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Manganokukisvumite crystals - click for larger pic
Manganokukisvumite crystals
Reproduced courtesy of
© Canadian
Museum of Nature

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Home > Mineral Descriptions > Manganokukisvumite (TL) - (1 Photo)



Manganokukisvumite (Type Locality)
Na6MnTi4Si8O28 · 4H2O

     Manganokukisvumite, is the manganese analogue of kukisvumite. It was discovered in 1987 by Jerry van Velthuizen in albite-rich syenite breccia.

PHYSICAL CHARACTERISTICS:

Color is colourless.
Luster is vitreous.
Diaphaneity is transparent.
Crystal System is orthorhombic, Pccn.
Crystal Habits include extremely thin, flattened and sword-shaped
   to 0.5mm in length, frequently forming rosette-like radiating groups.
Cleavage none apparent.
Fracture is splintery.
Hardness is ~ 5.5 - 6.
Specific Gravity is ~ 2.86 g/cm3.
Streak is white.
Associated Minerals include aegirine, albite, annite, calcite, chalcopyrite,
   chlorite-group mineral, elpidite, fluorapatite, labuntsovite, magnetite,
   natrolite, pyrite, pyrrhotite and sodalite.
Distinguishing Features: Brittle.
Origin: Named in 2004 to reflect its composition; the manganese
   analogue of kukisvumite.

CLASSIFICATION:

Dana System
# 65.1.6.4

Strunz Classification
# VIII/C.03-58

REFERENCES:
CanMin 42:0781-0785 (2004)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
--

AP
--

MX
--

SS
¤¤

MC
--

HF
--

BR
--

SX
--

FR
--

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