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Ungursaite

Formula:
NaCa
 
5
(Ta,Nb)
 
24
O
 
65
(OH)
System:HexagonalColour:Colourless
Lustre:AdamantineHardness:7


Natrotantite Group.

Originally reported from Ungursai Ta Deposit, Irtysh River, Kalba Range, Shyghys Qazaqstan Oblysy (Vostochno-Kazakhstanskaya [Eastern-Kazakhstan] Oblast'), Kazakhstan.

Classification of Ungursaite

IMA status:Discredited 1988
Explanation of status:name discredited in favour of calciotantite CNMMN (1988)
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Physical Properties of Ungursaite

Lustre:Adamantine
Diaphaneity (Transparency):Transparent
Colour:Colourless
Hardness (Mohs):7

Crystallography of Ungursaite

Crystal System:Hexagonal

Chemical Properties of Ungursaite

Formula:
NaCa
 
5
(Ta,Nb)
 
24
O
 
65
(OH)
Essential elements:Ca, H, Na, O, Ta
All elements listed in formula:Ca, H, Na, Nb, O, Ta

Relationship of Ungursaite to other Species

Member of Group:
Natrotantite Group:

Other Names for Ungursaite

Other Languages:
German:Ungursait
Russian:Унгурсаит
Spanish:Ungursaita

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 Ungursaite

Reference List:Mineral. Zhurnal, Kiev (1985): 7(4): 88.

American Mineralogist (1986): 71: 1546 (abs).

Soviet Physics – Crystallography (1988): 33: 498.

Internet Links for Ungursaite

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    Localities for Ungursaite

    (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.
    Kazakhstan
     
    • Shyghys Qazaqstan Oblysy (Vostochno-Kazakhstanskaya [Eastern-Kazakhstan] Oblast')
      • Kalba Range
        • Irtysh River
    		American Mineralogist (1986): 71: 1546
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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: 13th Nov 2009 03:19:50