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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:||18.104.22.168|
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
Crystallography of Brabantite
|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 Å³ (Calculated from Unit Cell)|
Optical Data of Brabantite
|Dispersion:||r < v strong|
Chemical Properties of Brabantite
|Simplified for copy/paste:||CaTh(PO4)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):|
|Related Minerals - Hey's Index Grouping:|
Other Names for Brabantite
|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
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
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.
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New Locality Added: Kuranda, Cairns Region, Queensland, AustraliaFrom Ralph Bottrill, 10th Mar 2014 01:11:57