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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