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Maneckiite

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Formula:
(Na◻)Ca2Fe22+(Fe3+Mg)Mn2(PO4)6 · 2H2O
System:
Orthorhombic
Colour:
dark brown
Lustre:
Vitreous
Hardness:
5
Member of:
Name:
after prof. Andrzej Manecki (born 1933 in Cracow, Poland), which work is connected with the AGH University of Science and Technology, a member (Polish representative) of the Cosmomineralogy Commision of the IMA (1974–1988), also the Polish representative in the IMA Comission on New Minerals and Mineral Names in 1988
The M(3)Mn analogue of wicksite. The element combination (in terms of element dominance) is only shared with 'Mg-Fillowite'.


Classification of Maneckiite

Approved, Pending publication
Approval Year:
2015

Physical Properties of Maneckiite

Vitreous
Diaphaneity (Transparency):
Transparent
Colour:
dark brown
Hardness (Mohs):
5
Comment:
ca. 5
Tenacity:
Brittle
Cleavage:
Distinct/Good
{010}
Fracture:
Splintery
Density:
3.531 g/cm3 (Calculated)

Optical Data of Maneckiite

Type:
Biaxial (+)
RI values:
nα = 1.698(2) nβ = 1.706(2) nγ = 1.727(2)
2V:
Measured: 65.9° , Calculated: 64°
Birefringence:
~0.03
Max Birefringence:
δ = 0.029
Image shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
obscured by the dark colour
Pleochroism:
Visible
Comments:
dark green (α), dark blue/green (β), light brown/tan (γ)
Comments:
orientation: X||a, Y||b, Z||c

Chemical Properties of Maneckiite

Formula:
(Na◻)Ca2Fe22+(Fe3+Mg)Mn2(PO4)6 · 2H2O
Elements listed in formula:

Crystallography of Maneckiite

Crystal System:
Orthorhombic
Class (H-M):
mmm (2/m 2/m 2/m) - Dipyramidal
Space Group:
Pbca
Cell Parameters:
a = 12.526(4) Å, b = 12.914(5) Å, c = 11.664(4) Å
Ratio:
a:b:c = 0.97 : 1 : 0.903
Unit Cell Volume:
V 1886.8 ų
Z:
4
Comment:
Pcab
X-Ray Powder Diffraction Data:
d-spacingIntensity
3.020(68)
2.942(29)
2.916(78)
2.869(31)
2.844(35)
2.825(30)
2.759(100)
2.121(30)

Type Occurrence of Maneckiite

General Appearance of Type Material:
subhedral or anhedral crystals, ca. 150 × 150 μm
Place of Conservation of Type Material:
Cotype material is deposited in the collections of the Mineralogical Museum, University of Wrocław, Cybulskiego 30, 50-205 Wrocław, Poland, catalogue number MMWr IV7674 and MMWr IV7676.
Geological Setting of Type Material:
outer zone of phosphate nodules in a pegmatite; results from Na- and Ca-metasomatism from a high-temperature fluid with parallel presence of Al ions coming from an aluminosilicate melt occurring in the vicinity
Associated Minerals at Type Locality:

Relationship of Maneckiite to other Species

Member of:
Other Members of Group:
BederiteCa2(Mn2+)4(Fe3+)2(PO4)6 · 2H2O
GrischuniteNaCa2Mn52+Fe3+(AsO4)6 · 2H2O
Tassieite(Na,◻)Ca2(Mg,Fe2+,Fe3+)2(Fe2+,Mg)2(Fe3+,Mg)2(PO4)6 · 2H2O
WicksiteNaCa2(Fe2+,Mn2+)4MgFe3+(PO4)6 · 2H2O

Other Names for Maneckiite

Name in Other Languages:

Other Information

Other Information:
Gladstone-Dale index: 0.027 ("excellent")
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Pronounciation of Maneckiite

Pronounciation:
PlayRecorded byFrom
Łukasz KruszewskiPoland

References for Maneckiite

Reference List:
Pieczka, A., Hawthorne, F.C., Gołębiowska, B. and Włodek, A. (2015) Maneckiite, IMA 2015-056. CNMNC Newsletter No. 27, October 2015, page 1227; Mineralogical Magazine: 79: 1229–1236.

Pieczka, A., Hawthorne, F.C., Gołębiowska, B., Włodek, A., Grochowina, A. (2016): Maneckiite, ideally NaCa2Fe2+2(Fe3+Mg)Mn2(PO4)6(H2O)2, a new phosphate mineral of the wicksite supergroup from the Michałkowa pegmatite, Góry Sowie block, southwestern Poland. Mineralogical Magazine: 80: (in press); http://forum.amiminerals.it/viewtopic.php?f=5&t=12848 (2016)

Internet Links for Maneckiite

mindat.org URL:
https://www.mindat.org/min-46818.html
Please feel free to link to this page.

Localities for Maneckiite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Poland (TL)
 
  • Lower Silesia (Dolnośląskie)
    • Sudetes Mts
      • Sowie Mts
        • Michałkowa (Michelsdorf)
Pieczka, A., Hawthorne, F.C., Gołębiowska, B. and Włodek, A. (2015) Maneckiite, IMA 2015-056. CNMNC Newsletter No. 27, October 2015, page 1227; Mineralogical Magazine, 79, 1229–1236.; Pieczka, A., Hawthorne, F.C., Gołębiowska, B., Włodek, A., Grochowina, A. (2016): Maneckiite, ideally NaCa2Fe2+2(Fe3+Mg)Mn2(PO4)6(H2O)2, a new phosphate mineral of the wicksite supergroup from the Michałkowa pegmatite, Góry Sowie block, southwestern Poland. Mineralogical Magazine: 80: (in press
Mineral and/or Locality  
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