Mindat Logo

Hallimondite

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



Formula:
Pb
 
2
(UO
 
2
)(AsO
 
4
)
 
2
· nH
 
2
O, 0 ≤ n ≤ 0.5
System:TriclinicHardness:2½ - 3
Name:After Dr. Arthur Francis Hallimond (1890- 1968), British mineralogist, London, England, for his work with secondary uranium minerals.


Hallimondite-Parsonsite Series.
The arsenate analogue of Parsonsite.

Classification of Hallimondite

IMA status:Approved 1965
Strunz 8th edition ID:7/E.08-20
Nickel-Strunz 10th (pending) edition ID:8.EA.10

8 : PHOSPHATES, ARSENATES, VANADATES
E : Uranyl phosphates and arsenates
A : UO2:RO4 = 1:2
Dana 8th edition ID:40.2a.32.1

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2a : AB2(XO4)2·xH2O, containing (UO2)2+
Hey's CIM Ref.:20.7.15

20 : Arsenates (also arsenates with phosphate, but without other anions)
7 : Arsenates of U
mindat.org URL:http://www.mindat.org/min-1807.html
Please feel free to link to this page.

Type Occurrence of Hallimondite

Type Locality:Michael Mine, Weiler, Reichenbach, Lahr, Black Forest, Baden-Württemberg, Germany
Year of Discovery:1961

Physical Properties of Hallimondite

Hardness (Mohs):2½ - 3
Density (calculated):6.445 g/cm3

Crystallography of Hallimondite

Crystal System:Triclinic
Class (H-M):1 - Pinacoidal
Space Group:P1
Cell Parameters:a = 7.12Å, b = 10.48Å, c = 6.86Å
α = 101.2°, β = 95.7°, γ = 86.65°
Ratio:a:b:c = 0.679 : 1 : 0.655
Unit Cell Volume:V 498.64 ų
Z:2

Optical Data of Hallimondite

Type:Biaxial (+)
RI values: nα = 1.882 nγ = 1.915
2V:Measured: 80°
Maximum Birefringence:δ = 0.033

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:r > v

Chemical Properties of Hallimondite

Formula:
Pb
 
2
(UO
 
2
)(AsO
 
4
)
 
2
· nH
 
2
O, 0 ≤ n ≤ 0.5
Simplified for copy/paste:Pb2(UO2)(AsO4)2·nH2O, 0 ≤ n ≤ 0.5
Essential elements:As, H, O, Pb, U
All elements listed in formula:As, H, O, Pb, U

Relationship of Hallimondite to other Species

Series:Forms a series with Parsonsite (see here)
Related Minerals - Nickel-Strunz Grouping):

- +
8.EA.05Orthowalpurgite
(BiO)
 
4
(UO
 
2
)(AsO
 
4
)
 
2
· 2H
 
2
O
8.EA.05Walpurgite
(BiO)
 
4
(UO
 
2
)(AsO
 
4
)
 
2
· 3H
 
2
O
8.EA.05Phosphowalpurgite
(BiO)
 
4
(UO
 
2
)(PO
 
4
)
 
2
· 2H
 
2
O
8.EA.10Parsonsite
Pb
 
2
(UO
 
2
)(PO
 
4
)
 
2
· 2H
 
2
O
8.EA.15Ulrichite
CaCu(UO
 
2
)(PO
 
4
)
 
2
· 4H
 
2
O
8.EA.20Lakebogaite
CaNaFe
3+
2
H(UO
 
2
)
 
2
(PO
 
4
)
 
4
(OH)
 
2
· 8H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
20.7.1Trögerite
(UO
 
2
)
 
3
(AsO
 
4
)
 
2
· 12H
 
2
O (?)
20.7.2Natrouranospinite
(Na
 
2
,Ca)(UO
 
2
)
 
2
(AsO
 
4
)
 
2
· 5H
 
2
O
20.7.3Abernathyite
K
 
2
(UO
 
2
)
 
2
(AsO
 
4
)
 
2
· 6H
 
2
O
20.7.4Metazeunerite
Cu(UO
 
2
)
 
2
(AsO
 
4
)
 
2
· 8H
 
2
O
20.7.5Zeunerite
Cu(UO
 
2
)
 
2
(AsO
 
4
)
 
2
· 12H
 
2
O
20.7.6Metanováčekite
Mg(UO
 
2
)
 
2
(AsO
 
4
)
 
2
· 4-8H
 
2
O
20.7.7Nováčekite-I
Mg(UO
 
2
)
 
