Mindat Logo

Albrechtschraufite

This page is currently not sponsored. Click here to sponsor this page.



Formula:
Ca
 
4
Mg(UO
 
2
)
 
2
(CO
 
3
)
 
6
F
 
2
· 17-18H
 
2
O
System:TriclinicColour:Yellow-green
Lustre:VitreousHardness:2 - 3
Name:
Named in 1984 by Kurt Mereiter in honor of Albrecht Schrauf [December 14, 1837, Wien (Vienna), Austria – November 29, 1897, Wien (Vienna), Austria] in recognition of his contributions to the knowledge of uranyl carbonate minerals at the discovery locality. Schrauf was professor of Mineralogy and curator of the Imperial Hofmineralien Cabinet, University of Vienna. Schrauf was an internationally important morphological crystallographer and author. He wrote "Atlas der Krystallformen des Mineralreiches" and much honored textbook "Lehrbuch der physikalischen Mineralogie". He worked with Gustav Tschermak in editing the journal, "Mineralogische Mitteilungen". Schrauf was blinded in his left eye in 1893 when he was making crystallographic measurements and the full intensity of the sun's rays accidentally were directed to his eye.


Visually similar to liebigite and other secondary U minerals.

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
mindat.org URL:http://www.mindat.org/min-97.html
Please feel free to link to this page.

Type Occurrence of Albrechtschraufite

Type Locality:Jáchymov (St Joachimsthal), Jáchymov District (St Joachimsthal), 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 = 13.569(2) Å, b = 13.419(2) Å, c = 11.622(2) Å
α = 115.82(1)°, β = 107.61(1)°, γ = 92.84(1)°
Ratio:a:b:c = 1.011 : 1 : 0.866
Unit Cell Volume:V 1774.6 ų
Z:2
Comment:Structural cell, not reduced.

Chemical Properties of Albrechtschraufite

Formula:
Ca
 
4
Mg(UO
 
2
)
 
2
(CO
 
3
)
 
6
F
 
2
· 17-18H
 
2
O
Simplified for copy/paste:Ca4Mg(UO2)2(CO3)6F2·17-18H2O
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
(OH)
 
2
[(UO
 
2
)(CO
 
3
)
 
2
]
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.

Mereiter, K. (2013): Description and crystal structure of albrechtschraufite, MgCa4F2[UO2(CO3)3]2⋅17-18H2O. Mineralogy and Petrology, 107, 179-188.

Internet Links for Albrechtschraufite

Search Engines:
  • Look for Albrechtschraufite on Google
  • Look for Albrechtschraufite images on Google
  • External Links:
  • Look for Albrechtschraufite on Webmineral
  • Look for Albrechtschraufite on Athena Mineralogy
  • Look for Albrechtschraufite on Wikipedia
  • Look for Albrechtschraufite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Albrechtschraufite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • Rare and Unusual minerals at Mineralogical Research Company
  • The Arkenstone - Fine Minerals
  • Buy RARE Minerals from Rocks of Africa
  • Buy from Dave Bunk Minerals
  • Albrechtschraufite specimens for sale - minfind.com
  • Fine Minerals from Weinrich Minerals, Inc.
  • Buy fine minerals and gemstones from Pala International
  • Search for Albrechtschraufite on Well-Arranged Molecules
  • Find Albrechtschraufite on www.crystalclassics.co.uk
  • Fine minerals from bisbeeborn.com
  • Fine and rare minerals from mintreasure.com
  • Fabre Minerals - search for Albrechtschraufite specimens
  • Localities for Albrechtschraufite

    (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 District (St Joachimsthal)
    Acta Cryst.(1984) A40, C247; Mereiter, K. (2013): Description and crystal structure of albrechtschraufite, MgCa4F2[UO2(CO3)3]2⋅17-18H2O. Mineralogy and Petrology, 107, 179-188.
    Mineral and/or Locality  
    Search Google  
    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: August 28, 2014 07:54:58
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds