Carlosruizite

Formula:  K₆(Na,K)₄Na₆Mg₁₀(SeO₄)₁₂(IO₃)₁₂ ^. 12H₂O

Origin of name:  For Carlos Ruiz, Chilean geologist

Crystal system:  Hexagonal

Crystal class:  -3

Twinning:    2/m

Unit cell:

Colour:  Colourless to pale yellow

Diaphaneity:  Transparent

Luster:  Vitreous

Habit:  Pseudo-rhombohedral thin hexagonal plates to 0.2 mm across bevelled at edges

Hardness:  2 to 3

Specific gravity:  3.40

Cleavage:  None

Tenacity:

Streak:

Synonyms/varieties:

Comments:  End member of series with fuenzalidaite; slowly soluble in H₂O