OREAS Update February 2015

  • January saw the release of six new epithermal Ag-Cu-Au ore CRMs (OREAS 600 series) and two medium grade Mn ore CRMs (OREAS 171 & 172).
  • This month five new VMS Zn-Pb-Cu-Ag-Au ore CRMs have been released (OREAS 620 series – our catalogue has been updated to include these new CRMs).
  • The release of six new carbonatite-hosted REE ore CRMs is imminent.
  • A suite of four Cu-Au oxide ore CRMs will follow in early May.
  • Three greenstone-hosted Au ores will be available (3.0ppm, 3.5ppm and 6.6ppm Au) around April.
  • Merensky Reef PGE ore material is currently in transit to our premises to develop into a suite of CRMs (anticipated certification date Q3).
  • Another suite of IOCG CRMs will be developed in Q2 (for Q3 release) to replenish our existing stock (see OREAS 59a, 59b, 59c and 59d).

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.

Grades shown below.

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

OREAS 460 to 465 (ranging 0.5-10% TREO) are sourced from Lynas Corporation’s Mount Weld Mine in WA, Australia. Certified products available late February 2015.

  1. Four Cu-Au oxide ore CRMs

OREAS 905 to 908 consist of oxide copper-gold ore sourced from MMG’s Golden Grove deposit in Western Australia. Certificates are expected to be available in early May, 2015. Target grades shown below.

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

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. Certificates are expected to be available Q2, 2015. Target grades shown below.

OREAS Au ppm
214 3.0
215 3.5
216 6.6
  1. Four Merensky Reef PGE ore CRMs

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

Certificates are expected to be available Q3 2015.

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
  • 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

Certificates are expected to be available Q3 2015.