Lunijianlaite

Formula:  LiAl₆Si₇AlO₂₀(OH,O)₁₀

Origin of name:  From Chinese luni = chlorite group, jian = alteration and la = pyrophyllite

Crystal system:  Triclinic

Crystal class:  Unknown

Twinning: 

Unit cell: 

Colour:  Colourless, white

Diaphaneity:  Transparent

Luster:  Pearly, vitreous

Habit:  Interstratified with cookeite and pyrophyllite, crystals, 0.4-1.2 mm, acicular in radiating aggregates 0.8-2 mm across

Hardness:  2

Specific gravity:  2.75

Cleavage:  1; {001} perfect

Tenacity: 

Streak: 

Synonyms/varieties:

Comments: