Rinkite
Na(Na,Ca)2(Ca,Ce)4(Ti,Nb)(Si2O7)2(O,F)2
Rinkite is quite rare at Mont Saint-Hilaire. It is one of the earliest minerals to form in the paragenesis sequence.
PHYSICAL CHARACTERISTICS:
Color is usually yellow, yellowish green or brown.
Luster is vitreous.
Diaphaneity is transparent to translucent.
Crystal System is triclinic; P21.
Crystal Habits include prismatic and tabular crystals.
Cleavage {100} is good.
Fracture is not apparent.
Hardness is 5.
Specific Gravity is approximately 3.5 g/cm3.
Streak is yellow-white.
Associated Minerals include (??).
Distinguishing Features: (??).
Origin: Named for H. Rink, director of a Danish-Greenlandic trade group.
CLASSIFICATION:
Dana System
# 56.2.5.5
Strunz Classification
# VIII/C.12-25
REFERENCES:
MinRec 21:313 (1990), Dana 8:1168-1169 (1997)
DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:
MSH
¤¤¤
PE
¤¤
AP
¤¤
MX
--
SS
--
MC
¤¤
HF
--
BR
--
SX
¤¤
FR
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