
DYOS Tool

Natural Minerals Group

From the standards library of SPI Supplies and the C. M. Taylor Company

# AS5460-AB

Monazite (High Th)

CePO₄

Element	Wt %	Oxide	Wt %
O	26.45
Si	0.83	SiO₂	1.78
P	11.85	P₂O₅	27.16
Ca	0.65	CaO	0.91
Y	1.59	Y₂O₃	2.02
La	7.84	La₂O₃	9.20
Ce	19.96	Ce₂O₃	23.38
Pr	2.47	Pr₂O₃	2.89
Nd	9.68	Nd₂O₃	11.29
Sm	3.70	Sm₂O₃	4.29
Eu	0.38	Eu₂O₃	0.44
Gd	2.89	Gd₂O₃	3.34
Tb	0.35	Tb₂O₃	0.41
Dy	1.21	Dy₂O₃	1.39
Pb	0.25	PbO	0.27
Th	9.70	ThO₂	11.03
U	0.16	UO₂	0.19

Sum	100.0	Sum	100.0

From Buenopolis,Brazil.
Click here for a mineralogical account of everything you might want to know about Monazite.

Name	Description	SPI #	Each
Monazite (High Th)	SPI Supplies® Individual Mounted Microanalysis Standard Item	AS5460-AB	$
Monazite (High Th)	SPI Supplies® Individual Loose Microanalysis Standard Item	AS5465-AB	$

# AS5470-AB

Monazite (Th free)

Alternate - either version of this item may be used in our Off-The-Shelf Standards

CePO₄

Element	Wt %	Oxide	Wt %
O	27.26
Si	0.15	SiO₂	0.32
P	12.73	P₂O₅	29.17
S	0.25	SO₃	0.63
Y	1.60	Y₂O₃	2.03
La	12.47	La₂O₃	14.63
Ce	26.77	Ce₂O₃	31.36
Pr	4.83	Pr₂O₃	5.65
Nd	11.18	Nd₂O₃	13.04
Sm	0.79	Sm₂O₃	0.92
Eu	0.66	Eu₂O₃	0.76
Gd	1.24	Gd₂O₃	1.43
U	0.06	UO₂	0.07

Sum	100.0	Sum	100.0

From Siglo XX Mine, Llallagua, Bolivia.
Click here for a mineralogical account of everything you might want to know about Monazite.

Name	Description	SPI #	Each
Monazite (Th free)	SPI Supplies® Individual Mounted Microanalysis Standard Item	AS5470-AB	$
Monazite (Th free)	SPI Supplies® Individual Loose Microanalysis Standard Item	AS5475-AB	$

# AS1240-AB

Monazite

Alternate - either version of this item may be used in our Off-The-Shelf Standards

(Ce,La,Th)PO₄

Element	Wt %	Oxide	Wt %
O	27.08
Si	0.70	SiO₂	1.50
P	12.44	P₂O₅	28.50
Ca	0.40	CaO	0.56
Y	0.51	Y₂O₃	0.65
La	13.56	La₂O₃	15.90
Ce	29.46	Ce₂O₃	34.50
Pr	3.33	Pr₂O₃	3.90
Nd	8.14	Nd₂O₃	9.50
Sm	0.86	Sm₂O₃	1.00
Eu	0.10	Eu₂O₃	0.09
Gd	0.39	Gd₂O₃	0.45
Tb	0.03	Tb₂O₃	0.04
Dy	0.10	Dy₂O₃	0.12
Th	2.79	ThO₂	3.17

Sum	99.9	Sum	99.9

Locality: Kulyk Lake, Saskatchewan, Canada
2mm grid

The composition has recently been confirmed by instrumental neutron activation analysis.
Click here for a mineralogical account of everything you might want to know about Monazite.

Name	Description	SPI #	Each
Monazite	SPI Supplies® Individual Mounted Microanalysis Standard Item	AS1240-AB	$
Monazite	SPI Supplies® Individual Loose Microanalysis Standard Item	AS1245-AB	$