The beta (high) Quartz
Structure
Last modified 5 April
2001
You can now
This is the high-temperature phase of alpha
quartz.
- Prototype: beta SiO2
- Pearson Symbol: hP9
- Strukturbericht Designation: C8
- Space Group: P6222 (Cartesian and lattice coordinate listings
available)
- Number: 180
- Primitive Vectors:
- A1 = ½ a X - ½ 31/2
a Y
- A2 = ½ a X + ½ 31/2
a Y
- A3 = c Z
- Basis Vectors:
The Si atoms are on the (3c) sites, and the O atoms are on the
(6j) sites
- B1 = ½ A1 = ¼ a
X - ¼ 31/2 a Y (Si)
- B2 = ½ A2 + 2/3
A3 = ¼ a X + ¼ 31/2 a
Y + 2/3 c Z (Si)
- B3 = ½ A1 + ½
A2 + 1/3 A3 = ½ a X
+ 1/3 c Z (Si)
- B4 = x A1 + 2 x
A2 + ½ A3 = 3/2 x a
X + ½ 31/2 x a Y + ½ Z
(O)
- B5 = -2 x A1 - x
A2 + 1/6 A3 = - 3/2 x a
X + ½ 31/2 x a Y + 1/6 Z
(O)
- B6 = x A1 - x
A2 + 5/6 A3 = - 31/2
x a Y + 5/6 Z (O)
- B7 = - x A1 - 2 x
A2 + ½ A3 = - 3/2 x a
X - ½ 31/2 x a Y + ½ Z
(O)
- B8 = 2 x A1 + x
A2 + 1/6 A3 = + 3/2 x a
X + ½ 31/2 x a Y + 1/6 Z
(O)
- B9 = - x A1 + x
A2 + 5/6 A3 = + 31/2
x a Y + 5/6 Z (O)
Go back to the Quartz and Related Structures page.
Go back to Crystal Lattice Structure
page.
Structures indexed by:
