Formula: Na0.8Ca0.4Cu0.4(Mg,Fe)3(AsO4)3
Origin of name: after locality Nickenich, Eifel, Germany
Crystal system: monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: blue
Diaphaneity:
Luster: vitreous
Habit: fibrous to long prismatic to 0.03 by 0.2 mm, radial or lamellar
Hardness: 3
Specific gravity: 4.06
Cleavage: 3; {010} perfect, {100} and {101} good
Tenacity:
Streak:
Synonyms/varieties:
Comments:
| Back to Alphabetical list | Colour photos | Thin sections | SEM images | TEM images | vibrational spectra description | IR spectra | Raman spectra | N-IR spectra | F-IR spectra | IES spectra |