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Bariopyrochlore

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Bariopyrochlor

Bildbreite: 7 mm; Fundort: Kukisvumchorr, Khibiny, Kola, Murmansk, Russland

Pavel M. Kartashov

Contribution: slugslayer 2009-04-19

Locality: Kukisvumchorr / Chibiny (Khibiny) / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color

grün grau, gelb grau

Streak color

weiß

Hardness (Mohs)

5.5

Cleavages

undeutlich {111}

Fracture

muschelig

Crystal System

kubisch, Fd3m

Morphology

kubisch

Chemism

Chemical formula

(Ba,Sr)(Nb,Ti)₂(O,OH)₇

Empirical formula (analysis)

Ba_0.30Sr_0.22Ca_0.05Ce_0.04Na_0.03Fe_0.02K_0.01Th_0.01(Nb_1.83Ti_0.17)O_5.61(H₂O)_0.80

Chemical composition

Barium, Niob, Strontium, Titan, Sauerstoff, Wasserstoff

Unit weight: 354.926602866 u; Number of atoms in the formula: 10.69

Info

Empirical formula:

Ba_0.30Sr_0.22Ca_0.05Ce_0.04Na_0.03Fe_0.02K_0.01Th_0.01(Nb_1.83Ti_0.17)O_5.61(H₂O)_0.80

Element	Symbol	Weight%	Atoms	Atoms%	Atom weight (u)	Sum weight (u)
Hydrogen	H	0.45	1.6	14.97	1.0079470	1.6127152
Oxygen	O	28.90	6.41	59.96	15.9994300	102.5563463
Sodium	Na	0.19	0.03	0.28	22.9897702	0.6896931
Potassium	K	0.11	0.01	0.09	39.0983100	0.3909831
Calcium	Ca	0.56	0.05	0.47	40.0784000	2.0039200
Titanium	Ti	2.29	0.17	1.59	47.8671000	8.1374070
Iron	Fe	0.31	0.02	0.19	55.8452000	1.1169040
Strontium	Sr	5.43	0.22	2.06	87.6210000	19.2766200
Niobium	Nb	47.90	1.83	17.12	92.9063820	170.0186791
Barium	Ba	11.61	0.3	2.81	137.3277000	41.1983100
Cerium	Ce	1.58	0.04	0.37	140.1161000	5.6046440
Thorium	Th	0.65	0.01	0.09	232.0381100	2.3203811

Search for minerals with similar chemistry

Strunz 9th edition incl. updates

4.DH.15

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
D: Metall: Sauerstoff = 1:2 und vergleichbare
H: Mit großen (± mittelgroßen) [Kationen]; Lagen kantenverknüpfter Oktaeder
15:Pyrochlor-Gruppe

Classification by Hölzel

4.CH.962

4: OXIDES
C: R₂O₃ Sesquioxides
H: Pyrochlore-Group, Nb-dominant on the B-site

Hey's Chemical Index of Minerals

18.01.17

18: Niobates and Tantalates
01: Niobates and tantalates containing neither rare earths nor U

Dana 8th edition

08.02.01.03

08: Multiple Oxides with Nb, Ta, and Ti
02: Multiple Oxides with Nb, Ta, and Ti where (A)2 (B2O6) (O,OH,F)
01: Pyrochlore Group (Pyrochlore Subgroup; Nb>Ta;(Nb+Ta)>2(Ti)

IMA status

diskreditiert - The Canadian Mineralogist Vol. 48, pp. 673-698 (2010)

Mineral status

Varietät

Variety / polytype of

Pyrochlore supergroup

Optical Properties

Color	grün grau, gelb grau
Streak color	weiß
Diaphaneity (Transparency)	transparent bis durchscheinend
RI value α / ω / n	2.85
Ri mean	2.85
2V angle	Isotropisch

Crystallography

Crystal System	kubisch
Class (H-M)	m3m
Space Group number	227
Space Group	Fd3m
Cell parameters a (Å)	10.562
Cell parameters b (Å)	-
Cell parameters c (Å)	-
Cell parameters a/b or c/a	1
Cell parameters c/b	-
Cell parameters α	90°
Cell parameters β	90°
Cell parameters γ	90°
Z	8
Volumne (Å³)	1178.253
X-Ray Powder Diffraction	6.09(80), 3.18(50), 3.044(100), 1.864(70), 1.590(70), 1.210(50), 1.180(50), 1.016(60)
	Calculated from d-spacing and intensity at 0.1541838 nm (Cu)
Morphology	kubisch

