• Zircon 91500
    Zircon 91500
  • Reference Materials
  • DROsS

Certified Reference Materials

Purchase CodeNameMaterialCertificate* Price
        * discount available to IAG members
IAG CRM-1 OU-6 Penrhyn Slate OU-6 certificate 150 GBP
IAG CRM-2 MGL-GAS Serpentinite GAS certificate 150 GBP
IAG CRM-3 MGL-OShBO Alkaline Granite OShBO certificate 150 GBP
IAG CRM-4 OKUM Komatiite Ontario OKUM certificate 150 GBP
IAG CRM-5 MUH-1 Harzburgite Kraubath MUH-1 certificate 150 GBP


MUH-1Purchase Code: IAG CRM-5

IAG members: £ 100
Non-Members: £ 150

preliminary certificate

How to order: *.pdf

Harzburgit Kraubath

Sample description
“Montauniversität Harzburgite” MUH-1 is an ultramafic rock powder reference material certified for major and trace element mass fractions. This material is typical of a partially serpentinized harzburgite.

Sampling location
The source material for MUH-1 was derived from the “Hartsteinwerke Preg” quarry near Kraubath, Styria, Austria (Latitude: 47°17'2"N, Longitude: 14°56'53"E). This quarry is the largest of its kind that accesses the massive mantle section of the Spike Complex. The main part of this complex is composed of highly depleted serpentinites with typical harzburgitic compositions.

Sample preparation
Approximately 150 kg of crushed material from the “Hartsteinwerke Preg” quarry were shipped to Ontario Geoscience Laboratories for grinding, homogenizing and bottling of the material. The material was ground to 90% ≤63 µm (230-mesh) in a continuous-feed Cr-steel ring mill and blended for 24 hours in a large-capacity blender. Approximately 80 kg of the pulverized material was subsequently transferred into 100 g jars for distribution.

Mineralogical composition

Automated point counting gives the following mineral composition:
Serpentine ~57 vol%
Olivine (Fo89.8) ~35 vol%
Brucite ~5 vol%
Tremolite/calcic amphibole  1.1 vol%
Magnetite 0.8 vol%
Talc 0.7 vol%
Chromite 0.5 vol%
Enstatite 0.2 vol%
Fe-Ni sulphide <0.01 vol%

Our Association