OREAS Update May 2015

New OREAS CRM suites already released this year:

  • six new epithermal Ag-Cu-Au ore CRMs (OREAS 600 series)
  • two medium grade Mn ore CRMs (OREAS 171 & 172)
  • five new VMS Zn-Pb-Cu-Ag-Au ore CRMs (OREAS 620 series)
  • six new carbonatite-hosted REE ore CRMs (OREAS 460 series)

 Upcoming OREAS CRM suites:

  • four Cu-Au oxide ore CRMs (OREAS 905-908), available late August
  • three greenstone-hosted Au ore CRMs (OREAS 214 to 216 with 3.0ppm, 3.5ppm and 6.6ppm Au, respectively), available September
  • Merensky Reef PGE ore CRMs, available early November
  • five IOCG CRMs to replenish our existing IOCG stock (see OREAS 59a, 59b, 59c and 59d), new stock available October

 Many of these suites will come under the SuperCRM classification we introduced last year (i.e. incorporate full ICP-OES and ICP-MS suite certifications). Details of the suites mentioned above are shown below along with a brief description and their expected grades.

  1. Five VMS Zn-Pb-Cu-Ag-Au CRMs (available now)

OREAS 620 to 624 are sourced from MMG’s Golden Grove mine in Western Australia.

OREAS Cu % Pb % Zn % Ag ppm Au ppm
620 0.18 0.77 3.15 40 0.68
621 0.36 1.36 5.22 69 1.25
622 0.48 2.21 10.2 103 1.85
623 1.73 0.25 1.0 22 0.83
624 3.10 0.62 2.4 46 1.16

Certification program includes:

  • Full elemental suite by sodium peroxide fusion with ICP-OES & MS;
  • Full elemental suite by 4-acid digest and by aqua regia digest with ICP-OES & MS;
  • Limited suite by 3-acid digest with ICP-OES & AAS;
  • Au by fire assay and by aqua regia digest with ICP finish;
  • S by Leco.
  1. Six carbonatite-hosted REE CRMs (available now)

OREAS 460 to 465 (ranging 0.53-9.88% TREO) are sourced from Lynas Corporation’s Mount Weld Mine in WA, Australia.

OREAS CeO2 ppm La2O3 ppm Nd2O3 ppm Pr6O11 ppm Nb2O5 ppm Total REO%
460 2209 1606 911 294 998 0.53
461 4311 3155 1900 590 1854 1.06
462 6082 4450 2985 888 2070 1.54
463 8100 5824 4295 1212 2139 2.08
464 1.88% 1.37% 1.16% 3138 2723 5.10
465 4.86% 2.83% 1.37% 4557 6695 9.88
  • REE suite XRF package;
  • Full elemental suite by 4-acid digest with ICP-OES & MS;
  • Full elemental suite by borate/peroxide fusion with ICP-OES & MS;
  • Thermogravimetry for Loss on Ignition at 1000 degrees celsius.
  1. Four Cu-Au oxide ore CRMs (available late August)

OREAS 905 to 908 consist of oxide copper-gold ore sourced from MMG’s Golden Grove deposit in Western Australia. Target grades:

OREAS Cu % Au ppm Ag ppm
905 0.14 0.36 0.43
906 0.30 0.05 0.7
907 0.61 0.1 1.3
908 1.20 0.19 2.3
  1. Three greenstone-hosted Au ore CRMs (available September)

OREAS 214 to 216 consist of primary gold ore sourced from Doray Mineral’s Andy Well deposit located north of Meekatharra in Western Australia and blended with Cambrian greenstone from Heathcote quarry in northern Victoria, Australia. Target grades:

OREAS Au ppm
214 3.0
215 3.5
216 6.6
  1. Four Merensky Reef PGE ore CRMs (available early November)

OREAS 680 to 683 will be sourced from Anglo American Platinum’s Dishaba Mine in South Africa.

Certification program to include:

  • Pt-Pd-Au by Pb fire assay;
  • Pt-Pd-Ru-Rh-Ir-(Os)-Au by NiS fire assay;
  • Ni, Cu and full suite ICP-OES and MS by aqua regia digestion;
  • Ni, Cu and full suite ICP-OES and MS by four acid digestion.
  1. Five IOCG ore CRMs (available October)

Target grades:

  • 0.29% Cu, 0.2ppm Au
  • 0.6% Cu, 0.3ppm Au
  • 0.9% Cu, 0.6ppm Au
  • 1.7% Cu, 0.8ppm Au
  • 2.75% Cu, 1.8ppm Au