Major constituent

Wt%

trace constituent

Wt%

SiO₂

74.00

RE₂O₃

1.90

TiO₂

1.23

Nb₂O₅

1.25

Al₂O₃

5.00

Ta₂O₅

0.13

Fe₂O₃

5.10

ZrO₂

1.12

CaO

1.64

U₃O₈

0.01

MgO

0.80

ThO₂

0.04

MnO

0.05

Na₂O

2.03

K₂O

4.90

P₂O₅

0.06

LOI*

0.74

Total

100.0