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Manganonordite-(Ce)

A valid IMA mineral species
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About Manganonordite-(Ce)Hide

Formula:
Na3SrCeMn2+Si6O17
Colour:
Greyish-pink when fresh, black to brown or yellow when altered
Lustre:
Greasy
Hardness:
5 - 5½
Specific Gravity:
3.43
Crystal System:
Orthorhombic
Name:
Named as the Mn++ dominant analogue of nordite-(Ce). Nordite series is named after the word for north because of its northern origin in the Lovozero Massif.
The manganese analogue of Nordite-(Ce) and Ferronordite-(Ce).


Unique IdentifiersHide

Mindat ID:
7170
Long-form identifier:
mindat:1:1:7170:9
GUID
(UUID V4):
f0df62ea-a06c-422c-886d-3799b1ee73f5

IMA Classification of Manganonordite-(Ce)Hide

Classification of Manganonordite-(Ce)Hide

9.DO.15

9 : SILICATES (Germanates)
D : Inosilicates
O : Inosilicates with 7-, 8-, 10-, 12- and 14-periodic chains

Mineral SymbolsHide

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

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

Physical Properties of Manganonordite-(Ce)Hide

Greasy
Transparency:
Transparent
Comment:
Greasy on fractures
Colour:
Greyish-pink when fresh, black to brown or yellow when altered
Streak:
White
Hardness:
5 - 5½ on Mohs scale
Hardness:
VHN15=777 kg/mm2 - Vickers
Tenacity:
Brittle
Cleavage:
Perfect
Perfect on {100}, with two additional {h0l} cleavages.
Fracture:
Irregular/Uneven
Density:
3.43(3) g/cm3 (Measured)    3.51(1) g/cm3 (Calculated)

Optical Data of Manganonordite-(Ce)Hide

Type:
Biaxial (+)
RI values:
nα = 1.623(3) nβ = 1.636(2) nγ = 1.642(2)
2V:
Measured: 60° (10), Calculated: 68°
Max Birefringence:
δ = 0.019
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
weak
Optical Extinction:
X = a; Y = b; Z = c.

Chemistry of Manganonordite-(Ce)Hide

Mindat Formula:
Na3SrCeMn2+Si6O17

Crystallography of Manganonordite-(Ce)Hide

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pcca
Setting:
Pcca
Cell Parameters:
a = 14.44(2) Å, b = 5.187(5) Å, c = 19.82(1) Å
Ratio:
a:b:c = 2.784 : 1 : 3.821
Unit Cell V:
1,484.52 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Thin platy crystals, flattened. Main form is {100}.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.215 Å(100)
3.326 Å(67)
2.965 Å(83)
2.875 Å(55)
2.597 Å(54)

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 4b: Highly evolved igneous rocks>3.0
35 : Ultra-alkali and agpaitic igneous rocks

Type Occurrence of Manganonordite-(Ce)Hide

General Appearance of Type Material:
Rosette-like aggregates, up to 5-10 mm in diameter, consisting of tabular crystals.
Place of Conservation of Type Material:
A.E. Fersman Mineralogical Museum, Moscow, Russia.
Geological Setting of Type Material:
In an alkaline massif within nests and veinlets of pegmatoid ussingite-bearing rocks.
Associated Minerals at Type Locality:
Reference:
Pekov, I.V., N.V. Chukanov, N.N. Kononkova, D.I. Belakovsky, D.Yu. Pushcharovsky, and S.A. Vinogradova (1998) Ferronordite-(Ce) Na3SrFeSi6O17 and manganonordite-(Ce) Na3SrMnSi6O17 - new minerals from the Lovozero massif, Kola Peninsula. Zapiski Vseross. Mineral. Obshch., 127(1), 32-40 (in Russian, English abs.).

Synonyms of Manganonordite-(Ce)Hide

Other Language Names for Manganonordite-(Ce)Hide

Relationship of Manganonordite-(Ce) to other SpeciesHide

Other Members of this group:
Ferronordite-(Ce)Na3SrCeFe2+Si6O17Orth. mmm (2/m 2/m 2/m) : Pcca
Ferronordite-(La)Na3Sr(La,Ce)FeSi6O17Orth.
Illoqite-(Ce)Na2NaBaCeZnSi6O17Orth. mmm (2/m 2/m 2/m) : Pcca
Nordite-(Ce)(Ce,La)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17Orth. mmm (2/m 2/m 2/m) : Pcca
Nordite-(La)(La,Ce)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17Orth. mmm (2/m 2/m 2/m) : Pcca

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Manganonordite-(Ce) associated with Rhabdophane-(Ce)Ce(PO4) · 0.6H2O
2 photos of Manganonordite-(Ce) associated with UssingiteNa2AlSi3O8OH
1 photo of Manganonordite-(Ce) associated with Gerasimovskite(Mn,Ca)(Nb,Ti)5O12 · 9H2O
1 photo of Manganonordite-(Ce) associated with Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2O

Related Minerals - Strunz-mindat GroupingHide

9.DO.BraccoiteNaMn2+5[Si5As5+O17(OH)](OH)Tric. 1 : P1
9.DO.Illoqite-(Ce)Na2NaBaCeZnSi6O17Orth. mmm (2/m 2/m 2/m) : Pcca
9.DO.05Pyroxferroite(Fe,Mn,Ca)SiO3Tric.
9.DO.05PyroxmangiteMn2+SiO3Tric. 1 : P1
9.DO.10PellyiteBa2Ca(Fe,Mg)2Si6O17Orth. mmm (2/m 2/m 2/m)
9.DO.15Nordite-(Ce)(Ce,La)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17Orth. mmm (2/m 2/m 2/m) : Pcca
9.DO.15Nordite-(La)(La,Ce)(Sr,Ca)Na2(Na,Mn)(Zn,Mg)Si6O17Orth. mmm (2/m 2/m 2/m) : Pcca
9.DO.15Ferronordite-(Ce)Na3SrCeFe2+Si6O17Orth. mmm (2/m 2/m 2/m) : Pcca
9.DO.15Ferronordite-(La)Na3Sr(La,Ce)FeSi6O17Orth.
9.DO.15MeieraniteNa2Sr3MgSi6O17Orth.
9.DO.20AlamositePbSiO3Mon. 2/m : P2/m
9.DO.25LiebauiteCa3Cu5Si9O26Mon. 2/m : B2/b
9.DO.30VladykiniteNa3Sr4(Fe2+Fe3+)Si8O24 Mon. 2/m : P21/b

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 Manganonordite-(Ce)Hide

References for Manganonordite-(Ce)Hide

Localities for Manganonordite-(Ce)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.
Russia (TL)
 
  • Murmansk Oblast
    • Lovozersky District
      • Karnasurt Mountain
        • Second Eastern Stream
Pekov et al. (1998) +2 other references
Pekov et al. (1998) +2 other references
Yakovenchuk et al. (2011)
 
Mineral and/or Locality  
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