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Ferronyböite
Na3Fe2+3Al2(Si7AlO22)(OH)2

     Ferronyböite, a member of the amphiboles, has been recently at MSH.

PHYSICAL CHARACTERISTICS:

Color is usually blueish.
Luster is vitreous.
Diaphaneity is translucent.
Crystal System is monoclinic, C2/m.
Crystal Habits include (??).
Cleavage {110} is perfect.
Fracture is (??).
Hardness is ~ 5 - 6.
Specific Gravity is approximately ~ 3,11 g/cm3.
Streak is (??).
Associated Minerals include (??).
Distinguishing Features: brittle, pleochroism.
Origin: Named in 1997 for its ferrous content and its relationship to nyböite.

CLASSIFICATION:

Dana System
# 66.1.3c.11a

Strunz Classification
# VIII/F.08-65

REFERENCES:
pending

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
--

AP
--

MX
--

SS
--

MC
--

HF
--

BR
--

SX
--

FR
--

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