Emeleusite

Formula:   Na4Li2Fe2Si12O30

Origin of name:   For C. Emeleus, English petrologist

 

Crystal system:   Orthorhombic, pseudohexagonal

Crystal class:   2/m 2/m 2/m

Twinning:

Unit cell: 

 

Colour:  Colourless

Diaphaneity:  Transparent

Luster:   Vitreous

Habit:   Crystals tabular

Hardness:   5 to 6

Specific gravity:   2.76

Cleavage:   None

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments:

 

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