Znucalite
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About Znucalite
Formula:
Zn12Ca(UO2)(CO3)3(OH)22 · 4H2O
Colour:
White to light yellow
Lustre:
Silky
Crystal System:
Orthorhombic
Name:
Named in 1990 by Petr Ondruš, František Veselovský, and R. Rybka for its chemical composition containing Zinc (Zn), Uranium (U) and Calcium (Ca).
This page provides mineralogical data about Znucalite.
Classification of Znucalite
Approved
Approval year:
1989
5/F.03-15
5.ED.45
5 : CARBONATES (NITRATES)
E : Uranyl Carbonates
D : UO2:CO3 = 1:3
5 : CARBONATES (NITRATES)
E : Uranyl Carbonates
D : UO2:CO3 = 1:3
16b.7.14.1
16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
7 : Miscellaneous
16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
7 : Miscellaneous
11.11.20
11 : Carbonates
11 : Carbonates of Cr and U
11 : Carbonates
11 : Carbonates of Cr and U
Physical Properties of Znucalite
Optical Data of Znucalite
Type:
Biaxial (-)
RI values:
nα = 1.563 nβ = 1.621 nγ = 1.621
2V:
Measured: 50° to 66°
Max Birefringence:
δ = 0.058

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
strong
Chemical Properties of Znucalite
Formula:
Zn12Ca(UO2)(CO3)3(OH)22 · 4H2O
IMA Formula:
CaZn11(UO2)(CO3)3(OH)20 · 4H2O
Crystallography of Znucalite
Crystal System:
Orthorhombic
Cell Parameters:
a = 10.72 Å, b = 25.16 Å, c = 6.32 Å
Ratio:
a:b:c = 0.426 : 1 : 0.251
Unit Cell V:
1,704.60 ų (Calculated from Unit Cell)
Type Occurrence of Znucalite
Synonyms of Znucalite
Other Language Names for Znucalite
Common Associates
Associated Minerals Based on Photo Data:
4 photos of Znucalite associated with Hydrozincite | Zn5(CO3)2(OH)6 |
4 photos of Znucalite associated with Calcite | CaCO3 |
Related Minerals - Nickel-Strunz Grouping
5.ED.05 | Bayleyite | Mg2(UO2)(CO3)3 · 18H2O | Mon. |
5.ED.10 | Swartzite | MgCa(UO2)(CO3)3 · 12H2O | Mon. 2/m : P21/m |
5.ED.15 | Albrechtschraufite | Ca4Mg(UO2)2(CO3)6F2 · 17-18H2O | Tric. 1 : P1 |
5.ED.20 | Liebigite | Ca2(UO2)(CO3)3 · 11H2O | Orth. mm2 |
5.ED.25 | Rabbittite | Ca3Mg3(UO2)2(CO3)6(OH)4 · 18H2O | Mon. |
5.ED.30 | Andersonite | Na2Ca(UO2)(CO3)3 · 6H2O | Trig. 3 : R3 |
5.ED.35 | Grimselite | K3Na(UO2)(CO3)3 · H2O | Hex. |
5.ED.40 | Widenmannite | Pb2(OH)2[(UO2)(CO3)2] | Orth. |
5.ED.50 | Čejkaite | Na4(UO2)(CO3)3 | Mon. m : Bb |
5.ED.50 | Agricolaite | K4(UO2)(CO3)3 | Mon. 2/m : B2/b |
Related Minerals - Hey's Chemical Index of Minerals Grouping
11.11.1 | Stichtite | Mg6Cr3+2(OH)16[CO3] · 4H2O | Trig. 3m (3 2/m) : R3m |
11.11.2 | Rutherfordine | (UO2)CO3 | Orth. mm2 : Imm2 |
11.11.3 | Joliotite | (UO2)CO3 · nH2O | Orth. |
11.11.4 | Grimselite | K3Na(UO2)(CO3)3 · H2O | Hex. |
11.11.5 | Bayleyite | Mg2(UO2)(CO3)3 · 18H2O | Mon. |
11.11.6 | Metazellerite | Ca(UO2)(CO3)2 · 3H2O | Orth. |
