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Brabantite

Formula:
CaTh(PO
 
4
)
 
2
System:MonoclinicHardness:5½


A discredited member of the Monazite Group.
The CaTh(PO4)2-dominant members are now called Cheralite.

Originally reported from Van der Made pegmatite (Brabant; Erongo Schlucht), Brabant 86 Farm, Etiro, Karibib District, Erongo Region, Namibia.

Classification of Brabantite

IMA status:Discredited 2007
Explanation of status:CNMMN 05-F: The name brabantite is discredited and to the members dominated by CaTh(PO4)2 in the system 2(REEPO4) - CaTh(PO4)2 - 2(ThSiO4) the name cheralite is applied; see Linthout (2007).
Strunz 8th edition ID:7/A.15-50

7 : Phosphates, Arsenates, Vanadates
A : Waterfree phosphates [PO4]3- without unfamiliar anions, cations of small size: Li, Be, Al
15 : Monazite group
Dana 8th edition ID:38.4.3.4

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
4 : AXO4
Hey's CIM Ref.:19.10.6

19 : Phosphates
10 : Phosphates of Pb, Th, V and Bi
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Physical Properties of Brabantite

Hardness (Mohs):5½

Crystallography of Brabantite

Crystal System:Monoclinic
Cell Parameters:a = 6.72Å, b = 6.93Å, c = 6.44Å
β = 103.88°
Ratio:a:b:c = 0.97 : 1 : 0.929
Unit Cell Volume:V 291.15 ų (Calculated from Unit Cell)

Optical Data of Brabantite

Type:Biaxial
Dispersion:r < v strong

Chemical Properties of Brabantite

Formula:
CaTh(PO
 
4
)
 
2
Essential elements:Ca, O, P, Th
All elements listed in formula:Ca, O, P, Th

Relationship of Brabantite to other Species

Related Minerals - Strunz Grouping):

- +
7/A.15-10Monazite-(La)
(La,Ce,Nd)PO
 
4
7/A.15-20Monazite-(Ce)
(Ce,La,Nd,Th)PO
 
4
7/A.15-30Monazite-(Nd)
(Nd,La,Ce)PO
 
4
7/A.15-32Monazite-(Sm)
(Sm,Gd,Ce,Th)(PO
 
4
)
7/A.15-40Cheralite
(Ca,Ce)(Th,Ce)[PO
 
4
]
 
2
7/A.15-60Gasparite-(Ce)
(Ce,REE)AsO
 
4
Related Minerals - Hey's Index Grouping:

- +
19.10.1 Oxypyromorphite
Pb
 
10
(PO
 
4
)
 
6
O
19.10.2Plumbogummite
PbAl
 
3
[(OH)
 
5
|(PO
 
4
)
 
2
] · H
 
2
O
19.10.3Kamitugaite
AlPb(UO
 
2
)
 
5
[(OH)
 
9
|(PO
 
4
,AsO
 
4
)
 
2
] · 5H
 
2
O
19.10.5Drugmanite
Pb(Fe
3+
 
,Al)
 
2
[OH|PO
 
4
]
 
2
19.10.8Grayite
(Th,Pb,Ca)PO
 
4
·H
 
2
O
19.10.9Brockite
(Ca,Th,Ce)(PO
 
4
)·H
 
2
O
19.10.10Sincosite
CaV
 
2
(PO
 
4
)
 
2
O
 
2
·5H
 
2
O
19.10.11Ximengite
BiPO
 
4
19.10.12Paulkellerite
(BiO)
 
2
Fe
3+
 
[(OH)
 
2
|PO
 
4
]

Other Names for Brabantite

Synonyms:
CathophoriteIMA1978-003Lingaitukuang
Other Languages:
German:Brabantit
Cathophorit
Russian:Брабантит
Spanish:Brabantita
Cathophorita

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 Brabantite

Reference List:Amer. Mineral. 66:878-879

Linthout, K. (2007): Tripartite division of the system 2REEPO4 – CaTh(PO4)2– 2ThSiO4, discreditation of brabantite, and recognition of cheralite as the name for members dominated by CaTh(PO4)2. Can. Mineral. 45, 503-508.

Internet Links for Brabantite

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    Localities for Brabantite

    Hide Locality List
    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.
    China
     
    • Xinjiang (Xinjiang-Uygur) Autonomous Region
      • Yili Hasake (Ili Kazakh) Autonomous Prefecture
        • Aletai (Altay) Prefecture
          • Fuyun Co.
            • Koktokay (Keketuohai) Pegmatite field
              • Altay Mine
    		Wang Xianjue (1978): Kexue Tongbao 23, 743–745 (in Chinese).
    Czech Republic
     
    • Bohemia (Böhmen; Boehmen)
      • Karlovy Vary Region
    		Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
        • Krušné Hory Mts (Erzgebirge)
          • Abertamy (Abertham)
            • Horní Blatná (Bergstadt Platten)
    		Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
          • Ostrov
    		Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
        • Lázně Kynžvart
    		Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
      • South Bohemia Region
        • Jindřichův Hradec okres
          • Majdalena
    		Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
      • Ústí Region
    		Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
    • Moravia (Mähren; Maehren)
      • Olomouc Region
        • Šumperk (Mährisch Schönberg)
          • Maršíkov
    		Novák, M.: Maršíkov - Schinderhübel. In Exkurzní průvodce po mineralogických lokalitách na Sobotínsku. Univerzita Palackého v Olomouci, 2002, Olomouc, s. 34-37.
      • Vysočina Region
    		Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
        • Žďár nad Sázavou
    		Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
    www.cseg.ca/conferences/2000/556.PDF.
    Germany & Czech Republic
     
    • Saxony & Ústí Region (Bohemia; Böhmen; Boehmen)
      • Erzgebirge; Krusné Hory Mts
    		Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
    Namibia
     
    • Erongo Region
      • Karibib District
        • Etiro
          • Brabant 86 farm
    		Neues Jahrb. Mineral. Monatsh. (1980) 6, 247-257.
    Slovakia
     
    • Košice Region
      • Eastern Slovenské Rudohorie Mts
    		Koděra, M. et al., 1986 a 1990 : Topografická mineralógia Slovenska, diel 1- 3, Veda – Vydavateľstvo SAV, Bratislava, 1990, 1 – 1590k
    USA
     
    • New Mexico
      • Sierra Co.
    		Minerals of New Mexico 3rd ed.
    Northrup, Minerals of New Mexico, 3rd Rev. Ed., 1996
    Mineral and/or Locality
    Google
     
    www.mindat.org Web
    Copyright © Jolyon Ralph and Ida Chau 1993-2009. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them.Further information contact the 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 hundreds of members and supporters. If you would like to add information to improve the quality of our database, then click here to register. Current server date and time: 4th Nov 2009 11:17:32