Bøgvadite

Formula:  Na2SrBa2Al4F20

Origin of name:  For R. Bøgvad

 

Crystal system:  Orthorhombic

Crystal class:  Unknown

Twinning:

Unit cell:

 

Colour:  Colourless

Diaphaneity:  Transparent

Luster:  Vitreous

Habit:  Blocky somewhat rounded crystals 0.05-0.15 mm

Hardness:  4

Specific gravity:  3.85

Cleavage:  None

Tenacity:

Streak:  White

 

Synonyms/varieties:

 

Comments:

 

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