128 diamonds found in samples from three dykes in West Greenland

07-03-2004

A test has resulted in 128 diamonds from three kimberlitic occurrences in the ManiitsoqKangerlussuaq region of southern West Greenland.
The largest diamond measures 0.74 × 0.63 × 0.54 mm.

Composite rock samples of 10001060 kg from three occurrences have been processed and examined for diamonds by SGS Lakefield Research Ltd. The diamond identification results are summarised in the table below.

Diamond size fraction (µm)

Number of diamonds
Occurrence 1

Number of diamonds
Occurrence 2

Number of diamonds
Occurrence 3

-600/+425

5

0

0

-425/+300

9

0

0

-300/+212

14

1

0

-212/+150

38

0

1

-150/+100

59

1

0

Total

125

2

1

The Government of Greenlands Bureau of Minerals and Petroleum (BMP) and the Geological Survey of Denmark and Greenland (GEUS) conducted the sampling programme in 2003.

The results are released on 7 March 2004 in an open file report from the Geological Survey of Denmark and Greenland (GEUS).

The report is available from GEUS:
S. M. Jensen, K. Secher & T. M. Rasmussen 2004: Diamond content of three kimberlitic occurrences in southern West Greenland. Danmarks og Grønlands Geologiske Undersøgelse Rapport 2004/19, 41 pages.

Further information:
Senior Research Scientist Sven Monrad Jensen
Geological Survey of Denmark and Greenland (GEUS)
Phone (direct) +45 38 14 22 12
E-mail: smj@geus.dk