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Mrázekite

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Formula:
Bi2Cu3(PO4)2O2(OH)2 · H2O
Colour:
Cerulean blue
Lustre:
Vitreous
Hardness:
2 - 3
Specific Gravity:
4.90
Crystal System:
Monoclinic
Name:
Named by T. Rídkošil, V. Šrein, J. Fábry, J. Hybler, and B.A. Maximov in 1992 in honor of Zdenek Mrázek (15 February 1952 - 15 April 1984), a Czech mineralogist who first collected the species and suspected it was new.
This page provides mineralogical data about Mrázekite.


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Classification of MrázekiteHide

Approved
Approval Year:
1990
First Published:
1992
7/D.53-100
8.DJ.40

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
J : With large and medium-sized cations, (OH, etc.):RO4 = 1:1
42.4.15.1

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
4 : (AB)5(XO4)2Zq·xH2O

Physical Properties of MrázekiteHide

Vitreous
Transparency:
Transparent, Translucent
Colour:
Cerulean blue
Streak:
light blue
Hardness:
2 - 3 on Mohs scale
Cleavage:
Distinct/Good
201
Density:
4.90(2) g/cm3 (Measured)    5.00 g/cm3 (Calculated)

Optical Data of MrázekiteHide

Type:
Biaxial (-)
RI values:
nα = 1.800 nβ = 1.860 - 1.870 nγ = 1.900
2V:
Measured: 66° to 68°
Max Birefringence:
δ = 0.100
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r < v strong
Pleochroism:
Weak
Comments:
in ink blue tints

Chemical Properties of MrázekiteHide

Formula:
Bi2Cu3(PO4)2O2(OH)2 · H2O
IMA Formula:
Bi2Cu3(PO4)2O2(OH)2 · 2H2O

Crystallography of MrázekiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Cell Parameters:
a = 9.065(1) Å, b = 6.340(1) Å, c = 5.410(3) Å
β = 101.57(1)°
Ratio:
a:b:c = 1.43 : 1 : 0.853
Unit Cell V:
304.61 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Acicular to slender bladed crystals. Wedgelike terminations, rosettes or spherules of radial acicular crystals, crusts.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.630 (100)
6.089 (42)
5.407 (56)
5.198 (46)
5.146 (49)
3.637 (35)
3.170 (35)
3.042 (87)
3.016 (77)
2.927 (76)
Comments:
Only peaks >30% of max. Data from Effenberger, et al. 1994.

Occurrences of MrázekiteHide

Paragenetic Mode(s):
•  Oxidation

Type Occurrence of MrázekiteHide

General Appearance of Type Material:
Slender needles isolated or loosely grouped as small rosettes in a quartz matrix.
Place of Conservation of Type Material:
Charles University, Prague
Geological Setting of Type Material:
Oxidation zone of an ore deposit containing chalcopyrite, tetrahedrite, psuedomalachite, apatite and an unknown primary bismuth mineral.
Associated Minerals at Type Locality:

Synonyms of MrázekiteHide

Other Language Names for MrázekiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Eulytine7 photos of Mrázekite associated with Eulytine on mindat.org.
Chrysocolla3 photos of Mrázekite associated with Chrysocolla on mindat.org.
Quartz2 photos of Mrázekite associated with Quartz on mindat.org.
Emplectite1 photo of Mrázekite associated with Emplectite on mindat.org.
Torbernite1 photo of Mrázekite associated with Torbernite on mindat.org.

Related Minerals - Nickel-Strunz GroupingHide

8.DJ.05JohnwalkiteK(Mn2+,Fe2+,Fe3+)2(Nb5+,Ta5+)(PO4)2O2 · 2(H2O,OH)Orth.
8.DJ.05OlmsteaditeKFe2+2(Nb5+,Ta5+)(PO4)2O2 · 2H2OOrth.
8.DJ.10GatumbaiteCaAl2(PO4)2(OH)2 · H2OMon. 2/m : P2/m
8.DJ.15CamgasiteCaMg(AsO4)(OH) · 5H2OMon. 2/m : P21/m
8.DJ.20Phosphofibrite(H2O,K)3.5Fe8(PO4)6(OH)7 · 5H2OMon. 2/m
8.DJ.20Meurigite-KKFe3+8(PO4)6(OH)7 · 6.5H2OMon. 2/m : B2/b
8.DJ.20Meurigite-NaNaFe3+8(PO4)6(OH)7 · 6.5H2OMon. 2/m : B2/b
8.DJ.25JungiteCa2Zn4Fe3+8(PO4)9(OH)9 · 16H2OOrth.
8.DJ.30WycheproofiteNaAlZr(PO4)2(OH) · H2OTric.
8.DJ.35ErcititeNa2Mn3+2(PO4)2(OH)2 · 4H2OMon.
8.DJ.45AttikaiteCa3Cu2Al2(AsO4)4(OH)4 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pban

