Formula

Si

Al

Ti

Fe2

Mn

Mg

Ca

Na

K

Cations

Ab

An

Or

1

10.654

5.488

0.013

0.001

0

0.011

0.698

3.411

0.018

20.294

82.7

16.9

0.4

2

11.078

4.816

0.003

0.04

0

0

0.888

3.345

0.014

20.184

78.8

20.9

0.3

3

11.075

4.734

0.118

0.007

0

0

0.831

3.319

0.018

20.102

79.6

19.9

0.4

4

10.903

5.003

0.027

0

0

0

1.103

3.029

0.02

20.085

73

26.6

0.5

5

10.839

5.008

0.054

0

0

0

1.126

3.118

0.02

20.165

73.1

26.4

0.5