Crystals 3D

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Crystal Structure 3D

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Physical Properties

Hardness (Mohs)	5.5
VHN (Hardness Vickers)	550 (100g)
Density (g/cm³)	4.1 (gemessen) 4.01 (berechnet)
	4.001 ( ρ calc. Mineralienatlas )
Cleavages	undeutlich {111}
Fracture	muschelig
Tenacity	spröde

(Co-)Type locality

Tansania /Mbeya, Region /Amboseli /Mbeya /Panda Hill

Preface

Author (Name, Year)

Jäger & Niggli & van der Veen, 1959

References

American Mineralogist 62 (1977), 403

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

'Betafite (of Hogarth 1977)' (Var.v. Pyrochlore supergroup)	(Ca,Na,U)₂(Ti,Nb,Ta)₂O₆(OH) kubisch : m3m : Fd3m	4.DH.15
Hydroplumboelsmoreite	(Pb,☐)₂(W,Fe³⁺)₂O₆(H₂O) kubisch : m3m : Fd3m	4.DH.15
Fluornatrocoulsellite	CaNa₃AlMg₃F₁₄ trigonal : 3m : R3m	4.DH.15
Hydroxymanganopyrochlore	(Mn,Th,Na,Ca,REE)₂(Nb,Ti)₂O₆(OH) kubisch : m3m : Fd3m	4.DH.15
'Alumotungstite' (Var.v. Hydrokenoelsmoreite)	(H₂O,Ca)_x(W,Al)₂(O,OH)₆·nH₂O kubisch	4.DH.15
'Calciobetafite' (Var.v. Pyrochlore supergroup)	Ca₂(Ti,Nb)₂(O,OH)₇ kubisch : m3m : Fd3m	4.DH.15
'Cesstibtantite' (Var.v. Pyrochlore supergroup)	(Cs,Na)SbTa₄O₁₂ kubisch : m3m : Fd3m	4.DH.15
'Ferritungstite' (Var.v. Hydrokenoelsmoreite)	(W⁶⁺,Fe³⁺)₂(O,OH)₆·n(H₂O,K,Ca,Na) kubisch : m3m : Fd3m	4.DH.15
Hydropyrochlore	(H₂O,☐)₂Nb₂(O,OH)₆(H₂O) kubisch : m3m : Fd3m	4.DH.15
'Plumbobetafite' (Var.v. Pyrochlore supergroup)	(Pb,U,Ca)(Ti,Nb)₂O₆(OH,F) kubisch : m3m : Fd3m	4.DH.15
'Stibiobetafite' (Var.v. Pyrochlore group)	(Sb³⁺,Ca)₂(Ti,Nb,Ta)₂(O,OH)₇ kubisch : m3m : Fd3m	4.DH.15
'Uranmicrolite' (Var.v. Microlite group)	(Ca,U)₂(Ta,Nb)₂O₆(OH,F) kubisch : m3m : Fd3m	4.DH.15
'Uranopyrochlore' (Var.v. Pyrochlore supergroup)	(Ca,U,Na,Ce)₂(Nb,Ta)₂(O,OH,F)₇ kubisch : m3m : Fd3m	4.DH.15
'Bariomicrolite'	Ba(Ta,Nb)₂(O,OH)₇ kubisch : m3m : Fd3m	4.DH.15
'Bariopyrochlore' (Var.v. Pyrochlore supergroup)	(Ba,Sr)(Nb,Ti)₂(O,OH)₇ kubisch : m3m : Fd3m	4.DH.15
'Natrobistantite' (Var.v. Microlite group)	(Na,Cs)Bi(Ta,Nb,Sb)₄O₁₂ kubisch	4.DH.15
'Plumbomicrolite' (Var.v. Microlite group)	(Pb,Na,Ca)₂(Ta,Nb)₂(O,OH)₇ kubisch : m3m : Fd3m	4.DH.15
'Plumbopyrochlore' (Var.v. Pyrochlore group)	(Pb,Y,U,Ca)_2-xNb₂O₆(OH) kubisch : m3m : Fd3m	4.DH.15
'Stannomicrolite' (Var.v. Microlite group)	(Sn²⁺,Fe²⁺)(Ta,Nb,Sn⁴⁺)₂(O,OH)₇ kubisch : m3m : Fd3m	4.DH.15
