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Albrechtschraufite

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Formula:
Ca
 
4
Mg(UO
 
2
)
 
2
(CO
 
3
)
 
6
F
 
2
 · 17H
 
2
O
System:TriclinicColour:Yellow-green
Lustre:VitreousHardness:2 - 3
Name:For Albrecht Schrauf, Professor of Mineralogy, University of Vienna, in recognition of his contributions to the knowledge of uranyl carbonate minerals at the discovery locality.


A full description has never been published; only a short abstract is available.

Classification of Albrechtschraufite

IMA status:Approved 1983
Strunz 8th edition ID:5/F.04-40
Nickel-Strunz 10th (pending) edition ID:5.ED.15

5 : CARBONATES (NITRATES)
E : Uranyl Carbonates
D : UO2:CO3 = 1:3
Dana 8th edition ID:16b.7.11.1

16b : HYDRATED CARBONATES CONTAINING HYDROXYL OR HALOGEN
7 : Miscellaneous
Hey's CIM Ref.:12.1.25

12 : Carbonates with other anions
1 : Carbonates with halides
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Type Occurrence of Albrechtschraufite

Type Locality:Jáchymov (St Joachimsthal), Jáchymov (St Joachimsthal) District, Krušné Hory Mts (Erzgebirge), Karlovy Vary Region, Bohemia (Böhmen; Boehmen), Czech Republic
Place of Conservation of Type Material:Natural History Museum, Vienna, Austria, A.a. 6740 (schröckingerite specimen on which the mineral was discovered).
Year of Discovery:1983
Geological Setting of type material:On a museum specimen of schröckingerite.
Associated Minerals at type locality:
UraniniteSchröckingeriteDolomite

Physical Properties of Albrechtschraufite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent, Translucent
Colour:Yellow-green
Streak:White
Hardness (Mohs):2 - 3
Density (measured):2.6 g/cm3
Density (calculated):2.67 g/cm3

Crystallography of Albrechtschraufite

Crystal System:Triclinic
Class (H-M):1 - Pinacoidal
Space Group:P1
Cell Parameters:a = 13.562(3) Å, b = 13.406(3) Å, c = 11.636(3) Å
α = 115.75(2)°, β = 107.66(2)°, γ = 92.86(2)°
Ratio:a:b:c = 1.012 : 1 : 0.868
Unit Cell Volume:V 1,774.53 ų (Calculated from Unit Cell)
Z:2

Chemical Properties of Albrechtschraufite

Formula:
Ca
 
4
Mg(UO
 
2
)
 
2
(CO
 
3
)
 
6
F
 
2
 · 17H
 
2
O
Essential elements:C, Ca, F, H, Mg, O, U
All elements listed in formula:C, Ca, F, H, Mg, O, U

Relationship of Albrechtschraufite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
5.ED.05Bayleyite
Mg
 
2
(UO
 
2
)(CO
 
3
)
 
3
 · 18H
 
2
O
5.ED.10Swartzite
MgCa(UO
 
2
)(CO
 
3
)
 
3
 · 12H
 
2
O
5.ED.20Liebigite
Ca
 
2
(UO
 
2
)(CO
 
3
)
 
3
 · 11H
 
2
O
5.ED.25Rabbittite
Ca
 
3
Mg
 
3
(UO
 
2
)
 
2
(CO
 
3
)
 
6
(OH)
 
4
 · 18H
 
2
O
5.ED.30Andersonite
Na
 
2
Ca(UO
 
2
)(CO
 
3
)
 
3
 · 6H
 
2
O
5.ED.35Grimselite
K
 
3
Na(UO
 
2
)(CO
 
3
)
 
3
 · H
 
2
O
5.ED.40Widenmannite
Pb
 
2
(UO
 
2
)(CO
 
3
)
 
3
5.ED.45Znucalite
Zn
 
12
Ca(UO
 
2
)(CO
 
3
)
 
3
(OH)
 
22
 · 4H
 
2
O
5.ED.50Čejkaite
Na
 
4
(UO
 
2
)(CO
 
3
)
 
3
5.ED.50Agricolaite
K
 
4
(UO
 
2
)(CO
 
3
)
 
