Lemoynite

Formula:  (Na,K)2CaZr2Si10O26 . 5-6H2O

Origin of name:  For Charles Lemoyne, prominent figure in Canadian history

 

Crystal system:  Monoclinic

Crystal class:  2/m

Twinning: 

Unit cell: 

 

Colour:  Whitish with light yellow tint

Diaphaneity: 

Luster:  Vitreous

Habit:  Crystals prismatic, minute, in spherulites

Hardness:  ~ 4

Specific gravity:  2.29

Cleavage:  2; {001} and {010} distinct

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments: 

 

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