Cesiokenopyrochlore from
Tetezantsio pegmatites, Tetezantsio-Andoabatokely Pegmatite Field, Andrembesoa, Betafo District, Vakinankaratra, Madagascar

Locality type:

Pegmatite Field

Classification

Species:

Cesiokenopyrochlore

Formula:

◻Nb₂(O,OH)₆(Cs,◻)

Chemical Analyses:

Oxide wt%:

	1
Cs₂O	22.66 %
Na₂O	1.74 %
CaO	0.64 %
Nb₂O₅	20.87 %
Ta₂O₅	21.27 %
WO₃	30.67 %
H₂O (calc)	0.12 %
Total:	97.97 %

Empirical formulas:

1	Na_0.29Ca_0.06(Nb_0.81W_0.69Ta_0.50)_Σ2[O_5.93(OH)_0.07]_Σ6Cs_0.83

Sample references:

1	Type Specimen	Agakhanov, Atali A., Kasatkin, Anatoly V., Britvin, Sergey N., Siidra, Oleg I., Pautov, Leonid A., Pekov, Igor V., Karpenko, Vladimir Yu. (2021) Cesiokenopyrochlore, the First Natural Niobate with an Inverse Pyrochlore Structure. The Canadian Mineralogist, 59 (1) 149-157 doi:10.3749/canmin.2000056

Comments:

Found in a single sample as rough equant crystals up to 0.05 mm in size intergrown with behierite and rynersonite on the surface of a crystal of behierite.

Abundance at site:

Extremely Rare

Confirmation

Validity:

Valid - Type Locality

Data

Mineral Data:

Click here to view Cesiokenopyrochlore data

Locality Data:

Click here to view Tetezantsio pegmatites, Tetezantsio-Andoabatokely Pegmatite Field, Andrembesoa, Betafo District, Vakinankaratra, Madagascar

Data Identifiers

Mindat Occurrence Record ID:

1072103

Long-form Identifier:

1:3:1072103:2

GUID (UUID V4):

d40563dd-b239-4440-b2dc-b47dfd31b761

References

Mineralogical Magazine, 81, 403–409.

Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2017) New minerals and nomenclature modifications approved in 2017. CNMNC Newsletter No 36. Mineralogical Magazine, 81 (2) 403-409 doi:10.1180/minmag.2017.081.022

Agakhanov, Atali A., Kasatkin, Anatoly V., Britvin, Sergey N., Siidra, Oleg I., Pautov, Leonid A., Pekov, Igor V., Karpenko, Vladimir Yu. (2021) Cesiokenopyrochlore, the First Natural Niobate with an Inverse Pyrochlore Structure. The Canadian Mineralogist, 59 (1) 149-157 doi:10.3749/canmin.2000056

Reference Search (possible matching items)

	Hålenius, Ulf, Hatert, Frédéric, Pasero, Marco, Mills, Stuart J. (2017) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 36. European Journal of Mineralogy, 29 (2) 339-344 doi:10.1127/ejm/2017/0029-2641	Journal (article/letter/editorial)
	Hyršlite Pb8As10Sb6S32 Uchucchacua deposit, Oyon district, Catajambo, Lima Department, Peru (10°370 2300...60(Bi1.35Sb1.35)S2.70S6 Staročeské Lode, Kutná Hora district, Central Bohemia, Czech Republic (49°58.478820...2016-104 Cesiokenopyrochlore □Nb2(O,OH)6Cs1-x (x ~ 0.20) Tetezantsio pegmatites, Tetezantsio-Andoabatokely...okely Pegmatite Field, Betafo District, Antananarivo Province, Madagascar (20°90 S, 46°390 E) Atali A..., Pekov, I.V. and Karpenko, V.Y. (2017) Cesiokenopyrochlore, IMA 2016-104. CNMNC Newsletter No. 36, April
	Biagioni, Cristian, Meisser, Nicolas, Nestola, Fabrizio, Pasero, Marco, Robyr, Martin, Roth, Philippe, Schnyder, Cédric, Gieré, Reto (2018) Hydrokenopyrochlore, (□,#)2Nb2O6·H2O, a new species of the pyrochlore supergroup from the Sahatany Pegmatite Field, Antananarivo Province, Madagascar. European Journal of Mineralogy, 30 (4) 869-876 doi:10.1127/ejm/2018/0030-2761	Journal (article/letter/editorial)
	supergroup from the Sahatany Pegmatite Field, Antananarivo Province, Madagascar Article in European Journal...supergroup from the Sahatany Pegmatite Field, Antananarivo Province, Madagascar CRISTIAN BIAGIONI1,, NICOLAS...the Antandrokomby pegmatite, Sahatany Pegmatite* Field, Antananarivo Province, Madagascar. It occurs as tan...portions of the pegmatitic dikes in the Sahatany Pegmatite Field. Key-words: hydrokenopyrochlore; new mineral...niobium; crystal structure; Sahatany Pegmatite Field; Madagascar. 1. Introduction The pyrochlore supergroup
	Hålenius, U., Hatert, F., Pasero, M., Mills, S. J. (2017) New minerals and nomenclature modifications approved in 2017. CNMNC Newsletter No 36. Mineralogical Magazine, 81 (2) 403-409 doi:10.1180/minmag.2017.081.022	Journal (article/letter/editorial)
	Hyršlite Pb8As10Sb6S32 Uchucchacua deposit, Oyon district, Catajambo, Lima Department, Peru (10°37′ 23″S...60(Bi1.35Sb1.35)Σ2.70S6 Staročeské Lode, Kutná Hora district, Central Bohemia, Czech Republic (49°58.47882′N...Mineralogical Magazine, 81, 403–409. District, Antananarivo Province, Madagascar (20°9′S, 46°39′E) Atali A. Agakhanov..., Pekov, I.V. and Karpenko, V.Y. (2017) Cesiokenopyrochlore, IMA 2016-104. CNMNC Newsletter No. 36, April...IMA No. 2016-104 Cesiokenopyrochlore* □Nb2(O,OH)6Cs1−x (x ∼ 0.20) Tetezantsio pegmatites, TetezantsioAndoabatokely

Cesiokenopyrochlore from Tetezantsio pegmatites, Tetezantsio-Andoabatokely Pegmatite Field, Andrembesoa, Betafo District, Vakinankaratra, Madagascar

Cesiokenopyrochlore from
Tetezantsio pegmatites, Tetezantsio-Andoabatokely Pegmatite Field, Andrembesoa, Betafo District, Vakinankaratra, Madagascar