3
Related Minerals - Hey's Index Grouping:

- +
12.1.1Northupite
Na
 
3
Mg(CO
 
3
)
 
2
Cl
12.1.2Barentsite
Na
 
7
Al(HCO
 
3
)
 
2
(CO
 
3
)
 
2
F
 
4
12.1.3Rouvilleite
Na
 
3
(Ca,Mn,Fe)
 
2
(CO
 
3
)
 
3
F
12.1.4Chlormagaluminite
Mg
 
4
Al
 
2
(OH)
 
12
Cl
 
2
 · 3H
 
2
O
12.1.5Defernite
Ca
 
6
(CO
 
3
)
 
2-x
(SiO
 
4
)
 
x
(OH)
 
7
(Cl,OH)
 
1-2x
 (x=0.5)
12.1.6Brenkite
Ca
 
2
(CO
 
3
)F
 
2
12.1.7Stenonite
(Sr,Ba,Na)
 
2
Al(CO
 
3
)F
 
5
12.1.8Bastnäsite-(Ce)
(Ce,La)(CO
 
3
)F
12.1.9Bastnäsite-(La)
(La,Ce)(CO
 
3
)F
12.1.10Bastnäsite-(Y)
(Y,Ce)(CO
 
3
)F
12.1.11Parisite-(Ce)
Ca(Ce,La)
 
2
(CO
 
3
)
 
3
F
 
2
12.1.12Parisite-(Nd)
Ca(Nd,Ce,La)
 
2
(CO
 
3
)
 
3
F
 
2
12.1.13Synchysite-(Ce)
Ca(Ce,La)(CO
 
3
)
 
2
F
12.1.14Synchysite-(Y)
Ca(Y,Ce)(CO
 
3
)
 
2
F
12.1.15Synchysite-(Nd)
Ca(Nd,Y,Gd)(CO
 
3
)
 
2
F
12.1.16Röntgenite-(Ce)
Ca
 
2
(Ce,La)
 
3
(CO
 
3
)
 
5
F
 
3
12.1.17Cordylite-(Ce)
NaBaCe
 
2
(CO
 
3
)
 
4
F
12.1.19Huanghoite-(Ce)
BaCe(CO
 
3
)
 
2
F
12.1.20Zhonghuacerite-(Ce)
Ba
 
2
Ce(CO
 
3
)
 
3
F
12.1.21Cebaite-(Ce)
Ba
 
3
Ce
 
2
(CO
 
3
)
 
5
F
 
2
12.1.22Thorbastnäsite
Th(Ca,Ce)(CO
 
3
)
 
2
F
 
2
 · 3H
 
2
O
12.1.23Phosgenite
Pb
 
2
CO
 
3
Cl
 
2
12.1.24Barstowite
Pb
 
4
Cl
 
6
(CO
 
3
) · H
 
2
O
12.1.26Kettnerite
CaBiCO
 
3
OF

Other Names for Albrechtschraufite

Synonyms:
IMA1983-078
Other Languages:
German:Albrechtschraufit
Spanish:Albrechtschraufita

Other Information

Special Storage/
Display Requirements:		Radioactive - Contains uranium - always wash hands after handling. Avoid inhaling dust when handling or breaking. Never lick or ingest. Avoid prolonged exposure in proximity of the body. Store away from inhabited areas.
Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Albrechtschraufite

Reference List:

- +
Mereiter, K. (1984): The crystal structure of albrechtschraufite, MgCa4F2[(UO2)(CO3)3]2.17H2O. Acta Crystallogr., A40, C247.

Ondruš, P., Veselovský, F., Hloušek, J., Skála, R., Vavřín, I., Frýda, J., Čejka, J. and Gabašová, A. (1997): Secondary minerals of the Jáchymov (Joachimsthal) ore district. J. Czech Geol. Soc. 42, 3-76.

Internet Links for Albrechtschraufite

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    • Localities for Albrechtschraufite

    Hide Locality List
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Karlovy Vary Region
        • Krušné Hory Mts (Erzgebirge)
          • Jáchymov (St Joachimsthal) District
    		[Acta Cryst.(1984) A40, C247]
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