Swedenborgite

Formula: NaBe4SbO7

Origin of name: for E. Swedenborg, Swedish philosopher

 

Crystal system: hexagonal

Crystal class: 6mm

Twinning: 

Unit cell: 

 

Colour: colourless, pale wine yellow to honey-yellow

Diaphaneity: transparent

Luster: vitreous

Habit: crystals short prismatic, to 8 mm

Hardness: about 8

Specific gravity: 4.29

Cleavage: 1; {0001} distinct

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments: 

 

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