Geochemistry Guide 2026

Rare earth element analysis Rare earth element (REE) samples can be analyzed using a variety of techniques depending on the concentration levels. The following packages are available for trace to percent level concentrations. Please contact your SGS customer service agent. The following exploration packages contain REEs or can have additional REEs requested.

Industrial minerals

Minerals most commonly used industrial activities, including construction, manufacturing, and technology

Bauxite XRF is the industry standard for elemental analysis of bauxite materials across the mining lifecycle.

Rare earth element add on trace packages CODE

ADDITIONAL ELEMENTS*

DESCRIPTION

GE_ IMS40Q12

Pr, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm

4-Acid digest / ICP-MS

*REE elements that can be added to existing package

GO/GT_XRF72BX ANALYTE

REPORTED AS

RANGE

Rare earth element inclusive trace packages CODE

Al 2 O 3 BaO CaO Cr 2 O 3 Fe 2 O 3

0.01 - 100% 0.01 - 5% 0.01 - 5% 0.01 - 1% 0.01 - 50% 0.01 - 1% 0.01 - 5% 0.01 - 10% 0.01 - 10% 0.01 - 10% 0.01 - 10% 0.05 - 100% 0.01 - 1% 0.01 - 5% 0.01 - 1% 0.01 - 1% -10 - 100%

Al

ADDITIONAL ELEMENTS*

DESCRIPTION

Ba Ca Cr Fe Ga

Sodium peroxide fusion / ICP-OES / ICP-MS

GE_ICP90A50 & GE_IMS90A50

Refer to pg 23 Refer to pg 24

GE_IMS95A50

Lithium metaborate fusion / ICP-MS

Ga 2 O 3 optional

GO_IMS91Q100 SODIUM PEROXIDE FUSION / ICP-MS REE ORE GRADE PACKAGE Ce 50 - 150,000 ppm La 50 - 50,000 ppm

K

K 2 O

Th

5 - 50,000 ppm

Mg Mn

MgO

Lu Nd

Tm 0.1 - 200 ppm

Dy

1 - 5,000 ppm 0.5 - 200 ppm 1 - 5,000 ppm 5 - 5,000 ppm 0.1 - 200 ppm

0.2 - 200 ppm 50 - 50,000 ppm 10 - 20,000 ppm 10 - 20,000 ppm

Mn 3 O 4

U Y

Er

1 - 200 ppm

Na

Na 2 O P 2 O 5 SiO 2 SO 3 TiO 2 V 2 O 5 ZrO 2

Pr

Eu Gd Ho

5 - 10,000 ppm

P

Sm

Yb

1 - 200 ppm

Si

Tb

1 - 500 ppm

S

Ti

V

Zr

LOI (1000 0 C)*

LOI

*G_PHY01V or G_PHY02V Dried sample only.

Bauxite - additional characterizations Reactive Silica and Available Alumina using standard bomb digest followed by ICP-OES analysis (GO_ICP10V500). Total Organic Carbon (non Carbonate) TOC and Total Carbon using IR combustion refer to page 25. FTIR based characterization GE_FTIR73BX (below) which includes the typical Bauxite minerals as well as phases correlated to chemistry.

GE_FTIR73BX Total Alumina

40.0 - 55.0% 5.0 - 60.0% 1.0 - 60.0% 1.0 - 29.0% 1.0 - 29.0%

Total Titanium Oxides

1.0 - 3.5%

Available Alumina

Quartz

1.0 - 100.0% 1.0 - 20.0% 1.0 - 100.0%

Total Silica

Goethite Kaolinite

Reactive Silica Total Iron Oxides

Obtain quantitative infra-red spectral data using an ATR based system including total oxide weight % calibrated against borate fusion XRF and reactive silica and aluminium calibrated against classical bomb digest. Additional compounds available upon request at extra cost.

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