Zdenĕkite
A valid IMA mineral species
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About Zdenĕkite
Zdenĕk Johan
Formula:
NaPbCu5(AsO4)4Cl · 5H2O
Colour:
Intense blue
Lustre:
Vitreous
Hardness:
1½ - 2
Crystal System:
Monoclinic
Member of:
Name:
Named by P.-J. Chiappero and H. Sarp in 1995 in honour of Dr. Zdenĕk Johan (18 November 1935, Lomnice nad Popelkou, Czech Republic - 13 February 2016, Orléans, France), mineralogist and Director of Scientific Affairs of the Bureau de Recherches Géologiques et Minières, France. Vice president of the International Mineralogical Association, 1996-1998. The mineral is based on his given name rather than his family name because the mineral johannite was already named.
Name Encoding
CP1252:
Zdenekite
Latin-1:
Zdenekite
ASCII-7:
Zdenekite
Unique Identifiers
Mindat ID:
7384
Long-form identifier:
mindat:1:1:7384:0
Similar Names
| Stanĕkite | A valid IMA mineral species | (Mn2+,Fe2+,Mg)Fe3+(PO4)O |
IMA Classification of Zdenĕkite
Classification of Zdenĕkite
8.DG.05
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
G : With large and medium-sized cations, (OH, etc.):RO4< 0.5:1
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
G : With large and medium-sized cations, (OH, etc.):RO4< 0.5:1
42.9.4.3
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
9 : (AB)7(XO4)4Zq·xH2O
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
9 : (AB)7(XO4)4Zq·xH2O
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Zde | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Zdenĕkite
Optical Data of Zdenĕkite
Type:
Uniaxial (-)
RI values:
nω = 1.77 nε = 1.71
Max. Birefringence:
δ = 0.060
Based on recorded range of RI values above.
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. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
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. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized uniaxial interference figure - the conoscopic
(convergent-light, Bertrand-lens-in) view, for a grain cut with the optic axis
centred and vertical. The coloured rings are isochromatics, computed with the
same physics as the Michel-Lévy bar above; the dark cross is the isogyre.
For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
Chemistry of Zdenĕkite
Mindat Formula:
NaPbCu5(AsO4)4Cl · 5H2O
Element Weights:
Crystallography of Zdenĕkite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Cell Parameters:
a = 10.023 Å, b = 19.55 Å, c = 10.023 Å
β = 90.02°
β = 90.02°
Ratio:
a:b:c = 0.513 : 1 : 0.513
Unit Cell V:
1964 ų
Z:
4
Morphology:
Thin pseudotetragonal plates.
Twinning:
Several twin laws appear to exist.
Comment:
Space group P21/n. Pseudo-tetragonal metrics.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.78 Å | (100) |
| 6.998 Å | (52) |
| 4.888 Å | (21) |
| 4.460 Å | (26) |
| 4.393 Å | (43) |
| 3.973 Å | (26) |
| 3.114 Å | (44) |
| 3.113 Å | (32) |
| 3.083 Å | (20) |
| 2.973 Å | (20) |
| 2.732 Å | (24) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] | |
| 47g : [Halogen-bearing surface weathering minerals] | |
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 55 : Anthropogenic mine minerals |
Type Occurrence of Zdenĕkite
Synonyms of Zdenĕkite
Other Language Names for Zdenĕkite
Relationship of Zdenĕkite to other Species
Member of:
Other Members of Lavendulan Group:
| Lavendulan | NaCaCu5(AsO4)4Cl · 5H2O | Mon. 2/m |
| Sampleite | NaCaCu5(PO4)4Cl · 5H2O | Orth. mmm(2/m2/m2/m) : Cmmm |
Common Associates
Associations Based on Photo Data:
| 4 photos of Zdenĕkite associated with Geminite | Cu2+(AsO3OH) · H2O |
| 2 photos of Zdenĕkite associated with Mahnertite | NaCu3(AsO4)2Cl · 5H2O |
| 1 photo of Zdenĕkite associated with Mimetite | Pb5(AsO4)3Cl |
| 1 photo of Zdenĕkite associated with Tennantite Subgroup | Cu6(Cu4C2+2)As4S12S |
| 1 photo of Zdenĕkite associated with Quartz | SiO2 |
Related Minerals - Strunz-mindat Grouping
| 8.DG. | Jasonsmithite | Mn2+4ZnAl(PO4)4(OH)(H2O)7 · 3.5H2O |
| 8.DG. | Davidbrownite-(NH4) | (NH4)5(V4+O)2(C2O4)[PO2.75(OH)1.25]4 · 3H2O |
| 8.DG. | Relianceite-(K) | K4Mg(V4+O)2(C2O4)(PO3OH)4(H2O)10 |
| 8.DG. | Pleysteinite | [(H2O)0.5K0.5]2Mn2Al3(PO4)4F2 · 14H2O |
| 8.DG.05 | Fluor-rewitzerite | [(H2O)K]Mn2(Al2Ti)(PO4)4(OF)(H2O)10 · 4H2O |
| 8.DG.05 | Lavendulan | NaCaCu5(AsO4)4Cl · 5H2O |
| 8.DG.05 | Lemanskiite | NaCaCu5(AsO4)4Cl · 3H2O |
| 8.DG.05 | Sampleite | NaCaCu5(PO4)4Cl · 5H2O |
| 8.DG.05 | Rewitzerite | [K(H2O)]Mn2Al3(PO4)4(OH)2 · 14H2O |
| 8.DG.10 | Dacostaite | K(Mg2Al)[Mg(H2O)6]2(AsO4)2F6 · 2H2O |
Other Information
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 Zdenĕkite
mindat.org URL:
https://www.mindat.org/min-7384.html
Please feel free to link to this page.
Please feel free to link to this page.
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External Links:
Mineral Dealers:
References for Zdenĕkite
Reference List:
Chiappero, Pierre-Jacques, Sarp, Halil (1995) Zdenekite, NaPbCu5(AsO4)4Cl · 5H2O, a new mineral from the Cap Garonne mine, Var, France. European Journal of Mineralogy, 7 (3) 553-557 doi:10.1127/ejm/7/3/0553
Jambor, John L., Pertsev, Nikolai N., Roberts, Andrew C. (1996) New mineral names. American Mineralogist, 81. 249-254
Zubkova, N. V., Pushcharovsky, D. Yu., Sarp, H., Teat, S. J., MacLean, E. J. (2003) Crystal structure of zdenekite NaPbCu5(AsO4)4Cl · 5H2O. Crystallography Reports, 48 (6) 939-943 doi:10.1134/1.1627435
Localities for Zdenĕkite
Showing 8 localities.
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Australia | |
| Birch BH Book |
| Peter Elliot pers comm | |
France (TL) | |
| Chiappero et al. (1995) +1 other reference |
Greece | |
| Joachim Gröbner & Uwe Kolitsch (unpublished SEM-EDS and PXRD analyses on Ca-bearing sample) +1 other reference |
| Möckel (2001) |
Italy | |
| Desor (09/2020) |
| //doi.org/10.57635/MICRO.2025.23.16 |
Spain | |
| Calvo Rebollar et al. (2022) |
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Cap Garonne Mine, Le Pradet, Toulon, Var, Provence-Alpes-Côte d'Azur, France