Christelite

Formula:  Zn₃Cu₂(SO₄)₂(OH)₆ ^. 4H₂O

Origin of name:  For Christel Gebhard-Giesen, discoverer of mineral

Crystal system:  Triclinic

Crystal class:  -1

Twinning:

Unit cell:

Colour:  Greenish blue

Diaphaneity:  Transparent

Luster:  Vitreous

Habit:  As thin crystals to 4 x 13 mm

Hardness:

Specific gravity:  3.14

Cleavage:  1; {001} perfect

Tenacity:

Streak:

Synonyms/varieties:

Comments:  Soluble in HCl and HNO₃