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Unnamed (OH-analogue of Mimetite)

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08807470017271951892315.jpg
Unnamed (OH-analogue of Mimetite), etc.

Steirische Kalkspitze, Giglach lakes, Giglach valley, Schladming, Liezen District, Styria, Austria
04915000017271951901140.jpg
Unnamed (OH-analogue of Mimetite), etc.

Steirische Kalkspitze, Giglach lakes, Giglach valley, Schladming, Liezen District, Styria, Austria
00880480017271951914518.jpg
Unnamed (OH-analogue of Mimetite)

Abraham adit, West slope, Silberberg, Geyer - Silberberg mining district, Reith im Alpbachtal, Kufstein District, Tyrol, Austria
08807470017271951892315.jpg
Unnamed (OH-analogue of Mimetite), etc.

Steirische Kalkspitze, Giglach lakes, Giglach valley, Schladming, Liezen District, Styria, Austria
04915000017271951901140.jpg
Unnamed (OH-analogue of Mimetite), etc.

Steirische Kalkspitze, Giglach lakes, Giglach valley, Schladming, Liezen District, Styria, Austria
00880480017271951914518.jpg
Unnamed (OH-analogue of Mimetite)

Abraham adit, West slope, Silberberg, Geyer - Silberberg mining district, Reith im Alpbachtal, Kufstein District, Tyrol, Austria
08807470017271951892315.jpg
Unnamed (OH-analogue of Mimetite), etc.

Steirische Kalkspitze, Giglach lakes, Giglach valley, Schladming, Liezen District, Styria, Austria
04915000017271951901140.jpg
Unnamed (OH-analogue of Mimetite), etc.

Steirische Kalkspitze, Giglach lakes, Giglach valley, Schladming, Liezen District, Styria, Austria
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About Unnamed (OH-analogue of Mimetite)Hide

Formula:
Pb5(AsO4)3(OH)
Crystal System:
Hexagonal
Currently the chemistry is only inferred from SEM-EDS analyses which gave a mimetite-type formula, but without any Cl (Schachinger et al., 2014). The same specimen also contained "normal" mimetite.
An OH end-member was also detected in the Black Forest, Germany (Markl et al., 2014).

Known as a synthetic phase.


Unique IdentifiersHide

Mindat ID:
44420
Long-form identifier:
mindat:1:1:44420:0

Classification of Unnamed (OH-analogue of Mimetite)Hide

Strunz-mindat (2025):
8.BN.05

8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
N : With only large cations, (OH, etc.):RO4 = 0.33:1

Chemistry of Unnamed (OH-analogue of Mimetite)Hide

Mindat Formula:
Pb5(AsO4)3(OH)
Element Weights:
Element% weight
Pb70.488 %
As15.293 %
O14.151 %
H0.069 %

Calculated from ideal end-member formula.
Elements listed:
As, H, O, Pb - search for minerals with similar chemistry

Crystallography of Unnamed (OH-analogue of Mimetite)Hide

Crystal System:
Hexagonal
Class (H-M):
6/m - Dipyramidal
Space Group:
P63/m
Cell Parameters:
a = 10.1266(3) Å, c = 7.5010(2) Å
Ratio:
a:c = 1 : 0.741
Unit Cell V:
666.16 ų (Calculated from Unit Cell)
Comment:
Cell data for synthetic material (Weil, 2021).

Relationship of Unnamed (OH-analogue of Mimetite) to other SpeciesHide

Member of:
Apatite Group > Apatite Supergroup
Other Members of Apatite Group:
AlforsiteBa5(PO4)3ClHex. 6/m : P63/m
ApatiteCa5(PO4)3(Cl/F/OH)
ChlorapatiteCa5(PO4)3ClHex. 6/m : P63/m
FluoralforsiteBa5(PO4)3FHex. 6/m : P6/m
FluorapatiteCa5(PO4)3FHex. 6/m : P63/m
FluorpyromorphitePb5(PO4)3FHex. 6/m : P63/m
HydroxylapatiteCa5(PO4)3(OH)Hex. 6/m : P63/m
HydroxylpyromorphitePb5(PO4)3(OH)Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
JohnbaumiteCa5(AsO4)3(OH)Hex. 6/m : P63/m
MimetitePb5(AsO4)3ClHex. 6/m : P63/m
OxypyromorphitePb10(PO4)6O
PieczkaiteMn5(PO4)3ClHex. 6/m : P63/m
PliniusiteCa5(VO4)3FHex. 6/m : P63/m
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. 6/m : P63/m
VanadinitePb5(VO4)3ClHex. 6/m : P63/m