'Stibiomicrolite' (Var.v. Microlite group)	(Sb,Ca,Na)₂(Ta,Nb)₂(O,OH)₇ kubisch : m3m : Fd3m	4.DH.15
'Bismutomicrolite'	(Bi,Ca)(Ta,Nb)₂O₆(OH) kubisch : m3m : Fd3m	4.DH.15
'Bismutopyrochlore' (Var.v. Pyrochlore supergroup)	(Bi,U,Ca,Pb)_1+x(Nb,Ta)₂O₆(OH)·nH₂O kubisch : m3m : Fd3m	4.DH.15
Oxynatromicrolite	(Na,Ca,U)₂(Ta,Nb)₂O₆(O,F) kubisch : m3m : Fd3m	4.DH.15
'Yttrobetafite-(Y)' (Var.v. Pyrochlore supergroup)	(Y,U,Ce)₂(Ti,Nb,Ta)₂O₆(OH) amorph	4.DH.15
'Strontiopyrochlore' (Var.v. Pyrochlore group)	Sr_0.6Nb₂(O,OH)₇ kubisch : m3m : Fd3m	4.DH.15
Cesiokenopyrochlore	☐Nb₂(O,OH)₆Cs_1−x {x ∼ 0.20} kubisch : m3m : Fd3m	4.DH.15
Hydrokenoelsmoreite	WO₃·0.5H₂O kubisch : m3m : Fd3m	4.DH.15
Hydrokenomicrolite	(◻,H₂O)₂Ta₂(O,OH)₆(H₂O) kubisch : m3m : Fd3m	4.DH.15
Oxybismutomicrolite	(Bi_1.33☐0.67)_Σ2Ta₂O₆O kubisch : m3m : Fd3m	4.DH.15
Oxycalciomicrolite	Ca₂Ta₂O₇ kubisch : m3m : Fd3m	4.DH.15
Oxystannomicrolite	Sn₂Ta₂O₆O kubisch : m3m : Fd3m	4.DH.15
Oxystibiomicrolite	(Sb³⁺,Ca)₂Ta₂O₆O	4.DH.15
'Yttropyrochlore-(Y)' (Var.v. Pyrochlore group)	(Y,Na,Ca,U)_1-2(Nb,Ta,Ti)₂(O,OH)₇ kubisch	4.DH.15
'Ceriopyrochlore-(Ce)' (Var.v. Pyrochlore supergroup)	(Ca,Ce,Y,Na)₂(Nb,Ta)₂(O,OH,F)₇ kubisch : m3m : Fd3m	4.DH.15
Fluornatromicrolite	(Na,Ca,Bi)₂(Ta,Nb)₂O₆F kubisch : m3m : Fd3m	4.DH.15
Fluornatropyrochlore	(Na,Pb,Ca,REE,U)₂Nb₂O₆F kubisch : m3m : Fd3m	4.DH.15
Hydrokenopyrochlore	☐₂Nb₂O₄(OH)₂(H₂O) kubisch : m3m : Fd3m	4.DH.15
Hydroxyferroroméite	(Fe²⁺_1.5☐_0.5)Sb⁵⁺₂O₆(OH) kubisch : m3m : Fd3m	4.DH.15
Kenoplumbomicrolite	(Pb,◻)₂Ta ₂O₆(◻,O,OH) kubisch : m3m : Fd3m	4.DH.15
Oxycalciopyrochlore	Ca₂Nb₂O₆O	4.DH.15
Fluorcalciomicrolite	(Ca,Na)₂Ta₂(O,OH)₆F kubisch : m3m : Fd3m	4.DH.15
Hydroxykenoelsmoreite	(☐,Pb)₂(W,Fe³⁺,Al)₂(O,OH)₆(OH) trigonal : 3 : R3	4.DH.15
Hydroxykenomicrolite	(◻,Na,Sb³⁺)₂Ta₂O₆(OH) kubisch : m3m : Fd3m	4.DH.15
Hydroxykenopyrochlore	(☐,Ce,Ba)₂(Nb,Ti)₂O₆(OH,F) kubisch : m3m : Fd3m	4.DH.15
Fluorcalciopyrochlore	(Ca,Na)₂(Nb,Ti)₂O₆F kubisch : m3m : Fd3m	4.DH.15
Hydroxynatropyrochlore	(Na,Сa,Ce)₂Nb₂O₆(OH) kubisch : m3m : Fd3m	4.DH.15
Hydroxycalciomicrolite	Ca_1.5Ta₂O₆(OH) kubisch : 432 : P4₃32	4.DH.15
Hydroxyplumbopyrochlore	(Pb_1.5☐_0.5)Nb₂O₆(OH) kubisch : m3m : Fd3m	4.DH.15
Hydroxycalciopyrochlore	(Ca,Na,U,☐)₂(Nb,Ti)₂O₆(OH) kubisch : m3m : Fd3m	4.DH.15
Fluorcalcioroméite	(Ca,Na)₂Sb⁵⁺₂O₆(F,OH) kubisch : m3m : Fd3m	4.DH.15d

