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Tsepinite-Na
(Na,H3O,K,Sr,Ba)2(Ti,Nb)2[Si4O12](OH,O) · 3H2O

     Tsepinite-Na is a new member of the labuntsovite-nenadkevichite recently identified on specimens collected back in 1981-1982 from the Horváath collection.

PHYSICAL CHARACTERISTICS:

Color is white.
Luster is vitreous.
Diaphaneity is opaque.
Crystal System is monoclinic; Cm.
Crystal Habits include short prismatic crystals to 4 mm.
Cleavage none.
Fracture uneven.
Hardness is 5.
Specific Gravity is approximately 2,74 g/cm3
Streak is white.
Associated Minerals include aegirine, catapleiite, natrolite, rhodochrosite
   and sérandite.
Other Properties brittle.
Origin described in 2001 after Anatoliy I. Tsepin (b. 1946), Russian microprobe analyst.

CLASSIFICATION:

Dana System
# 60.1.3b.2

Strunz Classification
# VIII/E.07-30

REFERENCES:
To follow

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

MSH
¤¤¤

PE
¤¤

AP
--

MX
--

SS
--

MC
--

HF
--

BR
--

SX
--

FR
--

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