General Information:
Chemical Formula:Na(Ca,Mn++)Al(PO4)(F,OH)3
Composition:(Molecular Weight = 241.11 gm)Sodium 9.53 %
NaCalcium 14.96 %
CaManganese 2.28 %
MnAluminum 11.19 %
AlPhosphorus 12.85 %
P Hydrogen 0.50 %
H Oxygen 34.51 %
O Fluorine 14.18 %
F Empirical Formula: NaCa0.9Mn2+0.1Al(PO4)F1.8(OH)1.2
Environment:In cavities of a silicocarbonate sill found as inclusions in esosphorite.
IMA Status:Approved IMA 1981
Locality:Viitaniemi granite pegmatite, Erajarvi, Orivesi, Finland.
Name Origin:Named for the locality.
Physical Properties: Cleavage:[101] Distinct
Color:colorless, gray, gray white, or white.
Density:3.06 - 3.245, Average = 3.15
Habits:Inclusions - Generally found as inclusions in other minerals., ,
Hardness:5 - Apatite
Luminescence:Non-fluorescent.
Luster:Vitreous (Glassy)
Streak:white
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