Calibration

Calibrations are done using a series of from 30-40 geologic standards. The standards we use are supplied by the following agencies:

USGS (United States Geological Survey)

AGV-1, BCR-1, BHVO-1, BIR-1, DNC-1, DTS-1, GSP-1, G-2, MAG-1, PCC-1, QLO-1, RGM-1, SCO-1, SDC-1, SDO-1, SGR-1, STM-1, W-1, W-2

CCRMP (Canadian Certified Reference Materials Project)

MRG-1, SY-2

CRPG (Centre de Recherches Petrographiques et Geochemiques, France)

BR, GA, GH, Mica-Fe, Mica-Mg

ANRT (Association Nationale de la Recherche Technique, Paris)

BX-N, DR-N, DT-N, FK-N, GS-N, UB-N, VS-N

GIT-IWG (Groupe International de Travail- International Working Group)

AC-E, AL-1, AN-G, BE-N, IF-G, MA-N, PM-S, WS-E

MINTEK (Council for Mineral Technology, South Africa)

NIM-D, NIM-G, NIM-L, NIM-N, NIM-P, NIM-S

GSJ (Geological Survey of Japan)

JB-1

A compilation of working values can be found in the Geostandards Newsletter, Vol XVIII, Special Issue, July 1994 [K. Govindaraju, ed.].