Braunerite
A valid IMA mineral species - pending publication
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About Braunerite
Formula:
K2Ca(UO2)(CO3)3 · 6H2O
Crystal System:
Monoclinic
Unique Identifiers
Mindat ID:
47780
Long-form identifier:
mindat:1:1:47780:0
Similar Names
| Brannerite | A valid IMA mineral species - grandfathered | UTi2O6 |
| Breunnerite | A variety of 'Iron-bearing Magnesite' [Magnesite] | (Mg,Fe)CO3 |
| Brunnerite | A synonym of 'Prunnerite' |
IMA Classification of Braunerite
Classification of Braunerite
5.ED.55
5 : CARBONATES (NITRATES)
E : Uranyl Carbonates
D : UO2:CO3 = 1:3
5 : CARBONATES (NITRATES)
E : Uranyl Carbonates
D : UO2:CO3 = 1:3
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 |
|---|---|---|
| Bun | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Chemistry of Braunerite
Mindat Formula:
K2Ca(UO2)(CO3)3 · 6H2O
Element Weights:
Crystallography of Braunerite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/b
Setting:
P21/c
Cell Parameters:
a = 17.6725(12) Å, b = 11.6065(5) Å, c = 29.673(3) Å
β = 101.780(8)°
β = 101.780(8)°
Ratio:
a:b:c = 1.523 : 1 : 2.557
Unit Cell V:
5,958.22 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 14.64 Å | (100) |
| 7.29 Å | (65) |
| 7.04 Å | (20) |
| 6.25 Å | (15) |
| 5.71 Å | (28) |
| 4.991 Å | (18) |
| 4.860 Å | (18) |
| 4.118 Å | (50) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] | |
| 47f : [Uranyl (U⁶⁺) minerals] |
Type Occurrence of Braunerite
Place of Conservation of Type Material:
(1) collections of the Department of Mineralogy and Petrology, National Museum, Prague, Czech Republic(catalogue number P1P 14/2015); (2) collections of the Natural History Museum of Los Angeles County, USA catalogue number 65631
Synonyms of Braunerite
Other Language Names for Braunerite
Dutch:Brauneriet
German:Braunerit
Common Associates
Associations Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 5.ED. | Szilagyiite | NaCa3(UO2)(CO3)3(SeO3)F(H2O)6 |
| 5.ED. | Pendevilleite-(Y) | Mg2Y3Al(UO2)2(CO3)7(OH)6(H2O)16 |
| 5.ED. | Paramarkeyite | Ca2(UO2)(CO3)3 · 5H2O |
| 5.ED.05 | Bayleyite | Mg2(UO2)(CO3)3 · 18H2O |
| 5.ED.10 | Swartzite | MgCa(UO2)(CO3)3 · 12H2O |
| 5.ED.15 | Albrechtschraufite | Ca4Mg(UO2)2(CO3)6F2 · 17-18H2O |
| 5.ED.20 | Liebigite | Ca2(UO2)(CO3)3 · 11H2O |
| 5.ED.25 | Rabbittite | Ca3Mg3(UO2)2(CO3)6(OH)4 · 18H2O |
| 5.ED.30 | Andersonite | Na2Ca(UO2)(CO3)3 · 5.33H2O |
| 5.ED.35 | Grimselite | K3Na(UO2)(CO3)3 · H2O |
| 5.ED.40 | Widenmannite | Pb2(OH)2[(UO2)(CO3)2] |
| 5.ED.45 | Znucalite | Zn10Ca0.83(UO2)0.83(CO3)4(OH)15.31(H2O)5.48 |
| 5.ED.50 | Agricolaite | K4(UO2)(CO3)3 |
| 5.ED.50 | Čejkaite | Na4(UO2)(CO3)3 |
| 5.ED.55 | Línekite | K2Ca3[(UO2)(CO3)3]2 · 8H2O |
| 5.ED.60 | Leószilárdite | Na6Mg(UO2)2(CO3)6 · 6H2O |
| 5.ED.65 | Pseudomarkeyite | Ca8(UO2)4(CO3)12 · 21H2O |
| 5.ED.65 | Natromarkeyite | Na2Ca8(UO2)4(CO3)13 · 27H2O |
| 5.ED.65 | Markeyite | Ca9(UO2)4(CO3)13 · 28H2O |
| 5.ED.70 | Paddlewheelite | MgCa5Cu2(UO2)4(CO3)12(H2O)33 |
Radioactivity
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 Braunerite
mindat.org URL:
https://www.mindat.org/min-47780.html
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References for Braunerite
Reference List:
Localities for Braunerite
Showing 3 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.
Czech Republic (TL) | |
| Mineralogical Magazine +1 other reference |
| Plášil et al. (2017) | |
Iran | |
| Khoshnoodi et al. (2025) |
Quick NavTopAbout BrauneriteUnique IdentifiersSimilar NamesIMA Classification Classification Mineral SymbolsChemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatRadioactivityOther InformationInternet Links References Localities Locality List
Svornost Mine, Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic