Claudetite

Formula:  As₂O₃

Origin of name:  For F. Claudet, French chemist

Crystal system:  Monoclinic

Crystal class:  2/m

Twinning:

Unit cell:

Colour:  Colourless to white

Diaphaneity:  Transparent

Luster:  Vitreous, pearly on cleavage

Habit:  Crystals tabular, thin plates; crusts

Hardness:  2.5

Specific gravity: 4.15

Cleavage:  1; {0101} perfect, micaceous

Tenacity:

Streak:

Synonyms/varieties:

Comments:  Dimorphous with arsenolite