Table 1 Misorientation angles ωmis and corresponding misorientation axis components in fractional crystallographic coordinates [uvw] as well as corresponding mirror plane (hkl) for the systematically reoccurring orientation relationships or twin relationships. For the integer coordinates, the equivalent bravais notations are also given. The standard deviations of the [uvw] values are given in brackets, with respect to the last digit of the [uvw] value. The [uvw] values in square brackets give the standard deviation of coordinates converted to an angle. The table also lists the closest operation with integer crystallographic indices and a 2-fold axis or mirror operation, respectively.

From: Statistical analysis of EBSD data confirms pronounced classical and non-classical pervasive crystallographic twinning in rotaliid foraminiferal calcite

ωmis (°)

 

u

v

w

 

60.0(5)

 

0.00(4) [1.7°]

0.00(5) [1.6°]

1.000(4) [0.0°]

in crystals A and B

 

0° from

0

0

1

 

76.6(8)

 

6.0(1) [0.4°]

− 6.0(1) [0.3°]

0.99(2) [0.7°]

 
 

0.3° from

6

– 6

1

in crystal A

 

0.3° from

6

− 6

1

in crystal B

 

Bravais

[6 −6 0 1]

 

The above approximately equivalent to the two following operations:

180° around

2.3° from

4

5

1

in crystal A

 

Bravais

[1 2 −3 1]

 
 

2.3° from

5

4

− 1

in crystal B

 

Bravais

[2 1 −3 1]

 

mirror plane

5.1° from

(1 2 9)

in crystal A

 

Bravais

(1 2 −3 9)

 
  

(2  1 −9)

in crystal B

 

Bravais

(2 1 −3 9)

 

78.2(6)

 

8.92(5) [0.2°]

8.92(8) [0.4°]

1.02(3) [0.7°]

 
 

0.5° from

9

9

1

in crystal A

 

0.5° from

9

9

1

in crystal B

 

Bravais

[3 3 −6 1]

   
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