Material
- Name
- CH4 crystalline - phase I
- Origin
- laboratory
- Comments
- compact monocrystal slab, with few small cracks (out of IR beam) and stress birefringence developing at low temperature
- Texture
- compact
- Grain sizes
-
Grains Size min Size max Size median Size width Size mass fraction Grain shape #1 10.0 $mm$ 20.0 $mm$ 1.0 equant - Size method
- visually, using lamp and polarizers to detect crystal grain boundaries