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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
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OU-6

OU-6Purchase Code: IAG CRM-1

Price
IAG members: £ 100
Non-Members: £ 150

Certificate
Geostandards and Geoanalytical Research, 29 (2) 237-239

How to order: *.pdf


Material
Penrhyn Slate

Description

OU-6 Penrhyn Slate was obtained from the Penrhyn Slate Quarries, Bethesda, North Wales, located in a north-south trending belt that cuts across part of Snowdonia. The slate is fine-grained, purplish grey, well-cleaved and of Cambrian age. The rock was originally deposited as a mud and was recrystallised during low grade metamorphism. Caledonian deformation aligned fine-grained mica in the rock to produce the slaty cleavage. The rock is mineralogically homogeneous on a fine scale, with the exception of occasional green reduction spots (Fe2+) and crystals of pyrite.

The material is available in units of 35 g packaged in a polyethylene sachet.

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