Analytical Suite Metadata

ODM HMC separation



Overburden Drilling Management, heavy mineral separation, as described in GSC Open File 7075 (2012).

General Methodology:

Overburden Drilling Management indicator mineral grain separation.  The sample is separated into several size and magnetic fractions, as a precursor to mineral grain identification.  The procedure corresponds to the standard ODM flow chart.

The sample is disaggregated and screened with a 2mm mesh.  The <2 mm fraction is pre-concentrated with respect to density using a shaker table.  The table concentrate is then put through diluted methylene iodide (specific gravity of 3.2) and the heavy mineral concentrate is collected.  After a ferromagnetic separation, the nonferromagnetic heavy mineral concentrate (NFM-HMC) is screened to recover the 0.25-0.50 mm, 0.5-1 mm and 1-2 mm fractions for indicator mineral picking.  Numerous weights are recorded during the procedure, as listed in the table below:

1 Bulk received (kg)
2

Table split (kg)

(usually 0.5 kg less than the bulk received)

3 Oversize clasts ( > 2 mm) (kg)
4 Table feed
5

< 2 mm table concentrate total (g)

(should equal the sum of rows 6 + 7 + 8 + 9)

6 < 0.25 mm fraction, sieved from <2 mm fraction, prior to heavy liquid separation.  The < 0.25 mm size fraction may be subjected to heavy liquid separation separately from the 0.25-2.00 mm size fraction.
7 < 2 mm table concentrate heavy liquid separation – heavy liquid lights (g)
8 < 2 mm table concentrate heavy liquid separation – magnetic HMC (g)
9 < 2 mm table concentrate heavy liquid separation – non-ferromagnetic HMC total (g)
10

< 2 mm table concentrate heavy liquid separation – non-ferromagnetic HMC processed split total (g)

(usually equal to row 9)

(should equal the sum of rows 11 + 12 + 13 + 14)

11 < 2 mm table concentrate heavy liquid separation – non-ferromagnetic HMC processed split – < 0.25 mm wash (g)
12 < 2 mm table concentrate heavy liquid separation – non-ferromagnetic HMC processed split – 0.25 to 0.5 mm (g)
13 < 2 mm table concentrate heavy liquid separation – non-ferromagnetic HMC processed split – 0.5 to 1 mm (g)
14 < 2 mm table concentrate heavy liquid separation – non-ferromagnetic HMC processed split – 1.0 to 2.0 mm (g)

(Source of description? ; very similar to suite # 224)

Instrument: unstated

Sample material: solid

Sample weight: unstated


Analytical Technique:

Hierarchical classification

Technique >> Physical techniques >> Mineral grain separation

Children

None


Analytical Decomposition:

Hierarchical classification

Decomposition >> None

Children

None


Analytical Methods:

IndexMethod OrderMethod IDQuantityDetection Limit
1  6001     Wt_Bulk_Recvd 
2  6003     Wt_Tbl_Split 
3  6004     Wt_gt_2mm 
4  6005     Wt_Tbl_Feed 
5  6020     Wt_lt_2mm 
6  6007     Wt_Fn_Sieve 
7  6008     Wt_HvLq_Lgt 
8  6009     Wt_HvLq_Mag 
9  6010     Wt_NM_Tot 
10  10  6021     Wt_NM_Split 
11  11  6012     Wt_NM_lt_025_wash 
12  12  6013     Wt_NM_025_050 
13  13  6014     Wt_NM_050_100 
14  14  6015     Wt_NM_100_200 

Associated Analytical Packages:

IndexPackage IDPackage Name
1  253     ODM HMC separation and KIM + MMSIM picking
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