Formula: Na3Mn3Ti2(Si2O7)2O2(F,OH)2
Origin of name: For Jan Haug, amateur Norwegian mineralogist
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: Reddish-brown
Diaphaneity:
Luster: Vitreous
Habit: Crystals prismatic, up to 4 mm
Hardness: 5
Specific gravity: 3.60
Cleavage: 1; {010} distinct
Tenacity:
Streak: Light brown
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 |