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Manganoarrojadite-(KNa)

A valid IMA mineral species
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Formula:
(KNa)(NaNa)Mn2+(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2
Colour:
olive green
Lustre:
Vitreous, Greasy
Hardness:
4½
Specific Gravity:
3.53 (Calculated)
Crystal System:
Monoclinic
Name:
Named according to the nomenclature for the arrojadite group (Chopin et al. 2006).
Unique combination of elements. Second group member with essential Mn, after dickinsonite-(KMnNa).


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Unique IdentifiersHide

Mindat ID:
54651
Long-form identifier:
mindat:1:1:54651:7
GUID
(UUID V4):
df785384-b617-49f7-a20b-d8eff7a0ab3a

IMA Classification of Manganoarrojadite-(KNa)Hide

IMA status:
Approved
IMA Formula:
KNa5MnFe13Al(PO4)11(PO3OH)(OH)2
Approval year:
2020

Classification of Manganoarrojadite-(KNa)Hide

Strunz-mindat (2024):
8.BF.

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
F : With medium-sized and large cations, (OH, etc.):RO4< 0.5:1

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
Majd-KNaIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of Manganoarrojadite-(KNa)Hide

Lustre:
Vitreous, Greasy
Colour:
olive green
Streak:
pale green
Hardness:
4½ on Mohs scale
Cleavage:
Distinct/Good
good in one direction - probably {001}
Fracture:
Irregular/Uneven, Step-Like
Density:
3.53 g/cm3 (Calculated)

Optical Data of Manganoarrojadite-(KNa)Hide

Type:
Biaxial (-)
RI values:
nα = 1.658(2) nβ = 1.666(2) nγ = 1.670(2)
2V:
Measured: 67° (1), Calculated: 70°
Max Birefringence:
δ = 0.012
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemistry of Manganoarrojadite-(KNa)Hide

Mindat Formula:
(KNa)(NaNa)Mn2+(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2
Elements listed:
Al, Fe, H, K, Mn, Na, O, P - search for minerals with similar chemistry

Crystallography of Manganoarrojadite-(KNa)Hide

Crystal System:
Monoclinic
Class (H-M):
m - Domatic
Space Group:
Bb
Setting:
Cc
Cell Parameters:
a = 16.5345(3) Å, b = 10.0406(2) Å, c = 24.6261(5) Å
β = 105.891(2)°
Ratio:
a:b:c = 1.647 : 1 : 2.453
Unit Cell V:
3,932.10 ų (Calculated from Unit Cell)
Z:
4

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
5.902 Å(24)
5.025 Å(24)
3.401 Å(21)
3.208 Å(47)
3.048 Å(100)
2.853 Å(20)
2.758 Å(24)
2.704 Å(70)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
34 : Complex granite pegmatites

Type Occurrence of Manganoarrojadite-(KNa)Hide

Type Locality:
ⓘ Palermo No. 1 Mine, Groton, Grafton County, New Hampshire, USA
General Appearance of Type Material:
anhedral grains up to 1 x 1.5 cm in size
Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the Canadian Museum of Nature, 240 McLeod Street, Ottawa, Ontario K2P 2R1, Canada, catalogue number CMNMC 47194
Geological Setting of Type Material:
phosphate-bearing granite pegmatite
Associated Minerals at Type Locality:
VivianiteGoyaziteQuartzCalcite