Common AssociatesHide

Associated Minerals Based on Photo Data:
2 photos of Unnamed (OH-analogue of Mimetite) associated with OxyplumboroméitePb2Sb2O6O
2 photos of Unnamed (OH-analogue of Mimetite) associated with QuartzSiO2

Related Minerals - Strunz-mindat GroupingHide

8.BN.FluoralforsiteBa5(PO4)3FHex. 6/m : P6/m
8.BN.AraditeBaCa6[(SiO4)(VO4)](VO4)2FTrig. 3m : R3m
8.BN.MagganasiteCuFe3+3O(AsO4)3Tric. 1 : P1
8.BN.FluorpyromorphitePb5(PO4)3FHex. 6/m : P63/m
8.BN.FluorsigaiiteCa2Sr3(PO4)3FHex. 6/m : P63/m
8.BN.05PieczkaiteMn5(PO4)3ClHex. 6/m : P63/m
8.BN.05FluorapatiteCa5(PO4)3FHex. 6/m : P63/m
8.BN.05FluorcaphiteSrCaCa3(PO4)3FHex. 6/m : P63/m
8.BN.05VanadinitePb5(VO4)3ClHex. 6/m : P63/m
8.BN.05HedyphaneCa2Pb3(AsO4)3ClHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
8.BN.05HydroxylhedyphaneCa2Pb3(AsO4)3(OH)Trig. 3 : P3
8.BN.05Mimetite-MPb5(AsO4)3ClMon. 2/m : P21/b
8.BN.05JohnbaumiteCa5(AsO4)3(OH)Hex. 6/m : P63/m
8.BN.05PliniusiteCa5(VO4)3FHex. 6/m : P63/m
8.BN.05Hydroxylapatite-MCa5(PO4)3OHMon. 2/m : P21/b
8.BN.05HydroxylpyromorphitePb5(PO4)3(OH)Hex. 6/mmm (6/m 2/m 2/m) : P63/mcm
8.BN.05Miyahisaite(Sr,Ca)2Ba3(PO4)3F Hex. 6/m : P63/m
8.BN.05Carlgieseckeite-(Nd)NaNdCa3(PO4)3FTrig. 3 : P3
8.BN.05Belovite-(Ce)NaCeSr3(PO4)3FTrig. 3 : P3
8.BN.05Kuannersuite-(Ce)NaCeBa3(PO4)3F0.5Cl0.5Trig. 3 : P3
8.BN.05AlforsiteBa5(PO4)3ClHex. 6/m : P63/m
8.BN.05StronadelphiteSr5(PO4)3FHex. 6/m : P63/m
8.BN.05ParafiniukiteCa2Mn3(PO4)3ClHex. 6/m : P63/m
8.BN.05MimetitePb5(AsO4)3ClHex. 6/m : P63/m
8.BN.05 vaGermanate-pyromorphitePb5(PO4)2GeO4
8.BN.05Belovite-(La)NaLaSr3(PO4)3FTrig. 3 : P3
8.BN.05FluorphosphohedyphaneCa2Pb3(PO4)3FHex. 6/m : P63/m
8.BN.05FluorstrophiteSrCaSr3(PO4)3FHex. 6/m : P63/m
8.BN.05HydroxylapatiteCa5(PO4)3(OH)Hex. 6/m : P63/m
8.BN.05Johnbaumite-MCa5(AsO4)3OHMon. 2/m : P21/m
8.BN.05PhosphohedyphaneCa2Pb3(PO4)3ClHex. 6/m : P63/m
8.BN.05TurneaureiteCa5(AsO4)3ClHex. 6/m : P63/m
8.BN.05MorelanditeCa2Ba3(AsO4)3ClHex.
8.BN.05OxypyromorphitePb10(PO4)6O
8.BN.05Deloneite(Na0.5REE0.25Ca0.25)(Ca0.75REE0.25)Sr1.5(CaNa0.25REE0.25)(PO4)3F0.5(OH)0.5Trig. 3 : P3
8.BN.05ChlorapatiteCa5(PO4)3ClHex. 6/m : P63/m
8.BN.05PyromorphitePb5(PO4)3ClHex. 6/m : P63/m
8.BN.05VanackeritePb4Cd(AsO4)3ClTrig. 3 : P3
8.BN.05SvabiteCa5(AsO4)3FHex. 6/mmm (6/m 2/m 2/m) : P63/mmc
8.BN.10ArctiteNa2Ca4(PO4)3FTrig. 3m (3 2/m) : R3m
8.BN.10KrügeriteBaCa6(SiO4)2[(P0.5S0.5)O4]2FTrig. 3m (3 2/m) : R3m
8.BN.15GoryainoviteCa2(PO4)ClOrth. mmm (2/m 2/m 2/m) : Pbcm

