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Raite crystals - click for larger pic
Raite crystals
Marcelle Weber sp.
Photo by Violet Anderson
© Royal Ontario Museum

Raite crystals - click for larger pic
Raite crystals
Photo by Violet Anderson
© Royal Ontario Museum

Raite crystals - click for larger pic
Raite crystals
© Doug Merson

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Home > Mineral Descriptions > Raite - (5 Photos)



Raite
(Na,Ca)4(Mn,Ti,Fe)3Si8(O,OH)24 · 9H2O

     Raite is an extremely rare mineral at MSH.

PHYSICAL CHARACTERISTICS:

Color is usually reddish brown, red, violet and brown.
Luster is vitreous to silky.
Diaphaneity is transparent.
Crystal System is orthorhombic; C222.
Crystal Habits include thin acicular crystals to 0.2mm forming
   radiating aggregates to 2mm.
Cleavage {100}, {010} and {001} are perfect.
Fracture is (??).
Hardness is 3.
Specific Gravity is approximately 2.4 g/cm3.
Streak is yellow.
Associated Minerals include aegirine, albite, amphibole group,
   analcime, ancylite, epididymite, eudialyte, lueshite, lovozerite,
   natrolite, nenadkevichite, nepheline, sérandite, sodalite (hackmanite
   variety), sphalerite, steenstrupine, villiaumite and vuonnemite.
Distinguishing Features: Crystal habit.
Origin: Named in 1973 after the international group of scientists on
   the 1969-1970 voyage of the papyrus ship RA, captained by
   Thor Heyerdahl.

CLASSIFICATION:

Dana System
# 78.5.8.1

Strunz Classification
# VIII/F.24-30

REFERENCES:
MinRec 21:331 (1990), Dana 8:1711 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
¤¤

AP
--

MX
--

SS
--

MC
--

HF
--

BR
--

SX
¤¤

FR
--

Legend

Raite crystals - click for larger pic
Raite crystals
© Modris Baum

Raite crystals - click for larger pic
Raite crystals
© Stephan Wolfsried