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Pieczkaite

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Formula:
Mn5(PO4)3Cl
Colour:
Grey
Hardness:
4 - 5
Specific Gravity:
3.783 (Calculated)
Crystal System:
Hexagonal
Name:
After Adam Pieczka (born September 8, 1957, at Wilamowice near Bielsko-Biała, Silesia Province, Poland), Assistant Professor in the Department of Mineralogy, Petrography, and Geochemistry, Faculty of Geology, Geophysics, and Environmental Protection, Kraków, Poland, for his extensive contributions to the crystal chemistry of pegmatite minerals.
Isostructural with:
This page provides mineralogical data about Pieczkaite.


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Classification of PieczkaiteHide

Approved
Approval Year:
2014

Pronounciation of PieczkaiteHide

Pronounciation:
PlayRecorded byCountry
Łukasz KruszewskiPoland

Physical Properties of PieczkaiteHide

Colour:
Grey
Streak:
Grayish-white
Hardness:
4 - 5 on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Parting:
None observed
Fracture:
Irregular/Uneven
Density:
3.783 g/cm3 (Calculated)

Optical Data of PieczkaiteHide

Type:
Uniaxial (-)
RI values:
nω = 1.694 - 1.698 nε = 1.690 - 1.694
Max Birefringence:
δ = 0.004
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High

Chemical Properties of PieczkaiteHide

Formula:
Mn5(PO4)3Cl

Crystallography of PieczkaiteHide

Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P63/m
Setting:
P63/m
Cell Parameters:
a = 9.504(4) Å, c = 6.347(3) Å
Ratio:
a:c = 1 : 0.668
Unit Cell V:
496.5 ų
Z:
2
Morphology:
Narrow veins to ~25 μm in apatite.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.453(15)
3.174(24)
2.794(100)
2.744(88)
2.639(34)
2.514(25)
1.853(25)
1.750(22)
Comments:
From Type Description.

Type Occurrence of PieczkaiteHide

General Appearance of Type Material:
As small patches and narrow veins in large crystals of apatite and (Mn,Cl)-bearing apatite in phosphate pods in the quartz core of a granitic pegmatite.
Place of Conservation of Type Material:
Type material is deposited in the collections of the Department of Natural History (Mineralogy), Royal Ontario Museum, 100 Queens Park, Toronto, Ontario M5S 2C6, Canada, catalogue number M56483
Geological Setting of Type Material:
Granite pegmatite
Associated Minerals at Type Locality:

Synonyms of PieczkaiteHide

Other Language Names for PieczkaiteHide

Relationship of Pieczkaite to other SpeciesHide

Other Members of this group:
AlforsiteBa5(PO4)3ClHex. 6/m : P63/m
ChlorapatiteCa5(PO4)3ClHex. 6/m : P63/m
FluorapatiteCa5(PO4)3FHex. 6/m : P63/m
HydroxylapatiteCa5(PO4)3(OH)Hex. 6/m : P63/m
HydroxylpyromorphitePb5(PO4)3(OH)
JohnbaumiteCa5(AsO4)3OHHex. 6/m : P63/m
MimetitePb5(AsO4)3ClHex. 6/m : P63/m
OxypyromorphitePb10(PO4)6O
PyromorphitePb5(PO4)3ClHex. 6/m : P63/m
StronadelphiteSr5(PO4)3FHex. 6/m : P63/m
SvabiteCa5(AsO4)3FHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
TurneaureiteCa5(AsO4)3ClHex.
Unnamed (F-analogue of Pyromorphite)Pb5(PO4)3F
Unnamed (OH-analogue of Mimetite)Pb5(AsO4)3(OH)
VanadinitePb5(VO4)3ClHex. 6/m : P63/m

Fluorescence of PieczkaiteHide

Does not fluoresce under ultraviolet light

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 PieczkaiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Tait, K., Hawthorne, F.C., Ball, N. and Abdu, Y. (2014) Pieczkaite, IMA 2014-005. CNMNC Newsletter No. 20, June 2014, page 555; Mineralogical Magazine, 78, 549-558.
Tait, K., Ball, N.A. and Hawthorne, F. (2015): Pieczkaite, ideally Mn5(PO4)3Cl, a new apatite-supergroup mineral from Cross Lake, Manitoba, Canada: Description and crystal structure. American Mineralogist, 100, 1047-1052

Internet Links for PieczkaiteHide

Localities for PieczkaiteHide

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 (TL)
 
  • Manitoba
    • Cross Lake
      • North Group
Tait, K., Hawthorne, F.C., Ball, N. and Abdu, Y. (2014) Pieczkaite, IMA 2014-005. CNMNC Newsletter No. 20, June 2014, page 555; Mineralogical Magazine, 78, 549-558. ; Tait, K., Ball, N.A. and Hawthorne, F. (2015): Pieczkaite, ideally Mn5(PO4)3Cl, a new apatite-supergroup mineral from Cross Lake, Manitoba, Canada: Description and crystal structure. American Mineralogist, 100, 1047-1052
Poland
 
  • Lower Silesia (Dolnośląskie)
    • Ząbkowice District
      • Ząbkowice (Frankenstein)
        • Szklary (Gläsendorf)
Pieczka, A., Włodek, A., Gołębiowska, B., Szełęg, E., Szuszkiewicz, A., Ilnicki, S., Nejbert, K., Turniak, K. (2015): Phosphate-bearing pegmatites in the Góry Sowie Block and adjacent areas, Sudetes, SW Poland. 7th International Symposium on Granitic Pegmatites, PEG 2015 Książ, Poland. Abstracts: 77-78
Mineral and/or Locality  
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