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U 528ppm Calcrete Langer Heinrich NA

Category: URANIUM 
Product Code: AMIS 0114

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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.
Mineral and chemical composition: 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 (XRF) 550 +- 29 ppm
Ba (M/ICP) 290 +- 30 ppm
Sr (M/ICP) 206 +- 16 ppm
Specific Gravity 2.66 +- 0.22 g/cc

  Provisional Concentrations  

U (M/ICP) 528 +- 90 ppm
Cu (M/ICP) 15.0 +- 3.4 ppm
Mn (M/ICP) 267 +- 40 ppm
P (M/ICP) 432 +- 82 ppm
S 0.047 +- 0.006 %
V (M/ICP) 157 +- 20 ppm
Zn (M/ICP) 58 +- 12 ppm

  Indicated Means  

Co (M/ICP) 6.2 ppm    
Cr (M/ICP) 104 ppm    
Ni (M/ICP) 14.4 ppm    
Zr (M/ICP) 41 ppm    
 
 

  

 

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