2
(AsO
 
4
)
 
2
· 12H
 
2
O
20.7.8Arsenuranylite
Ca(UO
 
2
)
 
4
(AsO
 
4
)
 
2
(OH)
 
4
· 6H
 
2
O
20.7.9Metauranospinite
Ca(UO
 
2
)
 
2
(AsO
 
4
)
 
2
· 8H
 
2
O
20.7.10Uranospinite
Ca(UO
 
2
)(AsO
 
4
)
 
2
· 10H
 
2
O
20.7.11Metaheinrichite
Ba(UO
 
2
)
 
2
(AsO
 
4
)
 
2
· 8H
 
2
O
20.7.12Heinrichite
Ba(UO
 
2
)
 
2
(AsO
 
4
)
 
2
· 10H
 
2
O
20.7.13Metalodèvite
Zn(UO
 
2
)
 
2
(AsO
 
4
)
 
2
· 10H
 
2
O
20.7.14Arsenuranospathite
HAl(UO
 
2
)
 
4
(AsO
 
4
)
 
4
· 40H
 
2
O
20.7.16Hügelite
Pb
 
2
(UO
 
2
)
 
3
(AsO
 
4
)
 
2
O
 
2
· 5H
 
2
O
20.7.17Asselbornite
Pb(BiO)
 
3
(UO
 
2
)
 
4
(AsO
 
4
)
 
2
(OH)
 
7
·4H
 
2
O
20.7.18Metakahlerite
Fe
2+
 
(UO
 
2
)
 
2
(AsO
 
4
)
 
2
· 8H
 
2
O
20.7.19Kahlerite
Fe(UO
 
2
)
 
2
(AsO
 
4
)
 
2
· 12H
 
2
O
20.7.20Metakirchheimerite
Co(UO
 
2
)
 
2
(AsO
 
4
)
 
2
· 8H
 
2
O

Other Names for Hallimondite

Synonyms:
IMA1965-008
Other Languages:
German:Hallimondit
Russian:Хеллимондит
Spanish:Hallimondita

Other Information

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 Hallimondite

Reference List:

- +
Walenta, K. (1965): Hallimondite, a new uranium mineral from the Michael Mine near Reichenbach (Black Forest, Germany). American Mineralogist 50, 1143-1157.

Locock, A.J., Burns, P.C., Flynn, T.M. (2005): The role of water in the structures of synthetic hallimondite, Pb2[(UO2)(AsO4)2](H2O)n and synthetic parsonsite, Pb2[(UO2)(PO4)2](H2O)n, 0 ≤ n ≤ 0.5. American Mineralogist, 90, 240-246.

Burns, P.C. (2005) U 6+ minerals and inorganic compounds: insights into an expanded structural hierarchy of crystal structures. Canadian Mineralogist: 43: 1839-1894.

Internet Links for Hallimondite

Search Engines:
  • Look for Hallimondite on Google
  • Look for Hallimondite images on Google
  • External Links:
  • Look for Hallimondite on Webmineral
  • Look for Hallimondite on Athena Mineralogy
  • Look for Hallimondite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Mineral Dealers:
  • Fine Minerals from Weinrich Minerals, Inc.
  • SpiriferMinerals.com - high quality low prices
  • DAKOTA MATRIX offers Cabinet and Rare Species from Worldwide Localities.
  • Buy from David K Joyce minerals
  • The Arkenstone - Fine Minerals
  • Buy from McDougall Minerals
  • rare and unusual minerals mainly crystallized
  • Lapis Mineral Magazin
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • Buy RARE Minerals from Rocks of Africa
  • Search for Hallimondite on Well-Arranged Molecules
  • Wilensky Fine Minerals
  • Jobs:
  • Mining & Geology Jobs
  • Localities for Hallimondite

    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (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.
    Germany
     
    • Baden-Württemberg
      • Black Forest
        • Lahr
          • Reichenbach
            • Weiler
    Am Min 50 (1965), 1143-1157
        • Schenkenzell
          • Wittichen
            • Böckelsbach valley
    Markl, G. & Slotta, C. (2011): Die Uranmineralien des Lagerstättenreviers Wittichen im mittleren Schwarzwald. Lapis 36 (3), 25-37; 54 (in German).
    • Rhineland-Palatinate
      • Hunsrück
        • Birkenfeld
          • Ellweiler
    Aufschluss 69/(7+8), Lapis 79/(7+8)
    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: April 14, 2014 18:36:47
    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