Whole-Rock Analysis

Samples are totally dissociated by fusion with an alkaline salt, then dissolution in a mineral acid. The resulting solution is analyzed for the major oxide-forming elements, and the results are expressed as oxides.

Loss-on-ignition is determined gravimetrically and used to calculate the total percentage of the sample in the elements reported.

Code

Description

WR-001

~0.15g subsample of the analytical pulp is fused with lithium metaborate at 1,000°C and dissolved in nitric acid. Major elements are determined by ICP-OES. Iron is reported as total iron.

Al2O3(0.01%)	CaO(0.01%)	FeO(0.01%)	K2O(0.01%)	Na(0.01%)	MgO(0.01%)
MnO(0.01%)	Na2O(0.01%)	P2O5(0.01%)	SiO2(0.01%)	TiO2(0.01%)	LOI(0.01%)

WR-02

Determination of trace elements from WR-01 (PPM)

As	50	Ba	20	Ce	100	Cd	20	Co	50	Cr	50	La	50
Mo	50	Nb	50	Pb	50	Sn	50	Sr	20	Ta	50	V	20
W	50	Y	10	Zn	20	Zr	20	Sc	5