Analytical Suite Metadata
ODM Heavy Mineral Concentration and grain separation: no VG counts-kimberlite boulders [#2]
Overburden Drilling Management Heavy Mineral Concentration and grain separation. Kimberlite boulders are crushed and disaggregated and the sediment is separated and sieved into the 0.106-0.25 mm, 0.25-0.5 mm, 0.5-1.0 mm and 1-2 mm fractions.
Overburden Drilling Management indicator mineral grain separation. The sample is split into a series of fractions as a precursor to mineral grain identification. This procedure is slightly different than the standard ODM flow chart.
Kimberlite boulders are disaggregated and screened with a 2 mm, 1 mm and 0.106 mm mesh respectively. The < 0.106 mm-1.00 mm fraction is pre-concentrated with respect to density using a shaker table. Samples are run twice through the shaking table. The table concentrate is then put through diluted methylene iodide (specific gravity of 3.2) and the heavy mineral concentrate (HMC) is collected. The HMC is ferromagnetically separated and the non-ferromagnetic heavy mineral concentrate (NFM-HMC) is screened to recover the 0.25-0.50 mm and 0.5-1.0 mm fractions to be picked for indicator minerals. The 1-2 mm fraction is separated using methelyne iodide (SG 3.2) and separated magnetically with a hand magnet. No gold grains are recovered.
(Description taken from Open File 4361)
|1||Bulk Weight (kg) (Should equal 2 + 3 + 8)|
|2||Oversize clasts (>2 mm) (g)|
|3||<0.106 mm total|
|4||0.106-2 mm methylene iodide (M.I.) separation-M.I. light fraction (g)|
|5||0.106-2 mm methylene iodide separation-M.I heavy fraction total (g) (not listed in apppendix but most likely the sum of 6 + 7)|
|6||0.106-2 mm methylene iodide (M.I.) separation-M.I heavy fraction ferromagnetic total (g)|
|7||0.106-2 mm methylene iodide (M.I.) separation-M.I heavy fraction non-ferromagnetic total (g)|
|8||M.I. heavy fraction non-ferromagnetic processed split -0.106 0.25 mm (wash) (g)|
|9||M.I. heavy fraction non-ferromagnetic processed split 0.25-0.5 mm (g)|
|10||M.I. heavy fraction non-ferromagnetic processed split 0.5-1 mm (g)|
|11||M.I. heavy fraction non-ferromagnetic processed split 1-2 mm (g)|
Sample material: solid
Sample weight: unstated
|Index||Method Order||Method ID||Quantity||Detection Limit|
Associated Analytical Packages:
|Index||Package ID||Package Name|
|1||219||ODM Heavy Mineral Separation (kimberlite boulders #2)|
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