11.11.7 | Zellerite | Ca(UO2)(CO3)2 · 5H2O | Orth. |
11.11.8 | Wyartite | CaU5+(UO2)2(CO3)O4(OH) · 7H2O | Orth. |
11.11.9 | Urancalcarite | Ca(UO2)3(CO3)(OH)6 · 3H2O | Orth. |
11.11.10 | Sharpite | Ca(UO2)3(CO3)4 · 3H2O | Orth. mmm (2/m 2/m 2/m) : Cmcm |
11.11.11 | Voglite | Ca2Cu(UO2)(CO3)4 · 6H2O | Mon. |
11.11.12 | Andersonite | Na2Ca(UO2)(CO3)3 · 6H2O | Trig. 3 : R3 |
11.11.13 | Swartzite | MgCa(UO2)(CO3)3 · 12H2O | Mon. 2/m : P21/m |
11.11.14 | Rabbittite | Ca3Mg3(UO2)2(CO3)6(OH)4 · 18H2O | Mon. |
11.11.15 | Kamotoite-(Y) | Y2(UO2)4(CO3)3O4 · 14H2O | Mon. 2/m |
11.11.16 | Shabaite-(Nd) | Ca(Nd,Sm,Y)2(UO2)(CO3)4(OH)2 · 6H2O | Tric. 1 : P1 |
11.11.17 | Astrocyanite-(Ce) | Cu2(Ce,Nd,La)2(UO2)(CO3)5(OH)2 · 1.5H2O | Hex. |
11.11.18 | Bijvoetite-(Y) | Y8(UO2)16(CO3)16O8(OH)8 · 39H2O | Mon. |
11.11.19 | Widenmannite | Pb2(OH)2[(UO2)(CO3)2] | Orth. |
Fluorescence of Znucalite
Yellow-green fluorescence (UV)
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.
References for Znucalite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Neues Jahrbuch für Mineralogie, Monatshefte (1990): 393-400.
American Mineralogist (1994): 79: 1214.
New Minerals (1997) New Minerals 1990-1994.
Internet Links for Znucalite
mindat.org URL:
https://www.mindat.org/min-4428.html
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Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
Localities for Znucalite
Locality List




All localities listed without proper references should be considered as questionable.
Czech Republic (TL) | |
| Neues Jahrb. Mineral., Monatsh. (1991), 393–400 |
| Plášil, J. et al.: Supergenní mineralizace z haldy šachty č. 16 Příbram - Háje. Bulletin mineralogicko-petrografického oddělení Národního muzea v Praze, 2008, vol. 16, 1, 43-55. |
Plášil J., Sejkora J., Čejka J., Škácha P., Goliáš V., Pavlíček R., Hofman P. (2008): Supergenní mineralizace z haldy šachty č. 16 Příbram - Háje. - Bull. mineral.-petrolog. Odd. Nár. Muz. (Praha) 16/1, 43-55. ISSN: 1211-0329. | |
| Lapis 2002(7/8), 63-65 |
Brent Thorne specimen. SXRD analyzed and acquired from Czechmin (Jakob Plasil). | |
France | |
| [MinRec 23:434] |
Germany | |
| Möhn, G. & Desor, J. EDS & Raman spectroscopy (07/2020) |
| Wittern: "Mineralfundorte in Deutschland", 2001 |
Switzerland | |
| Meisser, N. (2012): La minéralogie de l'uranium dans le massif des Aiguilles Rouges. Matér. Géol. Suisse, Sér. géotech. 96, 183 p. |
USA | |
| Bostwick, R.C.: The Picking Table:32(2):4-6 (1991); Ondrush, P. & Veselovsky, F. (authors) confirmed analysis (personal comm. with C.S. Lemanski, Jr.); Dunn(1995):Pt4:626. |
Pete Dunn | |
| Desor, J. (11/2020) SEM-EDS & Raman confirmed |
Jan Evangelista vein, Svornost Mine, Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic