OREAS 142

OREAS 142 is a high grade Sn oxide ore certified reference material (CRM) prepared by Ore Research & Exploration. The material was sourced from the Doradilla Project located in north central NSW. The project area consists of a large Sn laterite deposit underlain by Sn silicate skarn with potential for copper, nickel, indium and zinc mineralisation. The skarn horizon has a strike length of 16km with zones of oxide, supergene and primary Sn mineralization. Compositionally OREAS 142 is dominated by smectite clay with minor quartz, kaolin and goethite. Sn mineralization occurs as varlamoffite [(Sn,Fe)(O,OH)2] with some relict cassiterite. OREAS 142 is one of three tin CRMs prepared from oxide material and characterised for Ag, As, Bi, Cu, In, Mo, Pb, Zn and Sn.

Analyte Certified Value 1SD 95% Confidence Limits Low 95% Confidence Limits High Method
Sn, Tin (wt.%) 1.04 0.050 1.01 1.07 Borate / Peroxide Fusion ICP
Bi, Bismuth (ppm) 242 17 229 254 4-Acid Digestion
Cu, Copper (ppm) 1466 65 1420 1512 4-Acid Digestion
Sn, Tin (ppm) 10800 1 1 Pressed Powder Pellet XRF
Ag, Silver (ppm) 1.22 0.120 1.13 1.32 4-Acid Digestion
As, Arsenic (ppm) 584 38 555 613 4-Acid Digestion
In, Indium (ppm) 45.0 5.0 39.0 50.0 4-Acid Digestion
Mo, Molybdenum (ppm) 2.99 0.190 2.94 3.04 4-Acid Digestion
Pb, Lead (ppm) 54 3.8 52 57 4-Acid Digestion
Zn, Zinc (ppm) 2436 82 2381 2492 4-Acid Digestion
Downloads
Certificate DataPack SDS NRAM (412 KB)
Archived

This CRM is no longer available.
Information is provided for reference only.

Specifications