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IMA2008-024

Formula:
(Ca,Na,REE,[])
 
7
(Nb,Ti)[Si
 
2
O
 
7
]
 
2
OF
 
3
System:Monoclinic


Rinkite group

Classification of IMA2008-024

IMA status:Approved 2008
mindat.org URL:http://www.mindat.org/min-38702.html
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Type Occurrence of IMA2008-024

Type Locality:Rouma Island (Roume; Roma; Ruma), Los Archipelago (Los Islands), Guinea

Crystallography of IMA2008-024

Crystal System:Monoclinic
Class (H-M):m - Domatic
Space Group:Bb {B1 1b} {Cc} {C1c1}
Cell Parameters:a = 7.473Å, b = 11.294Å, c = 18.778Å
β = 101.60°
Ratio:a:b:c = 0.662 : 1 : 1.663
Unit Cell Volume:V 1,552.49 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction:
d-spacingIntensity
3.057 (100)
2.790 (40)
2.689 (46)
2.567 (44)
2.021 (68)
2.004 (33)
1.813 (33)

Chemical Properties of IMA2008-024

Formula:
(Ca,Na,REE,[])
 
7
(Nb,Ti)[Si
 
2
O
 
7
]
 
2
OF
 
3
All elements listed in formula:Ca, F, Na, Nb, O, Si, Ti

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 IMA2008-024

Reference List:IMA website - Proposals approved in August 2008

Internet Links for IMA2008-024

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    Localities for IMA2008-024

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    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.
    Guinea
     
    • Los Archipelago (Los Islands)
    		IMA website - Proposals approved in August 2008
    Mineral and/or Locality
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    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: 28th Oct 2009 18:42:29