Geochemistry Guide 2025

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The oxidizing borate fusion method (XRF76) is suitable for mineralized samples with sulphides, metal concentrates, metallurgical samples as well as ferro alloys, with the exception of FeSi. The default oxidizer is NaNO3, some sites offer LiNO3 to enable Na2O reporting. Please contact your SGS customer service agent.

Chromite ore XRF is the most recognized form of analysis for chromite ores in a high dilution borate fusion set up and is used throughout the mining lifecycle.

GO_XRF76 Analyte

GO_XRF72CR ANALYTE

Reported as

Standard

Extension

Extension with REE

Range

REPORTED AS

RANGE

Al

Al 2 O 3 As 2 O 3 BaO Bi 2 O 3 CaO Ce 2 O₃ Co 3 O 4 Cr 2 O 3 CuO Cs 2 O Dy 2 O 3 Eu 2 O 3 Fe 2 O 3 Gd 2 O 3 F La 2 O 3 MgO Mn 3 O 4 MoO 3 Na 2 O Nb 2 O 3 Nd 2 O 3 HfO 2 K 2 O

X

X

X

0.01 - 100% 0.01 - 10% 0.01 - 40% 0.01 - 20% 0.01 - 80% 0.02 - 50% 0.01 - 100% 0.01 - 75% 0.01 - 75% 0.01 - 25% 0.02 - 10% 0.02 - 10% 0.5 - 50% 0.01 - 100% 0.02 - 10% 0.01 - 10% 0.01 - 40% 0.02 - 50% 0.1 - 80% 0.01 - 100% 0.01 - 50% 0.1 - 58% 0.01 - 50% 0.02 - 50% 0.01 - 100% 0.01 - 40% 0.01 - 100% 0.02 - 50% 0:02 - 35% 0.01 - 25% 0.1 - 100% 0.02 - 10% 0.01 - 100% 0.2 - 90% 0.01 - 20% 0.01 - 50% 0.01 - 3% 0.01 - 80% 0.01 - 1% 0.01 - 10% 0.01 - 70% 0:02 - 10% 0.01 - 70% 0.02 - 40% -10 - 100%

Al 2 O 3

0.02 - 100% 0.02 - 1% 0.02 - 20% 0.02 - 40% 0.02 - 5% 0.02 - 60% 0.02 - 5% 0.02 - 100% 0.02 - 10% 0.02 - 50% 0.02 - 50% 0.05 - 10% 0.02 - 10% 0.02 - 10% 0.02 - 5% 0.05 - 100% 0.02 - 1% 0.02 - 50% 0.02 - 1.8% 0.02 - 5% -10 - 100%

Al

As Ba

Optional

Optional

Optional

As 2 O 3 optional

As Ba Ca Co

X

X X X X X X

X

BaO CaO

Bi

Ca Ce Co

X

X X X X X

Co 3 O 4 optional

Cr 2 O 3

Cr

Optional

Cr

X X

Cu Fe

CuO optional

Cu Cs Dy Eu

Fe 2 O 3

Optional

Optional

K 2 O

K

X X

Mg Mn

MgO MnO Na 2 O

F

Optional

Optional

Optional

Na

Fe Gd

X

X

X X

Ni

NiO optional

Hf

Optional

Optional

Optional

P 2 O 5

P

K

X

X

X X X X

Pb

PbO optional

La

Si

SiO 2 SO 3 TiO 2 V 2 O 5

Mg Mn Mo Na Nb Nd

X X

X X X

S

Ti

Per Oxidizer

Per Oxidizer

Per Oxidizer

V

X

Zn

ZnO optional

X X X X X X

LOI (1000 0 C)*

LOI

Ni

NiO P 2 O 5 PbO

X X X

X X X X X X X X X X X X X X X

Dried only * G_PHY01V or G_PHY02V Additional grinding might be needed. Fluorspar

P

Pb

Pr

Pr 6 O 11 Rb₂O Sb 2 O 3

Rb Sb

Si

SiO 2

X

X X

SGS has the methodology to support testing of fluorspar material. Due to the nature of the test this scheme is only applicable to acid grade or other soluble fluorspar products.

Sm

Sm 2 O 3

Sn

SnO 2

S

SO 3 SrO

X

X X

Sr Ta Th

Optional

SOLUBLE FLUORSPAR PACKAGE CODE(S)

Ta 2 O 5 ThO 2 TiO 2 U 3 O 8 V 2 O 5 WO 3 Y2O3₃

ELEMENTS/ LIMIT(S)

DESCRIPTION EDTA Titration

CaCO 3 ( ≥ 0.1%)

GC_CLA27V

Ti U

X

X

CaF 2 ( ≥ 10%)

Calculation

V

X

X

W

Generic / multi-element ores Generic ore, concentrate and metallurgical materials compatible analytical methods with a wide dynamic range using XRF.

Y

X X

Zn

ZnO ZrO 2

X

X X

Zr

Optional Optional Optional

LOI (1000 0 C)*

Optional Optional

Optional Optional

≥ 0.01%

Moisture (as received)

GO_XRF70V PYROSULPHATE FUSION / XRF BASE METAL PACKAGE (10 ELEMENTS) ELEMENTS AND LIMITS Co 0.01 - 100% Fe 0.02 - 100%

* G_PHY01V or G_PHY02V

Ni 0.01 - 100% Pb 0.01 - 100% W 0.02 - 100%

Zn 0.01 - 100%

Cr 0.01 - 100% Cu 0.01 - 100%

Mn 0.01 - 100% Mo 0.005- 100%

40

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