Khaidarkanite
Formula: Cu4Al3(OH)14F3 · 2H2O; Originally given as Na0.34Cu4Al3(OH)14F3 · 2H2O.
Species: Halides
Colour: Light blue or bright sky-blue
Lustre: Vitreous
Hardness: 2½
Specific Gravity: 2.84
Crystal System: Monoclinic
Member of Cyanotrichite group. Visually similar to cyanotrichite and carbonatecyantrichite.
Name: Named after the discovery locality.
Type Locality: Khaidarkan Sb-Hg deposit, Batken Region, Kyrgyzstan