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⇱ Mrázekite: Mineral information, data and localities.

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Mrázekite

A valid IMA mineral species
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About MrázekiteHide

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Formula:
Bi2Cu3(PO4)2O2(OH)2 · H2O
Colour:
Cerulean blue, dark 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 Zdeněk 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.


Name EncodingHide

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ASCII-7:
Mrazekite

Unique IdentifiersHide

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Mindat ID:
2801
Long-form identifier:
mindat:1:1:2801:7

Similar NamesHide

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IMA Classification of MrázekiteHide

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Approved
IMA Formula:
Bi2Cu3(PO4)2O2(OH)2 · 2H2O
Approval year:
1990
First published:
1992

Classification of MrázekiteHide

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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

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference for Standard
MrzIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of MrázekiteHide

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Vitreous
Transparency:
Transparent, Translucent
Colour:
Cerulean blue, dark 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

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Type:
Biaxial (-)
RI values:
nα = 1.8 nβ = 1.86 - 1.87 nγ = 1.9
2V:
Measured: 66° to 68°
Max. Birefringence:
δ = 0.100
Based on recorded range of RI values above.

Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.

Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.

Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars.

Surface Relief:
Moderate
Dispersion:
r < v strong
Pleochroism:
Weak
Comments:
in ink blue tints

Chemistry of MrázekiteHide

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Mindat Formula:
Bi2Cu3(PO4)2O2(OH)2 · H2O
Element Weights:
Element% weight
Bi47.357 %
O23.567 %
Cu21.600 %
P7.019 %
H0.457 %

Calculated from ideal end-member formula.

Crystallography of MrázekiteHide

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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. Wedge-like terminations, rosettes or spherules of radial acicular crystals, crusts.
Comment:
Space Group: P21/n.

X-Ray Powder DiffractionHide

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

Geological EnvironmentHide

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Paragenetic Mode(s):
Geological Setting:
Oxidized zone of polymetallic sulfide deposits.

Type Occurrence of MrázekiteHide

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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

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Other Language Names for MrázekiteHide

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Common AssociatesHide

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Associations Based on Photo Data:
10 photos of Mrázekite associated with EulytineBi4(SiO4)3
7 photos of Mrázekite associated with ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
6 photos of Mrázekite associated with QuartzSiO2
3 photos of Mrázekite associated with Bismutite(BiO)2CO3
2 photos of Mrázekite associated with MetatorberniteCu(UO2)2(PO4)2 · 8H2O
2 photos of Mrázekite associated with PseudomalachiteCu5(PO4)2(OH)4
1 photo of Mrázekite associated with KintoreitePbFe3(PO4)(PO3OH)(OH)6
1 photo of Mrázekite associated with GoethiteFe3+O(OH)
1 photo of Mrázekite associated with EmplectiteCuBiS2
1 photo of Mrázekite associated with OpalSiO2 · nH2O

Related Minerals - Strunz-mindat GroupingHide

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8.DJ.05JohnwalkiteK(Mn2+,Fe2+,Fe3+)2(Nb5+,Ta5+)(PO4)2O2 · 2(H2O,OH)Orth. mm2
8.DJ.05OlmsteaditeKFe2+2(Nb5+,Ta5+)(PO4)2O2 · 2H2OOrth. mm2
8.DJ.10GatumbaiteCaAl2(PO4)2(OH)2 · H2OMon. 2/m : P2/m
8.DJ.15CamgasiteCaMg(AsO4)(OH) · 5H2OMon. 2/m : P21/m
8.DJ.20Meurigite-KKFe3+8(PO4)6(OH)7 · 6.5H2OMon. 2/m : B2/b
8.DJ.20Phosphofibrite(H2O,K)3.5Fe8(PO4)6(OH)7 · 5H2OMon. 2/m
8.DJ.20Meurigite-NaNaFe3+8(PO4)6(OH)7 · 6.5H2OMon. 2/m : B2/b
8.DJ.25JungiteCa2Zn4Fe3+8(PO4)9(OH)9 · 16H2OOrth. mm2 : Aba2
8.DJ.30WycheproofiteNaAlZr(PO4)2(OH) · H2OTric. 1 : P1
8.DJ.35ErcititeNa2Mn3+2(PO4)2(OH)2 · 4H2OOrth. mmm(2/m2/m2/m) : Cmca
8.DJ.45AttikaiteCa3Cu2Al2(AsO4)4(OH)4 · 2H2OOrth. mmm(2/m2/m2/m) : Pban
8.DJ.50MengeiteBa(Mg,Mn2+)Mn3+4(PO4)4(OH)4 · 4H2OTric. 1 : P1

Other InformationHide

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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 MrázekiteHide

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mindat.org URL:
https://www.mindat.org/min-2801.html
Please feel free to link to this page.

References for MrázekiteHide

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Localities for MrázekiteHide

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Showing 16 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 👁 Image
symbol to view information about a locality. The 👁 Image
symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

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👁 Image
- This locality has map coordinates listed. 👁 Image
- This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. 👁 Image
- Good crystals or important locality for species. 👁 Image
- 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.
Australia
  • Victoria
    • Towong Shire
      • Dartmouth
        • Morass Creek gorge
Dunning et al. (1998) +1 other reference
Czech Republic
  • Karlovy Vary Region
    • Karlovy Vary District
      • Abertamy
P.Pauliš
Sejkora et al. (2021)
Hloušek et al. (2002)
France
  • Grand Est
    • Haut-Rhin
      • Colmar-Ribeauvillé
        • Fréland
De Bondt (n.d.)
        • Sainte-Marie-aux-Mines
Chiappero et al. (1995) +1 other reference
Germany
  • Bavaria
    • Upper Palatinate
      • Neustadt an der Waldnaab District
        • Waidhaus
          • Hagendorf
Confirmed by Uwe Kolitsch
  • Hesse
    • Darmstadt
      • Bergstraße
        • Lautertal (Odenwald)
          • Gadernheim
          • Reichenbach
            • Hohenstein
  • Thuringia
    • Saale-Orla District
      • Hirschberg
        • Ullersreuth
Witzke et al. (2001)
Portugal
  • Viseu
    • Sátão
      • Ferreira de Aves
        • Aldeia Nova
Menor-Salván (2012)
Romania
  • Caraş-Severin County
    • Moldova Nouă
Slovakia (TL)
  • Banská Bystrica Region
    • Banská Bystrica District
      • Ľubietová
Rídkošil et al. (1992)
Števko M. et al. (Slovenská republika) +1 other reference
Spain
  • Castile-La Mancha
    • Toledo
      • Aldeanueva de San Bartolomé
Steffen Michalski Collection
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