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Normandite crystals - click for larger pic
Normandite crystal
© Doug Merson

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

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

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Home > Mineral Descriptions > Normandite (TL) - (3 Photos)



Normandite (Type Locality)
NaCa(Mn,Fe)(Ti,Nb,Zr)Si2O7OF

     Normandite, a member of the låvenite group, was originally found at MSH in 1980 and described in 1997. It was originally designated as UK #59.

PHYSICAL CHARACTERISTICS:

Color is usually orange to orange-brown, yellow in fine fibers.
Luster is vitreous.
Diaphaneity is translucent to transparent.
Crystal System is monoclinic; P21/a.
Crystal Habits include aggregates of acicular crystals to 10mm,
   patches of fibrous crystals and euhedral crystals to 10mm.
Cleavage {100} and {001} are distinct.
Fracture is conchoidal.
Hardness is 5 - 6.
Specific Gravity is approximately 3.5 g/cm3.
Streak is white to very pale yellow.
Associated Minerals include aegirine, albite, cancrinite, catapleiite,
   donnayite, eudialyte, kupletskite, microcline, natrolite, nepheline,
   rinkite and villiaumite.
Distinguishing Features: Crystal habit.
Origin: Named in 1997 after Charles Normand, Canadian amateur
   mineralogist who discovered the species.

CLASSIFICATION:

Dana System
# 56.2.6a.2

Strunz Classification
# VIII/C.11-15

REFERENCES:
CanMin 35:1035-1039 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
--

AP
--

MX
--

SS
--

MC
¤¤

HF
--

BR
--

SX
--

FR
--

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