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  TENEMENTS Jervois Mining Jervois Mining
Our current list of tenements are:
   Forest Reefs(NSW)
   Nyngan(NSW)
   Summervale
   Uranium Exploration
   Young(NSW)

Note: There may be more up to date information regarding tenements
in our Report & News section.

Summervale
New Nickel/Cobalt Laterite Discovery, 'Summervale' Nyngan,NSW.

Tenement - 'Summervale' EL 7281

The Company is pleased to announce some remarkable early drilling results targeting what was a suspected and possibly large extension of the known nickel/cobalt resource of 16 million tonnes @ 0.83% nickel and 0.06% cobalt identified many years ago by then Anaconda Ltd (now Minara Resources Ltd) at Summervale, near Nyngan, N.S.W. In the new zone identified by ground and airborne magnetics every hole intersected strong mineralisation particularly for nickel. The intercepted intervals are considered likely to potentially double in thickness when final assays are received. This is shown in the attached table. The Company regards these results as exciting; the new tenement encompasses a very large structure.


Geological Setting

Exploration Licence 7281 'Summervale' is located approximately 25 km north west of Nyngan, NSW, straddling the Mitchell Highway. 

The EL covers the north east limb of a north-south trending arcuate belt of serpentinised ultramafics known as the West Lynn Serpentinite; within the Girilambone-Wagga Anticlinorial Zone.   The linear orientation of the belt suggests emplacement along regional deformation or faults of Alpine-type origin (ophiolite).

The West Lynn Serpentinite is derived from the alteration of a medium grained dunite intruded into the metamorphosed Ordovician Girilambone Group.  It is comprised of phyllites, quartz-mica and chlorite schists, quartzite, laminated siltstone (all with pervasive quartz veins) and  conglomerates of Cambrian-Ordovician age; with numerous late Silurian to early Devonian intrusives of ultramafic to intermediate composition.   The EL is almost completely covered by alluvium.


Recent Exploration Program

The program followed a concept identified by our Exploration Manager, Dr Sanja Van Huet and her technical assistant, Ms Jane Quinn.  They also supervised the drilling on the ground.  One veteran local geologist, when advised of this discovery said "this thing lay for eons of time undiscovered just waiting (for Jervois) to come!"  Despite quite intensive past airborne geophysics, magnetics etc, no one else previously drilled a test hole. [The writer's comment; our exploration team kept it simple, knew what they were looking for and were not diverted by any search for a "Tritton"* look alike!]

*a copper/gold mine some 170 kilometres from Nyngan

 This discovery is considered very important for Jervois and its shareholders and because of the relatively high grade, also especially important for NSW.  Shareholders should realise that whilst the current nickel laterite locations of Young and Nyngan are both near perfect from an infrastructure perspective, the grade dictates that Westlynn and Summervale, near Nyngan, will potentially become the major nickel asset of the Company.


Exploratory drilling program: initial assays.

Hole Number

Northing GDA

Easting GDA

From(m)

To(m)

Interval width(m)

Ni %

Co %

SV1

6523588

501394

43

47

5

0.710

0.027

49

66

17*

0.328

0.014

SV2

6523584

501513

42

69

27*

0.3173

0.015

SV4

6523584

501313

43

49

6

0.914

0.046

49

68

19*

0.3290

0.014

SV5

6523584

501213

38

41

3

0.686

0.032

43

46

3

0.4984

0.017

SV6

6523784

501426

31

41

10

0.922

0.034

including

32

37

5

1.145

0.038

41

60

19*

0.2643

0.013

*These thick mineralization, although lower grade, are reported because of the possibility of up-grading by physical means (e.g. screening). At this early stage we have no knowledge of the mineralogy of this unit.

Mr Derek Foster, our Director for WA and geologist, assisted with the drill logging.  He considers, based on certain structural and textural features that he observed in the sample, that Jervois should also be testing the margins of this ultra-mafic zone for nickel sulphides.   Dr Ken Collerson, our other geologist on the Board, reached the same conclusion. In particular, he commented on the apparent tectonic similarity between these ultramafic bodies at Summervale and those that host the high-grade nickel sulphide Avebury deposit in Tasmania.  However testing of these models will require additional geophysical analysis and any potential drilling for possible nickel sulphide targets would have to follow at a later date, due to the expense of diamond drilling.


Westlynn (EL6009), NSW (2008) - Significant Intersections

Hole Number

Northing GDA

Easting GDA

From(m)

To(m)

Interval width (m)

Ni %

Co%

Na 126

6513807.1

504501.1

45

56

11

0.74

0.052

including

49

52

3

0.91

0.0820

Na 127

6513805.1

504798.6

36

50

14

1.17

0.0705

including

37

45

8

1.39

0.1100

including

38

42

4

1.55

0.1520


Comparison With Other Known Nickel/Cobalt Laterites In Australia

Drawn From The Register of Australian Mining for 2007-2008

DepositLocationTonnes (million)

Grade (%Ni/Co)

Minara Resources

WA

21.4

1.05/0.07

Heron

WA

903

0.74/0.05

Ravensthorpe

WA

238

0.68 (Co not quoted)

Young

NSW

167

0.72/0.07

Westlynn/Summervale*(Nyngan)

NSW

16.0+ (indicated)

0.83/0.064

 Of the above, only Minara Resources, a high pressure acid leach operation, remains in production. Ravensthorpe, the latest high pressure acid leach operation, closed down after only a short period of operation. It is clear to all observers that a new, lower cost treatment process is required for nickel laterites.

*Recent drilling at Westlynn and Summervale is yielding drill assay intercepts at 1% nickel or better accompanied by cobalt levels from 0.03% to 0.15%.  More drilling is required to establish final resource tonnes.

 Exploration Drilling September 2009

As a follow up to the previous drill programs,  ground magnetic surveys have been carried out to assist with further exploration drilling at 'Summervale'. Results are in table below.

Hole NumberNorthing GDAEasting GDAFrom (m)To (m)Interval Width (m)Ni%Co%
SV156524364502331283130.960.255
SV3965244665023332738111.020.035
including293561.250.034
SV4465229855013484154131.410.083
including414212.150.033
and434412.030.264
and424531.890.210

The latest drilling results, in combination with those reported on 25 June; appear to have identified a block of continuous mineralisation estimated to be 200 meters wide and 800 meters long. This exploration target doesn't follow the expected magnetic signature and as such was difficult to locate. To reach proper JORC resource status, further exploratory drilling is required


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