Formula: Mn5(AsO4)2(AsO3OH)2 . 10H2O
Origin of name: For Thomas Geiger, Swiss geologist
Crystal system: Triclinic
Crystal class: -1
Twinning:
Unit cell:
Colour: Rose-red
Diaphaneity:
Luster: Vitreous, pearly
Habit: Platy, partly triangular crystals to 0.5mm
Hardness: 3
Specific gravity: 3.05
Cleavage: 1; {010} perfect
Tenacity:
Streak: White
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 |