Sections
Thumbnails

Tundrite-(Ce) crystals - click for larger pic
Tundrite-(Ce) crystals
© Doug Merson

Tundrite-(Ce) crystals - click for larger pic
Tundrite-(Ce) crystals
© Gilles Haineault

Search this site

Powered by FreeFind

Home > Mineral Descriptions > Tundrite-(Ce) - (3 Photos)



Tundrite-(Ce)
Na3Ce4(Ti,Nb)2(CO3)3(SiO4)2O4(OH) · 2H2O

     Tundrite-(Ce) occurs rarely at Mont Saint-Hilaire.

PHYSICAL CHARACTERISTICS:

Color ranges from lemon-yellow to orange-yellow with a bronzy
   appearance.
Luster is vitreous and silky to dull.
Diaphaneity is transparent to translucent.
Crystal System is triclinic; P1.
Crystal Habits include sharp bladed crystals to 1.5cm forming
   divergent sprays.
Cleavage {010} is perfect.
Fracture is splintery.
Hardness is 3.
Specific Gravity is approximately 3.7 g/cm3.
Streak is yellowish-gray.
Associated Minerals include aegirine, amphibole group, analcime,
   astrophyllite, calcite, cerite, fluorapatite, microcline, pectolite, pyrite,
   rhodochrosite and sphalerite.
Distinguishing Features: Crystal habit and color.
Origin: Named in 1963 after the discovery locality, the Lovozero tundra.

CLASSIFICATION:

Dana System
# 17.1.11.1

Strunz Classification
# VIII/B.16-40

REFERENCES:
MinRec 21:343 (1990), Dana 8:523 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
¤¤

AP
--

MX
¤¤

SS
--

MC
--

HF
--

BR
--

SX
--

FR
--

Legend

Tundrite-(Ce) crystals - click for larger pic
Tundrite-(Ce) crystals
© Doug Merson