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Hagendorfite-NaNa
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About Hagendorfite-NaNa
Formula:
NaNaFe2+(Mn2+,Mn3+)(PO4)3 (?)
Colour:
Greenish Black
Lustre:
Sub-Adamantine
Hardness:
5 - 6
Crystal System:
Monoclinic
Member of:
Name:
Originally published as a re-definition of hühnerkobelite (Moore, 1965). Renamed hagendorfite-NaNa by Moore and Ito (1979) for a member of the Alluaudite Group with the formula (M(2)4(M(1)4X(1)4X(2)4(PO4)-[_][_] where the dominant cation occupancies are: M(2) = Fe#2+#, M(1) = Mn#2+#, X(2) = Na, and X(1) = Na. Moore and Ito (1979) stated: "The proposed nomenclature of the alluaudites and the wyllieites was brought before the Commission on New Minerals and new Mineral Names (IMA)." Several species of the alluadite/wyllieite group have followed the proposed notation, but the proposal has not been adopted to date (2017).
First Recorded Locality:
Isostructural with:
Brilliant black stout crystals.
Unique Identifiers
Mindat ID:
31866
Long-form identifier:
mindat:1:1:31866:8
IMA Classification of Hagendorfite-NaNa
IMA status notes:
Pending approval
First published:
1965
Approval history:
Submitted in 1979. No action to date.
Palermo No. 1 Mine, Groton, Grafton County, New Hampshire, USA