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 MrázekiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Rídkošil, T., Šrein, V., Fábry, J., Hybler, J., Maximov, B.A. (1992) Mrázekite, Bi2Cu3(OH)2O2(PO4)2·2H2O. The Canadian Mineralogist: 30: 215-224.
Jambor, J.L. (1992) New mineral names. American Mineralogist: 77: 1305-1309.
Effenberger, H., Krause, W., Belendorff, K., Bernhardt, H.J., Medenbach, O., Hybler, J., Petříček, V. (1994) Revision of the crystal structure of mrázekite, Bi2Cu3(OH)2O2(PO4)2·2H2O. The Canadian Mineralogist: 32: 365-372.
Jambor, J.L., Puziewicz, J., Roberts, A.C. (1995) New mineral names. American Mineralogist: 80: 404-409.

Internet Links for MrázekiteHide

Localities for MrázekiteHide

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.
Australia
 
  • Victoria
    • East Gippsland Shire
      • Benambra
        • Morass Creek gorge
Mineralogical Record: 29: 164.
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Karlovy Vary Region
      • Krušné Hory Mts (Erzgebirge)
        • Jáchymov District (St Joachimsthal)
P.Pauliš, J.Sejkora, M.Urban 2015 - Cínový revír Hřebečná. Mineral XXIII.,2015/4
Lapis 2002(7/8), 63-65
France
 
  • Grand Est
    • Haut-Rhin
      • Ste Marie-aux-Mines (Markirch)
Le cahier des micromnteurs, 1998, 1, pp 27-28; Chiappero, P.-J., Forner, H., Lefevre, M., Meisser, N., and Moreau, F. (1995): Mrazekit aus Brézouard, Dépt. Bas-Rhin. Lapis, 20, 21 (in German).
Paul De Bondt.
Germany
 
  • Hesse
    • Odenwald
      • Lautertal (Odenwald)
        • Gadernheim
No reference listed
        • Reichenbach
          • Hohenstein
No reference listed
No reference listed
  • Thuringia
    • Vogtland
      • Hirschberg
        • Ullersreuth
T. Witzke et al.: Lapis 2001(12), 13-27
Portugal
 
  • Viseu District
    • Sátão
      • Ferreira de Aves
        • Aldeia Nova
César Menor-Salván (2012) Mrázekita, Bi2Cu3(PO4)2O2(OH)2·2H2O, de la mina Assunçao (Aldeia Nova, Ferreria de Aves, Viseu, Portugal). ACOPIOS-Revista Ibérica de Mineralogía, Vol 3 (2012): 21-25.
Romania
 
  • Caraş-Severin Co.
    • Banat Mts
      • Moldova Nouă-Sasca Cu-Mo ore field
No reference listed
Slovakia (TL)
 
  • Banská Bystrica Region
    • Banská Bystrica Co.
      • Ľubietová (Libetbánya; Libethen)
Řídkošil, T., Šrein, V., Fábry, J., Hybler, J., Maximov, B. A. (1992): Mrázekite, Bi2Cu3(OH)2O2(PO4).2H2O, a new mineral species and its crystal structure. Canadian Mineralogist, 30, 215-224.
Řídkošil T., Šrein V., Fábry J., Hybler J., Maximov B. A., 1992: Mrázekite, Bi2Cu3(OH)2O2(PO4)•2H2O, a new mineral species and its crystal structure. Canadian Mineralogist, 30, 215-224. Števko M., Sejkora J., Malíková R., 2016: Nové údaje o supergénnych mineráloch z banského poľa Rainer, ložisko Ľubietová-Podlipa (Slovenská republika). Bull. mineral.-petrolog. Odd. Nár. Muz. (Praha) 24, 1, 1-12 (in Slovak with English abstract).
Mineral and/or Locality  
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