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Mahnertite

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About MahnertiteHide

09222070015706848005069.jpg
Volker Mahnert
Formula:
NaCu3(AsO4)2Cl · 5H2O
Lustre:
Vitreous
Hardness:
2 - 3
Crystal System:
Tetragonal
Name:
Named after Volker Mahnert (3 December 1943, Innsbruck, Austria - 23 November 2018, Geneva, Switzerland), zoologist, Director of the Muséum d’Histoire Naturelle, Geneva, Switzerland.
Structurally related to Zdenekite and other members of the Lavendulan Group.



Classification of MahnertiteHide

Approved
Approval Year:
1994
First Published:
1996
8.DH.45

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
H : With large and medium-sized cations, (OH, etc.):RO4 < 1:1

Physical Properties of MahnertiteHide

Vitreous
Hardness:
2 - 3 on Mohs scale

Optical Data of MahnertiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.686 nε = 1.635
Max Birefringence:
δ = 0.051
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate

Chemical Properties of MahnertiteHide

Formula:
NaCu3(AsO4)2Cl · 5H2O
IMA Formula:
(Na,Ca,K)Cu3(AsO4)2Cl · 5H2O

Crystallography of MahnertiteHide

Crystal System:
Tetragonal
Class (H-M):
4/mmm (4/m 2/m 2/m) - Ditetragonal Dipyramidal
Space Group:
I4/mmm
Cell Parameters:
a = 10.037 Å, c = 23.739 Å
Ratio:
a:c = 1 : 2.365
Unit Cell V:
2391.5 ų
Z:
8
Morphology:
Thin tetragonal plates.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0007079MahnertitePushcharovsky D Y, Zubkova N V, Teat S J, Maclean E J, Sarp H (2004) Crystal structure of mahnertite European Journal of Mineralogy 16 687-69220040293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
11.90 Å(100)
9.29 Å(60)
7.131 Å(50)
5.043 Å(60)
4.641 Å(40)
3.098 Å(80)
3.061 Å(70)

Type Occurrence of MahnertiteHide

Reference:
Sarp, H. (1996) Mahnertite, (Na,Ca)Cu(AsO4)4Cl.5H2O, a new mineral from the Cap Garonne Mine, Var France. Archs. Sci. Genève: 49(2): 119-124

Synonyms of MahnertiteHide

Other Language Names for MahnertiteHide

German:Mahnertit
Spanish:Mahnertita

Relationship of Mahnertite to other SpeciesHide

Structurally related to group(s):

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Mahnertite associated with ZdenĕkiteNaPbCu5(AsO4)4Cl · 5H2O

Related Minerals - Nickel-Strunz GroupingHide

8.DH.05MinyuliteKAl2(PO4)2(OH,F) · 4H2OOrth. mm2 : Pba2
8.DH.10LeucophosphiteKFe3+2(PO4)2(OH) · 2H2OMon. 2/m : P21/b
8.DH.10Spheniscidite(NH4,K)(Fe3+,Al)2(PO4)2(OH) · 2H2OMon.
8.DH.10TinsleyiteKAl2(PO4)2(OH) · 2H2OMon.
8.DH.15Jahnsite-(CaMnFe){Ca}{Mn2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15Jahnsite-(CaMnMg){Ca}{Mn2+}{(Mg,Fe2+)2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15Jahnsite-(CaMnMn){Ca}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15KeckiteCaMn2+(Fe3+Mn2+)Fe3+2(PO4)4(OH)3 · 7H2OMon. 2/m : P2/b
8.DH.15Rittmannite{(Mn2+,Ca)}{Mn2+}{(Fe2+,Mn2+,Mg)2}{(Al,Fe3+)2}(PO4)4(OH)2 · 8H2OMon.
8.DH.15Whiteite-(CaFeMg){Ca}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2OMon. 2/m : P21/b
8.DH.15Whiteite-(CaMnMg){Ca}{Mn2+}{Mg2}{Al2}(PO4)4(OH)2 · 8H2OMon. 2/m
8.DH.15Whiteite-(MnFeMg){(Mn2+,Ca)}{(Fe2+,Mn2+)}{Mg2}{Al2}(PO4)4(OH)2 · 8H2OMon. 2/m : P21/b
8.DH.15Jahnsite-(MnMnMn){Mn2+}{Mn2+}{Mn2+2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon.
8.DH.15Kaluginite(Mn2+,Ca)MgFe3+(PO4)2(OH) · 4H2OOrth.
8.DH.15Jahnsite-(CaFeFe){Ca}{Fe2+}{Fe2+2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon.
8.DH.15Jahnsite-(NaFeMg)NaFe3+Mg2Fe3+2(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15Jahnsite-(NaMnMg){(Na,Ca)}{(Mn2+,Fe3+)}{(Mg,Fe3+)2}{Fe3+2}(PO4)4(OH)2 · 8H2OMon. 2/m : P2/b
8.DH.15Jahnsite-(CaMgMg){Ca}{Mg}{Mg2}{Fe3+2}(PO4)4(OH)2 · 8H2O
8.DH.20Manganosegelerite(Mn2+,Ca)(Mn2+,Fe2+,Mg)Fe3+(PO4)2(OH) · 4H2OOrth. mmm (2/m 2/m 2/m) : Pbca
8.DH.20OveriteCaMgAl(PO4)2(OH) · 4H2OOrth. mmm (2/m 2/m 2/m) : Pbca
8.DH.20SegeleriteCa2 Mg2 Fe3+2(PO4)4(OH)2 · 8H2OOrth. mmm (2/m 2/m 2/m) : Pcca
8.DH.20WilhelmvierlingiteCaMnFe3+(PO4)2(OH) · 2H2OOrth.
8.DH.20JuonniiteCaMgSc(PO4)2(OH) · 4H2OOrth.
8.DH.25CalcioferriteCa2Fe3+2(PO4)3(OH) · 7H2OMon. 2/m : B2/b
8.DH.25KingsmountiteCa3MnFeAl4(PO4)6(OH)4·12H2OTric. 1 : P1
8.DH.25MontgomeryiteCa4MgAl4(PO4)6(OH)4 · 12H2OMon. 2 : B2
8.DH.25ZodaciteCa4Mn2+Fe3+4(PO4)6(OH)4 · 12H2OMon.
8.DH.30ArseniosideriteCa2Fe3+3(AsO4)3O2 · 3H2OMon. 2/m : B2/b
8.DH.30KolfaniteCa2Fe3+3O2(AsO4)3 · 2H2OMon.
8.DH.30MitridatiteCa2Fe3+3(PO4)3O2 · 3H2OMon. 2/m : B2/b
8.DH.30PararobertsiteCa2Mn3+3(PO4)3O2 · 3H2OMon. 2/m : P21/b
8.DH.30RobertsiteCa2Mn3+3(PO4)3O2 · 3H2OMon. m : Bb
8.DH.30Sailaufite(Ca,Na,☐)2Mn3+3(AsO4)2(CO3)O2 · 3H2OMon.
8.DH.35MantienneiteKMg2Al2Ti(PO4)4(OH)3 · 15H2OOrth.
8.DH.35PaulkerriteK(Mg,Mn2+)2(Fe3+,Al,Ti,Mg)2Ti(PO4)4(OH)3 · 15H2OOrth. mmm (2/m 2/m 2/m) : Pbca
8.DH.35Benyacarite(H2O,K)2(Mn2+,Fe2+)2(Fe3+,Ti)2Ti(PO4)4(O,F)2 · 14H2OOrth. mmm (2/m 2/m 2/m) : Pbca
8.DH.40XanthoxeniteCa4Fe3+2(PO4)4(OH)2 · 3H2OTric. 1 : P1
8.DH.50AndyrobertsiteKCdCu5(AsO4)4(H2AsO4) · 2H2OMon.
8.DH.50CalcioandyrobertsiteKCaCu5(AsO4)4(H2AsO4) · 2H2OMon. 2/m : P21/m
8.DH.55EnglishiteK3Na2Ca10Al15(PO4)21(OH)7 · 26H2OMon. 2/m
8.DH.60BouazzeriteBi6(Mg,Co)11Fe3+14(AsO4)18(OH)4O12 · 86H2OMon. 2/m

