Formula: NaFeS2 . 2H2O
Origin of name: For Richard Erd, American mineralogist
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: Copper-red
Diaphaneity:
Luster: Metallic
Habit: Minute, prismatic fibers in small clusters
Hardness:
Specific gravity: 2.30
Cleavage: 1; {110} good
Tenacity:
Streak: Black
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 |