Analytical Sample Bundle Metadata


GSC/TSD-1997- Contwoyto Lake 76E S Till Canamera HMC and grain separation Diamond Indicator Processing HMC and grain separation

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

27 till samples from Contwoyto Lake (NTS 76E South), were processed by Canamera Geological Services, North Vancouver, BC. Samples were screened into the 0.25 – 0.5 mm grain size fraction and separated magnetically with a Permaroll separator and for heavy mineral fractions with a Magstream separator. The 27 samples were then sent to Diamond Indicator Processing of Thunder Bay, Ontario where samples were separated for magnetite and mica. The < 0.25 mm fraction was sent to ODM processing for gold grain recovery. Samples were collected in 1994 and processed in 1995. (These are put together under one process/package as the information from each lab is combined in the appendix).

These data are published in GSC Open File 3386.

Sample Classification (Analytical)

IndexSample CountSurveySample TypePrep Lab MaterialControl RefUnknown SourceDuplicates count
27  Till sampling survey, Contwoyto Lake area, NTS 76E, Northwest Territories and Nunavut, 1994. (more) Till HMC separation (Canamera/DIP) No  No 

Analytical Package Description

Laboratory: Canamera Geological Ltd/Diamond Indicator Processing

Name: Canamera Geological Ltd. + Diamond Indicator Processing Sample processing and HMC separation (2 size fractions) (more)

Canamera Geological Ltd. Permaroll and Magstream separation of samples for paramagnetic/non-magnetic and light and heavy mineral fractions. Further processing of samples by Diamond Indicator Processing (Thunder Bay, Ontario) using a magnetic separator for magnetite removal and methylene iodide for mica removal using dilute methylene iodide (specific gravity 3.2) (0.25-0.5mm and 0.5-0.1 mm fractions).

Analytical Suites:

1  Canamera and Diamond Indicator Processing grain screening and Heavy Mineral Concentrates (0.25-0.5 mm, 0.5-1.0 mm).

Analytical Methods:

IndexColumn NameSuite OrderMethod OrderSuite RepeatQuantityUnitsDetermination Limit
1  Sample_Weight    Wt  grams  
2  Wt_Split_25_50    Wt  grams  
3  Wt_NFM_NPM_25_50    Wt  grams  
4  Wt_FM_PM_25_50    Wt  grams  
5  Wt_Lt_FM_PM_25_50    Wt  grams  
6  Wt_Hvy_FM_PM_25_50    Wt  grams  
7  Wt_Conc_Exam_25_50    Wt  grams  
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