columnar crystal मीनिंग इन हिंदी

Selenite crystals sometimes will also exhibit bladed rosette habit ( usually transparent and like desert roses ) often with accompanying transparent, columnar crystals.
Dihydrate is a columnar crystal, and it is so unstable that it easily dehydrates to anhydrous and is easily oxidized by oxygen in the air.
Selenite crystals commonly occur as tabular, reticular, and columnar crystals, often with no imperfections or fluid inclusion when the crystal formed ( see Pe�oles Mine reference in external links ).
However, in the case of sun dogs, the columnar crystals are oriented vertically, whereas in the case of Lowitz arcs, Galle proposed, the crystals oscillated about their vertical axes.
After several hours the temperature is reduced in a controlled and gradual manner, resulting in the formation of flawless columnar crystals that are typically about 5 cm long by 2.5 cm wide, although they may be grown much larger.