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Brabantite

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Formula:
CaTh(PO4)2
System:
Monoclinic
Hardness:
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

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).
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
38.4.3.4

38 : ANHYDROUS NORMAL PHOSPHATES, ARSENATES, AND VANADATES
4 : AXO4
19.10.6

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

Hardness (Mohs):

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(PO4)2
Essential elements:
All elements listed in formula:

Relationship of Brabantite to other Species

7/A.15-10Monazite-(La)(La,Ce,Nd)(PO4)
7/A.15-20Monazite-(Ce)(Ce,La,Nd,Th)(PO4)
7/A.15-30Monazite-(Nd)(Nd,La,Ce)(PO4)
7/A.15-32Monazite-(Sm)(Sm,Gd,Ce,Th)(PO4)
7/A.15-40Cheralite(Ca,Ce)(Th,Ce)(PO4)2
7/A.15-60Gasparite-(Ce)(Ce,REE)(AsO4)
19.10.1OxypyromorphitePb10(PO4)6O
19.10.2PlumbogummitePbAl3(PO4)2(OH)5 · H2O
19.10.3KamitugaiteAlPb(UO2)5(PO4,AsO4)2(OH)9 · 5H2O
19.10.5DrugmanitePb(Fe3+,Al)2(PO4)2(OH)2
19.10.8Grayite(Th,Pb,Ca)(PO4) · H2O
19.10.9Brockite(Ca,Th,Ce)PO4 · H2O
19.10.10SincositeCa(VO)2(PO4)2 · 5H2O
19.10.11XimengiteBi(PO4)
19.10.12Paulkellerite(BiO)2Fe3+(PO4)(OH)2

Other Names for Brabantite

Name in Other Languages:

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.

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

Localities for Brabantite

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 for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
Australia
 
  • Western Australia
    • Port Hedland Shire
      • Wodgina Mine (Wodgina pegmatite)
Pegmatites of Western Australia; M Jacobson, M Calderwood, B Grguric; Hesperian Press, Perth, 2007.
China
 
  • Xinjiang Autonomous Region
    • Yili Hasake Autonomous Prefecture (Ili Kazakh Autonomous Prefecture)
      • Aletai Prefecture (Altay Prefecture)
        • Fuyun Co. (Koktokay Co.)
          • Koktokay pegmatite field (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)
        • Jáchymov District (St Joachimsthal)
          • Horní Blatná District (Platten)
            • Potûčky (Breitenbach)
Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
Pauliš P., Kopecký S., Černý P. 2007: Uranové minerály České Republiky a jejich naleziště. 1. část. (Kutna Hora, issue 1)
      • Lázně Kynžvart (Bad Königswart)
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 (Marchendorf)
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
      • Brabant Farm 168
Neues Jahrb. Mineral. Monatsh. (1980) 6, 247-257.
Slovakia
 
  • Košice Region
    • Rožňava Co.
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.
      • Paramount Canyon
Minerals of New Mexico 3rd ed.
Northrup, Minerals of New Mexico, 3rd Rev. Ed., 1996
Mineral and/or Locality  
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