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 Unnamed (OH-analogue of Mimetite)Hide

References for Unnamed (OH-analogue of Mimetite)Hide

Reference List:
Engel, G. (1970) Hydrothermalsynthese von Bleihydroxylapatiten Pb5(XO4)3OH mit X = P, As, V. Die Naturwissenschaften, 57 (7) 355 doi:10.1007/bf01173112
Schachinger, T., Kolitsch, U., Bernhard, F. & Bojar, H.-P. (2014): Erzmineralisationen und ihre Verwitterungsprodukte aus dem weiteren Bereich der Steirischen und Lungauer Kalkspitze. Der Steirische Mineralog 28, 8-21. https://www.zobodat.at/pdf/Der-steirische-Mineralog_28_2014_0008-0021.pdf
Markl, G., Marks, M. A. W., Holzapfel, J., Wenzel, T. (2014) Major, minor, and trace element composition of pyromorphite-group minerals as recorder of supergene weathering processes from the Schwarzwald mining district, SW Germany. American Mineralogist, 99 (5) 1133-1146 doi:10.2138/am.2014.4789
Kwaśniak-Kominek, Monika, Matusik, Jakub, Bajda, Tomasz, Manecki, Maciej, Rakovan, John, Marchlewski, Tomasz, Szala, Barbara (2015) Fourier transform infrared spectroscopic study of hydroxylpyromorphite Pb10(PO4)6OH2–hydroxylmimetite Pb10(AsO4)6(OH)2 solid solution series. Polyhedron, 99. 103-111 doi:10.1016/j.poly.2015.07.002
Sordyl, Julia, Puzio, Bartosz, Manecki, Maciej, Borkiewicz, Olaf, Topolska, Justyna, Zelek-Pogudz, Sylwia (2020) Structural Assessment of Fluorine, Chlorine, Bromine, Iodine, and Hydroxide Substitutions in Lead Arsenate Apatites (Mimetites)–Pb5(AsO4)3X. Minerals, 10 (6) 494 doi:10.3390/min10060494
Weil, Matthias (2021) Crystal structure refinements of the lead(II) oxoarsenates(V) Pb2As2O7, Pb(H2AsO4)2, Pb5(AsO4)3OH and NaPb4(AsO4)3 from single-crystal X-ray data. Minerals, 11 (11) 1156 doi:10.3390/min11111156

Localities for Unnamed (OH-analogue of Mimetite)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.
Austria
 
  • Salzburg
    • St. Johann im Pongau District
      • Bad Gastein
        • Naßfeld valley
          • Kreuzkogel massif
            • Radhausberg
Auer (2021)
    • Tamsweg District
      • Tweng
Kolitsch et al. (2021)
  • Styria
    • Liezen District
      • Schladming
        • Giglach valley
          • Giglach lakes
Schachinger et al. (2014)
  • Tyrol
    • Kufstein District
      • Reith im Alpbachtal
        • Geyer - Silberberg mining district
          • Silberberg
            • West slope ("Am Geyer")
C.Auer (2016)
    • Landeck District
      • Serfaus
        • Komperdell (Komperdell Alp)
Kolitsch et al. (2020)
Germany
 
  • Baden-Württemberg
    • Freiburg Region
      • Ortenaukreis
        • Seelbach
          • Seelbach
            • Weiler
Markl et al. (2014)
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Plaka
          • Plaka Mines
Uwe Kolitsch and Branko Rieck analyses (see also http://lavrion.gr/Minerals/Updates.html)
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