Yttrotungstite-(Y)

Formula: YW2O6(OH)3

Origin of name: from yttrium and tungsten

 

Crystal system: Monoclinic

Crystal class: 2/m

Twinning:

Unit cell: a = 6.95, b = 8.64, c = 5.77, β = 104.93°

 

Colour: Yellowish, canary yellow, light yellow

Diaphaneity: 

Luster: Earthy

Habit: crystals lath-like, minute, irregular masses, earthy, encrustations

Hardness:  1

Specific gravity: 5.96

Cleavage: 2; transverse good, one longitudinal fair

Tenacity: 

Streak: Yellow white

 

Synonyms/varieties:

 

Comments: 

 

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