Römerite
Fe₃(SO₄)₄ · 14 H₂O

     For the last update of 2006 (29 Dec '06), we now include römerite, a new sulfate for mont Saint-Hilaire. More information to follow. It usually displays pleochroism; X, reddish yellow; Y, pale yellow and Z, yellow brown.

PHYSICAL CHARACTERISTICS:

Color is usually brown, yellow or violet brown.
Luster is vitreous to resinous.
Diaphaneity is translucent.
Crystal System is triclinic; P1.
Crystal Habits include (??).
Cleavage: [010] is perfect and [001] is good .
Fracture is uneven.
Hardness is 3 - 3½.
Specific Gravity is approximately 2.15 g/cm³.
Streak is (??).
Associated Minerals include (??).
Distinguishing Features: Pleochroism.
Origin: Named in 1858 for Friedrich Adolph Römer, German geologist.

CLASSIFICATION:

REFERENCES:
Dana 8:615 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

Legend