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U 890ppm Calcrete Langer Heinrich NA

Category: URANIUM 
Product Code: AMIS 0090

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DOWNLOAD AMIS CERTIFICATE (PDF)
AMIS0090 Uranium, calcrete, Langer Heinrich, 920ppm, Namibia

Origin of material: This material was supplied by Paladin Energy from their Langer Heinrich Mine, 80km east of Swakopmund in Namibia. This deposit is a “calcrete deposit”; one of the surficial uranium occurrences discovered in Southern Africa during the 1970’s.

 
 

Uranium mineralization is associated with calcretization of valley-fill fluvial sediments in an extensive tertiary palaeo-channel drainage system. These sediments, also known as the Langer Heinrich Formation, comprise mainly grits and conglomerates. Detrital components include quartz- and feldspar granules, minor mica flakes as well as rock fragments derived from surrounding Proterozoic country rock.

 
 

Uranium mineralization occurs in the form of carnotite, which is a secondary uranium and vanadium mineral and has been precipitated from groundwater. Uranium as well as vanadium originates from the Proterozoic country rock, the former was most likely sourced from granites, whereas the latter was probably sourced from mafic schists.

 

Recommended Concentration and two “Between Laboratory” Standard Deviations


Certified Concentrations

 

U M/ICP

890

±

59

ppm

U XRF

903

±

42

ppm

Ba M/ICP

298

±

22

ppm

Sr M/ICP

199

±

20

ppm

V M/ICP

229

±

16.5

ppm

Zn M/ICP

49

±

5.1

ppm

Specific Gravity

2.67

±

0.18

no units

 

Provisional Concentrations

 

Co M/ICP

6.9

±

1.2

ppm

Cr M/ICP

115

±

29

ppm

Cu M/ICP

21.6

±

5.0

ppm

Mn M/ICP

358

±

59

ppm

Ni M/ICP

70

±

9

ppm

P M/ICP

416

±

66

ppm

Zr M/ICP

46.7

±

13.6

ppm

   
Additional information is available on the certificate

 

 

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VCS is a Reserve Bank Registered System Operator and a Member of Association of System Operators.