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WMS-1a塊狀硫化物成分分析標(biāo)準(zhǔn)物質(zhì)Massive Sulphide PGE Material

Table 1 - WMS-1a Certified Values
Element Units Mean Within-lab Standard Deviation Between-labs Standard Deviation 95% Confidence Interval of Mean
Al % 1.350 0.021 0.084 0.051
As μg/g 30.9 2.9 4.8 2.9
Au μg/g 0.300 0.043 0.040 0.018
Ca* % 3.09 0.05 0.17 0.11
Cu** % 1.396 0.014 0.045 0.021
Fe % 45.4 0.5 1.2 0.6
Ni % 3.02 0.05 0.15 0.07
Pd μg/g 1.45 0.05 0.11 0.05
Pt μg/g 1.91 0.07 0.10 0.05
Rh μg/g 0.222 0.015 0.052 0.038
S % 28.17 0.27 0.96 0.69
* Certified value with digestions by two acids excluded as statistical outliers.
** Certified value with digestions by two acids excluded as method outliers based on statistical tests.
Table 2 – WMS-1a Provisional Values
Element Units Mean Within-lab Standard Deviation Between-labs Standard Deviation 95% Confidence Interval of Mean
Ag μg/g 3.7 0.2 1.3 0.5
Co % 0.145 0.002 0.017 0.008
Cr μg/g 68 3 15 10
K % 0.0991 0.0034 0.0094 0.0073
Ir* μg/g 0.322 0.010 0.018 0.019
Mg % 0.331 0.007 0.035 0.022
Mn μg/g 600 10 120 70
Na % 0.0329 0.0034 0.0074 0.0065
Ru* μg/g 0.145 0.007 0.013 0.015
Sb μg/g 6.92 1.01 0.98 0.96
Sr μg/g 31.3 0.7 5.2 4.3
Ti μg/g 840 20 120 80
V μg/g 140 6 25 21
Zn μg/g 130 4 19 8
*Statistical analysis of the results for these elements warrants classification as Provisional, despite only
6 sets for ruthenium and 7 sets for iridium. Ruthenium value is based on nickel sulphide fire assay only.
Table 3 – WMS-1a Informational Values
Analyte Units Mean Number of accepted
laboratories / values
Ba μg/g 70 7 / 35
Bi μg/g 1.2 3 /15
C % 0.1 2 / 10
Cd μg/g 1.4 4 / 20
Ce μg/g 7.9 4 / 20
Cu (AD2)* % 1.34 6 / 30
Cs μg/g 0.6 4 / 20
Dy μg/g 0.8 3 / 15
Er μg/g 0.4 3 / 15
Eu μg/g 0.2 4 / 20
Ga μg/g 4 3 / 15
Gd μg/g 0.8 3 /15
Hf μg/g 0.5 4 / 20
Ho μg/g 0.2 3 / 15
In μg/g 0.2 3 / 15
La μg/g 4.3 5 / 30
Li μg/g 3 4 / 20
H2O (105 – 110°C) % 0.2 2 / 10
LOI ** % 11 2 / 10
Lu μg/g 0.08 3 / 15
Mo μg/g 3.0 7 / 35
Nb μg/g 2.0 3 / 15
Nd μg/g 4 3 / 15
Os μg/g 0.15 3 / 12
P % 0.018 7 / 35
Pb μg/g 33 18 / 88
Pr μg/g 1.0 3 / 15
Rb μg/g 3 3 / 15
Sc μg/g 3 4 / 25
Se μg/g 87 7 / 40
Si % 4.7 6/ 30
Sm μg/g 0.8 4 / 25
Sn μg/g 2.3 4 / 20
Ta μg/g 0.1 3 / 15
Tb μg/g 0.1 3 / 15
Th μg/g 1.2 3 / 15
Tm μg/g 0.08 3 / 15
U μg/g 0.5 4 / 20
Y μg/g 4 4 / 20
Yb μg/g 0.5 4 / 20
Zr μg/g 20 4 / 20
* Copper by two acid digestion (AD2) only
** Loss on ignition at 1000 – 1050°C
Source
The raw material used to prepare WMS-1a was obtained from the Wellgreen property, near Whitehorse, Yukon. The mine is owned by Northern Platinum Limited. WMS-1a was obtained from the same mine as its predecessor, WMS-1, which is no longer available.
Description
Major species include pyrrhotite (59.7%), clinochlore (11.2%), mainly actinolite plus traces of sepiolite (9.1%), pentlandite (8.8%), clinopyroxene (6.0%), and chalcopyrite (4.1%). Minor species include mica (0.8%), magnetite (0.2%) and galena (0.1%).
Intended use
WMS-1a is suitable for the analysis of gold, platinum group elements and various other elements at major, minor and trace levels in minerals. Examples of intended use include quality control, method development, environmental assessment and the calibration of equipment.
Instructions for use
WMS-1a should be used "as is", without drying. The contents of the bottle should be thoroughly mixed before taking samples. The contents of the bottle should be exposed to air for the shortest time possible. Unused material should be stored under an inert gas in a desiccator, or in a new, heat-sealed laminated foil pouch. The values herein pertain to the date when issued. CanmetMINING is not responsible for changes occurring after shipment.
Handling instructions
Normal safety precautions for handling fine particulate matter are suggested, such as the use of safety glasses, breathing protection, gloves and a laboratory coat.
Method of preparation
The raw material was crushed, ground, and sieved to remove the plus 74 μm fraction. The product was blended, then bottled in 200-gram units. The yield was 83%. Each bottle was sealed under nitrogen in a laminated aluminum foil-mylar pouch to prevent oxidation.