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 MahnertiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Sarp, H. (1996) Mahnertite, (Na,Ca)Cu(AsO4)4Cl.5H2O, a new mineral from the Cap Garonne Mine, Var France. Archs. Sci. Genève: 49(2): 119-124 (in French, with English abstract).
Wendel, W. and Markl, G. (1999) Lavrion: Mineralogische Klassiker und Raritäten für Sammler. Lapis: 24(7): 34.
Rieck, B. (1999) Seltene Arsenate aus der Kamariza und weitere Neufunde aus Lavrion. Lapis: 24(7): 68.
Mineralogical Record: 28: 486.
Pushcharovsky, D. Yu., Zubkova, N.V., Teat, S.J., MacLean, E.J., and Sarp, H. (2004) Crystal structure of mahnertite. European Journal of Mineralogy: 16: 687-692.
Giester, Gerald; Uwe Kolitsch; Peter Leverett; Peter Turner; Peter A. Williams (2007) The crystal structures of lavendulan, sampleite, and a new polymorph of sampleite. European Journal of Mineralogy: 19: 75-93.

Internet Links for MahnertiteHide

Localities for MahnertiteHide

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.
Chile
 
  • Tarapacá
    • Iquique Province
      • Salar Grande
SEM-EDS by Joy Desor
France (TL)
 
  • Provence-Alpes-Côte d'Azur
    • Var
      • Le Pradet
H. Sarp: Archs. Sci. Genève 49(2):119-124 (1996)
Germany
 
  • Rhineland-Palatinate
    • Altenkirchen District
      • Kirchen
Joy Desor (SEM-EDS and Raman analyses)
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion mining district
          • Agios Konstantinos (Kamariza)
            • Mercati mines
Lapis, 24(7), 34 (1999); Lapis, 24(7), 68 (1999)
Lapis No.7/8 1999 p.70-74
Italy
 
  • Sardinia
    • South Sardinia Province
      • Gonnosfanadiga
Desor, J. (2017) SEM-EDS analysis on crystals
Caboni, F., Mamberti, M., Tanca G.A., Vinci, A., Bittarello, E., Marengo, A., Brizio, P., Bracco, R., Baralis, L., Desor, J., and Ciriotti, M.E. (2018) Arseniati, arseniuri e altre novità di Pira Inferida - Fenugu Sibiri, Gonnosfanadiga, Sud Sardegna. Micro, 16, 110-156.
USA
 
  • Utah
    • San Juan Co.
      • Red Canyon
Kampf, A.R., Plášil, J., Kasatkin, A.V., Marty, J., and Čejka, J. (2018) Markeyite, a new calcium uranyl carbonate mineral from the Markey mine, San Juan County, Utah, USA. Mineralogical Magazine, 82, 1089-1100.
 
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