Formula: K2ZrSi3O9 . H2O
Origin of name: For Ekaterina Kostyleva-Labuntsova, Russian mineralogist
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: Colourless
Diaphaneity: Transparent
Luster: Vitreous
Habit: Crystals elongated
Hardness: 5
Specific gravity: 2.74
Cleavage: 1; {110} perfect
Tenacity:
Streak:
Synonyms/varieties:
Comments: Dimorphous with umbite
| 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 |