Liottite

Formula:  (Na,K)16Ca8(Si18Al18O72)(SO4)5Cl2

Origin of name:  For L. Liotti, Italian collector

 

Crystal system:  Hexagonal

Crystal class:  -6m2

Twinning: 

Unit cell: 

 

Colour:  Colourless

Diaphaneity:  Transparent

Luster: 

Habit:  Euhedral prisms, flattened

Hardness:  5

Specific gravity:  2.56

Cleavage:  None

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments: 

 

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