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Ferroalluaudite-NaNa

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Formula:
Na4Na4Fe2+4Fe3+8(PO4)12
Colour:
Greenish black
Lustre:
Sub-Vitreous, Resinous, Greasy
Hardness:
5
Specific Gravity:
3.5
Crystal System:
Monoclinic
Name:
The original alluaudite from the type locality did not contain appreciable ferrous iron and was originally defined more or less as it is in the present day, but for new knowledge about mineral chemistry, crystal structure, etc. In 1937, Percy Quensel unsuccessfully introduced mangan-alluaudite to supersede simple alluaudite and then used alluaudite to accommodate ferrous iron-bearing material. Ferroalluaudite-NaNa was introduced by Paul B. Moore and Jun Ito (1979) for its chemical and structural relationship to the Alluaudite Group.
This page provides mineralogical data about Ferroalluaudite-NaNa.


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Physical Properties of Ferroalluaudite-NaNaHide

Sub-Vitreous, Resinous, Greasy
Transparency:
Translucent
Colour:
Greenish black
Hardness:
Tenacity:
Brittle
Cleavage:
Distinct/Good
{010}, {001}
Fracture:
Irregular/Uneven
Density:
3.5 g/cm3 (Measured)    3.61 g/cm3 (Calculated)
Comment:
Am Min 50:713 (1965)

Optical Data of Ferroalluaudite-NaNaHide

Type:
Biaxial (+)
RI values:
nα = 1.718 nγ = 1.731
Birefringence:
0.013
Max Birefringence:
δ = 0.013
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Pleochroism:
Strong
Comments:
X = tan, Z = Blue green

Chemical Properties of Ferroalluaudite-NaNaHide

Formula:
Na4Na4Fe2+4Fe3+8(PO4)12

Crystallography of Ferroalluaudite-NaNaHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Setting:
C2/m
Cell Parameters:
a = 11.87 Å, b = 12.54 Å, c = 6.46 Å
β = 114.6°
Ratio:
a:b:c = 0.947 : 1 : 0.515
Unit Cell V:
874.29 ų (Calculated from Unit Cell)
Z:
4
Comment:
I21/a has been proposed. Am Min 50:713

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
6.28 (70)
5.45 (20)
4.11 (20)
3.49 (30)
3.08 (50)
2.72 (100)
2.53 (30)
2.09 (20)
Comments:
ICDD 39-337, see also 6-492.

Relationship of Ferroalluaudite-NaNa to other SpeciesHide

Other Members of this group:
Alluaudite(Na,Ca)Mn2+(Fe3+,Mn2+,Fe2+,Mg)2(PO4)3Mon.
Alluaudite-Ca□4Ca4Mn2+4Fe3+8(PO4)12Mon. 2/m : B2/b
Alluaudite-Na□4Na4Mn2+4Fe3+8(PO4)12Mon. 2/m : B2/b
Arseniopleite(Ca,Na)NaMn2+(Mn2+,Mg,Fe2+)2(AsO4)3Mon. 2/m : P2/b
BadaloviteNa2Mg2Fe(AsO4)3Mon. 2/m : B2/b
BradaczekiteNaCu4(AsO4)3Mon. 2/m : B2/b
CalciojohilleriteNaCaMg3(AsO4)3Mon. 2/m : B2/b
CamanchacaiteNaCaMg2[AsO4][AsO3(OH)]2Mon. 2/m : B2/b
CanutiteNaMn3[AsO4][AsO3(OH)]2Mon. 2/m : B2/b
Caryinite(Na,Pb)(Ca,Na)CaMn2+2(AsO4)3Mon. 2/m
ErikapohliteCu3(Zn,Cu,Mg)4Ca2(AsO4)6·2H2O Mon. 2/m : B2/m
Ferroalluaudite(Na,Ca)Fe2+(Fe3+,Mn2+,Fe2+)2(PO4)3
FerrohagendorfiteNaCaFe2+Fe2+2(PO4)3Mon.
GroatiteNaCaMn2(PO4)(HPO4)2Mon. 2/m : B2/b
HagendorfiteNaCaMn2+Fe2+2(PO4)3Mon. 2/m : B2/b
Hagendorfite-(Na)(Na)Fe2+Mn2+(PO4)-(Na)(Na)Mon. 2/m : B2/b
HatertiteNa2(Ca,Na)(Fe3+,Cu)2(AsO4)3Mon. 2/m : B2/b
JohilleriteNa(Mg,Zn)3Cu(AsO4)3Mon. 2/m : B2/b
KeyiteCu2+3Zn4Cd2(AsO4)6 · 2H2OMon. 2/m
KhrenoviteNa3Fe3+2(AsO4)3Mon. 2/m : B2/b
Maghagendorfite(□,Na,)(Na,Ca,Fe2+)Mn(Mg,Fe2+,Fe3+)3(PO4)3Mon.
MagnesiocanutiteNaMnMg2[AsO4]2[AsO2(OH)2]Mon. 2/m : B2/b
Magnesiohatertite(Na,Ca)2Ca(Mg,Fe3+)2(AsO4)3Mon. 2/m : B2/b
ManitobaiteNa16Mn2+ 25Al8(PO4)30Mon. m : Pb
NickenichiteNa0.8Ca0.4Cu0.4(Mg,Fe)3(AsO4)3Mon. 2/m : B2/b
O'DanieliteNa(Zn,Mg)3H2(AsO4)3Mon. 2/m : B2/b
ParaberzeliiteNaCa2Mg2(AsO4)3Mon. 2/m : B2/b
VaruliteNaCaMn2+Mn2+2(PO4)3Mon. 2/m : B2/b
YazganiteNaFe3+2(Mg,Mn2+)(AsO4)3 · H2OMon. 2/m : B2/b
ZhanghuifeniteNa3Mn4Mg2Al(PO4)6Mon. 2/m
ZincobradaczekiteNaZn2Cu2(AsO4)3Mon. 2/m : B2/b

Fluorescence of Ferroalluaudite-NaNaHide

Not fluorescent.

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Ferroalluaudite-NaNaHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Moore, P.B. and Ito, J. (1979) Mineralogical Magazine: 43: 227-235.

Internet Links for Ferroalluaudite-NaNaHide

Localities for Ferroalluaudite-NaNaHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Canada
 
  • Yukon
    • Dawson mining district
Moore and Ito, 1971, Mineralogical Magazine 43:227
Morocco
 
  • Drâa-Tafilalet Region
    • Ouarzazate Province
      • Tazenakht
Moore and Ito, 1971, Mineralogical Magazine 43:227
Sweden
 
  • Stockholm County
    • Nynäshamn
      • Norrö
Moore and Ito, 1971, Mineralogical Magazine 43:227
 
Mineral and/or Locality  
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