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Vallabhbhai Shamjibhai Patel tells about the ongoing construction of the Surat Diamond Bourse

The under-construction Surat Diamond Bourse (SDB) is India's second diamond trading hub based at Surat, Gujarat, spread across 35.54 acres with more than 4,000 offices for national & international traders. On the onset, the project which...

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The strategy of regulating the Russian jewellery industry

At the General Meeting of the Russian Jewellers Guild Association held in April, two principally important documents were adopted: The Strategy of Regulating the Jewellery Industry of Russia and The Charter of a Good Faith Taxpayer. Besides, the issues...

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Tracking the provenance and lifecycle of a product is a natural and necessary evolution in our industry

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28 may 2018

Finnish Arctic Star - the first diamond results from the spring 2018 drilling on the Timantti Project are ecouraging

07 june 2018

Arctic Star Exploration Corp announced its first diamond results from the Spring drill program on its 100% owned Timantti Diamond Project near Kuusamo, Finland. The results are from 79.95kg of split HQ size drill core from the initial drill hole, WW-001 on the White Wolf kimberlite, one of the four known diamondiferous kimberlite bodies on the Project area.
The results are shown below in Table 1 which also gives the caustic fusion results previously received from White Wolf. The analyses are consistently reporting more than 100 stones per 100kg. The Company is also encouraged by these sets of results that have provided more than one 1.18mm stone for every 100kg of sample processed.
The Company expects to now receive a constant stream of results as the laboratories process the core from approximately 18 more kimberlite intercepts on the Project. To expedite this process, the Company is now using two laboratories in Canada, Microlithics in Thunder Bay and SRC in Saskatoon.

Table 1: Micro Diamond Assay Results, White Wolf Kimberlite

Kimberlite

Sample
Weight Kg

+0.106
mm

+0.15
mm

+0.212
mm

+0.3
mm

+0.425
mm

+.60
mm

+.85
mm

+1.18
mm

Total
Stones

White Wolf

current

79.95

53

24

17

4

6

0

0

1

105

White Wolf

previous

67.55

70

61

24

15

3

5

0

1

169

White Wolf

total

147.60

123

85

41

19

9

5

0

2

274

Notes: New results are from Microlithics Laboratories Inc., of Thunder Bay, ON (“Microlithics”) which is independent of the issuer and is not an ISO lab. Previous results also include those from SRC of Saskatoon. SRC is independent of the Issuer and is ISO accredited. A chain of custody protocol was used. Diamonds results reported using CIM guidelines.

Arctic Star completed first pass delineation drilling on the White Wolf kimberlite in March. Since then the drill holes have been logged, split and dispatched. Table 2 lists the drill holes completed at the White Wolf kimberlite in 2018 along with their kimberlite intercepts. The holes were drilled to obtain sample for caustic fusion and to further delineate the kimberlite. Each hole intercepted kimberlite after passing through the overburden, which is only a few meters deep at this locality. The holes were then completed when they passed out of the kimberlite into the surrounding country rock.

Table 2: Drill Intercepts from White Wolf Kimberlite 2018
 

Hole No.

Easting

(m) 

Northing

(m)

Bearing/Dip

(degrees)

Total 

Depth

From 

(m) 

To

(m)

Kimberlite 

(m)

Description

WW-001

4470858

7335700

55/45

56.5

4.2

47.75

43.55

Kimberlite

WW-001B

4470858

7335700

55/60

56.5

5.1

23.3

18.2

Kimberlite

WW-002

4470874

7335713

55/55

40.0

3.3

34.75

31.45

Kimberlite

WW-002B

4470715

7335710

135/60

26.4

4.4

21.65

17.21

Kimberlite

Notes: Co-ordinates use the KKJ system. Core diameter is 57mm. Intercepts are not true widths as the holes were collared in kimberlite. The Country Rock consisted of quartzites, and greenstones, with occasional quartzite xenoliths in the kimberlite up to 1m diameter.

The diamond results reported here are from the initial hole WW-001. Arctic now has samples from boulder float at the surface, from resampling historic drill core and from its own drilling and all confirm the kimberlite to be diamondiferous. A total of approximately 360kg of sample from the White Wolf kimberlite has now been sent for analysis from this season’s drilling, including the results reported here. Similar size samples have been taken from the other kimberlites in this cluster, the Black Wolf and Grey Wolf kimberlites. The Company’s goal at present is to accumulate enough diamond data so that predictions of grade using conventional graphical techniques can be made.
Once all the current micro-diamonds sample results are reported, the Company will make decisions on continuing the diamond evaluation process on these kimberlites. This work would include further delineation drilling of the individual kimberlites with caustic fusion analyses, the relationship of these bodies to one another in order to determine available tonnage, followed by three-dimensional bulk sampling to get more precise estimates of the grade and to determine the average value of the diamonds.
Importantly, the Company is also focused on finding more kimberlites in the area, with ongoing exploration including esker and till sampling and focused airborne and ground geophysical surveys, all designed to generate multiple drill targets.

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