newgate

Tim Thompson / Adam Lloyd / Ed Treadwell / Helena Bogle

+44 (0) 20 7653 9850

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This information is provided by RNS
The company news service from the London Stock Exchange
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END
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MSCLIFIEVTILVIE
Date   Source Headline
27th Apr 20157:00 amRNSThird Quarter Report to 31 March 2015
31st Mar 20152:15 pmRNSExercise of share options
31st Mar 20157:10 amRNSGrasvally operations update
31st Mar 20157:00 amRNSGMP Securities Europe LLP appointed as Broker
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9th Mar 20157:00 amRNSGrant of PGM Mining Rights
9th Mar 20157:00 amRNSGrant of Iron Ore Mining Rights
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30th Jan 20157:00 amRNSSecond Quarter Report to 31 December 2014
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23rd Dec 20143:15 pmRNSResult of AGM
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3rd Dec 20137:00 amRNSAcquisition of Prospecting Rights
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5th Sep 20137:00 amRNSShare Buyback
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30th Apr 20137:00 amRNS31 March 2013 Quarterly Report
2nd Apr 20133:00 pmRNSHolding(s) in Company
28th Mar 20137:02 amRNSShare Buy Back
27th Mar 20137:00 amRNSHalf Yearly Report
12th Mar 20137:00 amRNSOperations Update

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