Synonyms of Manganoarrojadite-(KNa)Hide

Relationship of Manganoarrojadite-(KNa) to other SpeciesHide

Member of:
Arrojadite Group
Other Members of this group:
Arrojadite-(BaNa)(Ba◻)(NaNa)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2Mon. 2/m : B2/b
Arrojadite-(KFe)(KNa)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2Mon. m : Bb
Arrojadite-(KFeNa)(KNa)(Fe2+◻)Ca(Na2Na)Fe2+13Al(PO4)11(PO4)(OH)2
Arrojadite-(KNa)(KNa)(NaNa)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2Mon. m : Bb
Arrojadite-(NaFe)(NaNa)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2
Arrojadite-(PbFe)(Pb◻)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2Mon. m : Bb
Arrojadite-(SrFe)(Sr◻)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2Mon. m : Bb
Dickinsonite-(KMnNa)(KNa)(Mn2+◻)Ca(Na2Na)Mn2+13Al(PO4)11(PO4)(OH)2Mon. 2/m : B2/b
Ferri-arrojadite-(BaNa)(Ba◻)(NaNa)Ca(Na2◻)Fe2+13Fe3+(PO4)11(PO3OH)(OH)2
Fluorarrojadite-(BaFe)(Ba◻)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)F2Mon. m : Bb
Fluorarrojadite-(BaNa)(Ba◻)(NaNa)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)F2Mon. m : Bb
Fluorarrojadite-(KNa)(KNa)(NaNa)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)F2
Fluorarrojadite-(NaFe)(NaNa)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)F2
Fluorcarmoite-(BaNa)(Ba◻)(NaNa)Ca(Na2◻)Mg13Al(PO4)11(PO3OH)F2Mon. m : Bb
Sigismundite(Ba◻)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2Mon. m : Bb

Related Minerals - Strunz-mindat GroupingHide

8.BF.Sigismundite(Ba◻)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2Mon. m : Bb
8.BF.05Arrojadite-(KFe)(KNa)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2Mon. m : Bb
8.BF.05Dickinsonite-(KMnNa)(KNa)(Mn2+◻)Ca(Na2Na)Mn2+13Al(PO4)11(PO4)(OH)2Mon. 2/m : B2/b
8.BF.05Arrojadite-(SrFe)(Sr◻)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2Mon. m : Bb
8.BF.05Arrojadite-(KNa)(KNa)(NaNa)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2Mon. m : Bb
8.BF.05Arrojadite-(PbFe)(Pb◻)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2Mon. m : Bb
8.BF.05Fluorarrojadite-(BaFe)(Ba◻)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)F2Mon. m : Bb
8.BF.05Arrojadite-(KFeNa)(KNa)(Fe2+◻)Ca(Na2Na)Fe2+13Al(PO4)11(PO4)(OH)2
8.BF.05Arrojadite-(NaFe)(NaNa)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2
8.BF.05Arrojadite-(BaNa)(Ba◻)(NaNa)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)(OH)2Mon. 2/m : B2/b
8.BF.05Ferri-arrojadite-(BaNa)(Ba◻)(NaNa)Ca(Na2◻)Fe2+13Fe3+(PO4)11(PO3OH)(OH)2
8.BF.05Fluorarrojadite-(KNa)(KNa)(NaNa)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)F2
8.BF.05Fluorarrojadite-(NaFe)(NaNa)(Fe2+◻)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)F2
8.BF.05Fluorcarmoite-(BaNa)(Ba◻)(NaNa)Ca(Na2◻)Mg13Al(PO4)11(PO3OH)F2Mon. m : Bb
8.BF.05Unnamed (Ba-dominant member of dickinsonite group)
8.BF.05Unnamed (Pb-dominant member of dickinsonite group)
8.BF.05Fluorarrojadite-(BaNa)(Ba◻)(NaNa)Ca(Na2◻)Fe2+13Al(PO4)11(PO3OH)F2Mon. m : Bb
8.BF.10Samuelsonite(Ca,Ba)Ca8Fe2+2Mn2+2Al2(PO4)10(OH)2Mon. 2/m : B2/m
8.BF.15GriphiteNa4Li2Ca6(Mn2+,Fe2+,Mg)19Al8(PO4)24(F,OH)8Iso. m3 (2/m 3) : Pa3
8.BF.20NabiasiteBaMn9(VO4)6(OH)2Iso. m3 (2/m 3) : Pa3
8.BF.25StarovaiteKCu5O(VO4)3 Tric. 1 : P1
8.BF.30Achyrophanite(K,Na)3(Fe3+,Ti,Al,Mg)5O2(AsO4)5Orth. 2 2 2 : P2 2 21
8.BF.35CryptochalciteK2Cu5O(SO4)5Tric. 1 : P1
8.BF.35CesiodymiteCsKCu5O(SO4)5Tric. 1 : P1

Fluorescence of Manganoarrojadite-(KNa)Hide

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.

Internet Links for Manganoarrojadite-(KNa)Hide

References for Manganoarrojadite-(KNa)Hide

Localities for Manganoarrojadite-(KNa)Hide

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 references and 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 (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
USA (TL)
 
  • New Hampshire
    • Grafton County
      • Groton
Miyawaki et al. (2020) +1 other reference
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