Formula: Na2Ca(Mn,Fe)7(PO4)6
Origin of name: For A. N. Fillow, American mine owner
Crystal system: Monoclinic
Crystal class: -3
Twinning:
Unit cell:
Colour: Yellowish to reddish brown
Diaphaneity: Transparent to translucent
Luster: Subresinous to greasy
Habit: Crystals pseudorhombohedral; massive, granular
Hardness: 4.5
Specific gravity: 3.43
Cleavage: 1; {001} 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 |