Fresnoite

Formula:  Ba2TiSi2O8

Origin of name:  Locality; Fresno Co., California

 

Crystal system:  Tetragonal

Crystal class:  4mm

Twinning:

Unit cell:

 

Colour:  Lemon-yellow, canary-yellow

Diaphaneity:

Luster:  Vitreous

Habit:  Crystals elongated slightly, subhedral to euhedral, tiny, in aggregates

Hardness:  3 to 4

Specific gravity:  4.43

Cleavage:  1; {001} fair

Tenacity:

Streak:  White

 

Synonyms/varieties:

 

Comments:  Fluoresces yellow under SW

 

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