Tuperssuatsiaite
Na_1-2Fe₃Si₈O₂₀(OH)₂ · 5H₂O

     Tuperssuatsiaite is a moderately rare species at MSH.

PHYSICAL CHARACTERISTICS:

Color is usually brown, yellow or pink.
Luster is vitreous.
Diaphaneity is transparent to translucent.
Crystal System is monoclinic, C2/m.
Crystal Habits include fibrous masses.
Cleavage {100} is good.
Fracture is conchoidal to uneven.
Hardness is (??).
Specific Gravity is approximately (?) g/cm³.
Streak is brownish yellow.
Associated Minerals include labuntsovite and leucosphenite.
Distinguishing Features: Crystal habit.
Origin: Named in 1985 after its discovery locality, at Tuperssuatsiat,
   Greenland.

CLASSIFICATION:

REFERENCES:
Dana 8:1559-1560 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

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