Sidorenkite
Na₃Mn(PO₄)(CO₃)

     Sidorenkite is extremely rare at MSH.

PHYSICAL CHARACTERISTICS:

Color is usually colorless to pale pink, pale brown to reddish brown.
Luster is vitreous to pearly.
Diaphaneity is transparent to opaque.
Crystal System is monoclinic, P2₁/m.
Crystal Habits include globular grains and embedded rectangular
   crystal sections that are etched.
Cleavage {100} and {010} are perfect.
Fracture is (??).
Hardness is 2.
Specific Gravity is approximately 2.9 g/cm³.
Streak is white.
Associated Minerals include cancrinite, eudialyte, kogarkoite,
   lovozerite, rasvumite, sérandite, sodalite, terskite, tugtupite,
   ussingite, villiaumite and vuonnemite.
Distinguishing Features: Crystal habit.
Origin: Named in 1979 after Alexander Vail'evich Sidorenko
   (1917-1982), Russian.

CLASSIFICATION:

REFERENCES:
MinRec 21:338 (1990), Dana 8:958 (1997)

DISTRIBUTION AND RARITY AT MONT SAINT-HILAIRE:

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