Analytical Sample Bundle Metadata


GSC/TSD-1999-Contwoyto Lake 76E North:Till ODM HMC grain separation, VG counts

Type: lab data

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Download analytical data for this bundle in one of three formats, depending on the desired convention for treating values below the lower detection limit:

Bundle Description

Till samples from Contwoyto Lake (NTS 76E North) were processed by Overburden Drilling Management, Ottawa for heavy mineral concentrates and gold grain picking.  25 samples were collected in 1996 and processed in 1997.  The < 1 mm fraction was processed for heavy mineral concentrates.  Gold grains were separated and classified according to shape.

Grain separation data are published in GSC Open File 3768 and gold grain data are published in GSC Open File 3654.

Sample Classification (Analytical)

IndexSample CountSurveySample TypePrep Lab MaterialControl RefUnknown SourceDuplicates count
25  Till sampling survey, Contwoyto Lake area, NTS 76E (N½), Nunavut, 1996. (more) Till HMC separation (ODM standard) No  No 

Analytical Package Description

Laboratory: Overburden Drilling Management, Ottawa, Ontario (ODM)

Name: ODM heavy mineral separation and VG counts (<1 mm fraction table processed; 1-2 mm fraction processed by methylene iodide) (more)

Overburden Drilling Management Heavy Mineral Separation process and visible gold grain counts. The < 1 mm fraction is table processed.  For some samples that contain abundant indicator minerals, the 1-2 mm fraction is processed for heavy minerals directly by heavy liquid separation.

Analytical Suites:

1  ODM Heavy Mineral Separation (<1 mm fraction)
2  ODM VG count
3  ODM – calculated gold concentrations

Analytical Methods:

IndexColumn NameSuite OrderMethod OrderSuite RepeatQuantityUnitsDetermination Limit
1  Wt_Processed    Wt  grams  
2  Wt_OvrSize    Wt  grams  
3  Wt_100_200    Wt  grams  
4  Wt_TblFeed    Wt  grams  
5  Wt_TblConc    Wt  grams  
6  Wt_MI_Lght    Wt  grams  
7  Wt_MI_Hvy    Wt  grams  
8  Wt_MI_NFM_Tot    Wt  grams  
9  Wt_MI_NFM_lt25    Wt  grams  
10  Wt_MI_NFM_25_50  10    Wt  grams  
11  Wt_MI_NFM_50_100  11    Wt  grams  
12  Wt_MI_FM  12    Wt  grams  
13  Wt_MI_100_200  13    Wt  grams  
14  VG_tot    VG Tot  count  
15  VG_reshaped    VG Reshaped  count  
16  VG_modif    VG Modified  count  
17  VG_pristin    VG Pristine  count  
18  VG_HMC_Wt    Wt  grams  
19  VG_tot_ppb    Au  ppb  
20  VG_reshaped_ppb    Au  ppb  
21  VG_modif_ppb    Au  ppb  
22  VG_pristin_ppb    Au  ppb  
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