Formula: Ba(Ca,Y,Na,K)(CO3)2
Origin of name: For Paul Ewald, German-American physicist
Crystal system: Hexagonal
Crystal class: 6mm
Twinning:
Unit cell:
Colour: Bluish-green
Diaphaneity:
Luster:
Habit: Hemimorphic polycrystals, tiny
Hardness:
Specific gravity: 3.25
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments: Polymorphous with Mckelveyite
| 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 |