Iqiqueite

Formula:  K₃Na₄Mg(CrO₄)B₂₄O₃₉(OH) ^. 12H₂O

Origin of name:  From locality; Iquique, Chile

Crystal system:  Hexagonal

Crystal class:  3m

Twinning: 

Unit cell: 

Colour:  Yellow

Diaphaneity: 

Luster:  Vitreous

Habit:  Platelets 5-50 µm across, singles and vermiform aggregates

Hardness:  ~ 2

Specific gravity:  2.05

Cleavage:  2; {0001} perfect, {10-10} imperfect

Tenacity: 

Streak: 

Synonyms/varieties:

Comments:  slowly soluble in cold water