Friedelite data

 

 

Combinations on crystals of friedelite
  Forms Illustrations
1 c, m1, r1 Figure 133
2 c, q, s1, t1 Figure 134
3 c, m1, s1 Figure 135

 

Partial angle table of friedelite

Form

r

Computed

Measured

°

´

Number of readings
r1(1011)

31

33

32°   00´

1

q(4045)

27

0

26°   15´

2

t1(0.15.15.2)

78

10

78°   00´

4

s1(15.015.2)

84

2

83°   00´ to 85°  00´

6

 

Analyses of friedelite
 

1

2

3

4

5

6

SiO2

34.45

35.36

34.69

33.99

36.35

34.73

MnO

51.48

55.80

48.00

50.73

46.67

54.80

MgO

1.54

 

0.98

1.45

0.05

 
FeO

0.68

 

1.45

0.54

5.27

 
ZnO

1.43

 

1.05

0.77

0.32

 
CaO    

0.63

 

Trace

 
Cl

0.29

 

3.43

2.32

3.08

3.42

H2O

9.74

8.84

11.02

9.40

8.86

7.82

As2O3      

1.15

   
Al2O3

Trace

     

0.03

 
 

99.61

100.00

101.25

100.35

100.63

100.77

O = Cl

0.06

 

0.77

0.52

0.69

0.77

 

99.55

 

100.48

99.83

99.94

100.00

1. Chlorine-low friedelite, specific gravity 3.041, Franklin. L. H. Bauer (260), analyst.
2. Computed composition of chlorine-free friedelite.
3. Normal friedelite, Franklin. W. T. Schaller (195), analyst.
4. Normal friedelite, Franklin. L. H. Bauer (260), analyst
5. Normal friedelite, Franklin. R. B. Gage (233), analyst.
6. Computed composition of normal friedelite.

 
 
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