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

'Uranopyrochlore' (Var.v. Pyrochlore supergroup)	(Ca,U,Na,Ce)₂(Nb,Ta)₂(O,OH,F)₇ kubisch : m3m : Fd3m	4.CH.911
'Strontiopyrochlore' (Var.v. Pyrochlore group)	Sr_0.6Nb₂(O,OH)₇ kubisch : m3m : Fd3m	4.CH.912
'Ceriopyrochlore-(Ce)' (Var.v. Pyrochlore supergroup)	(Ca,Ce,Y,Na)₂(Nb,Ta)₂(O,OH,F)₇ kubisch : m3m : Fd3m	4.CH.913
'Bismutopyrochlore' (Var.v. Pyrochlore supergroup)	(Bi,U,Ca,Pb)_1+x(Nb,Ta)₂O₆(OH)·nH₂O kubisch : m3m : Fd3m	4.CH.914
Fluorkenopyrochlore	(☐,Na,Ce,Ca)₂(Nb,Ti)₂O₆F	4.CH.920
Hydropyrochlore	(H₂O,☐)₂Nb₂(O,OH)₆(H₂O) kubisch : m3m : Fd3m	4.CH.961
'Bariopyrochlore' (Var.v. Pyrochlore supergroup)	(Ba,Sr)(Nb,Ti)₂(O,OH)₇ kubisch : m3m : Fd3m	4.CH.962

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

'Pyrochlore'		08.02.01.01
Hydropyrochlore	(H₂O,☐)₂Nb₂(O,OH)₆(H₂O) kubisch : m3m : Fd3m	08.02.01.02
'Bariopyrochlore' (Var.v. Pyrochlore supergroup)	(Ba,Sr)(Nb,Ti)₂(O,OH)₇ kubisch : m3m : Fd3m	08.02.01.03
'Yttropyrochlore-(Y)' (Var.v. Pyrochlore group)	(Y,Na,Ca,U)_1-2(Nb,Ta,Ti)₂(O,OH)₇ kubisch	08.02.01.04
'Ceriopyrochlore-(Ce)' (Var.v. Pyrochlore supergroup)	(Ca,Ce,Y,Na)₂(Nb,Ta)₂(O,OH,F)₇ kubisch : m3m : Fd3m	08.02.01.05
'Plumbopyrochlore' (Var.v. Pyrochlore group)	(Pb,Y,U,Ca)_2-xNb₂O₆(OH) kubisch : m3m : Fd3m	08.02.01.06
'Uranopyrochlore' (Var.v. Pyrochlore supergroup)	(Ca,U,Na,Ce)₂(Nb,Ta)₂(O,OH,F)₇ kubisch : m3m : Fd3m	08.02.01.07
'Bismutopyrochlore' (Var.v. Pyrochlore supergroup)	(Bi,U,Ca,Pb)_1+x(Nb,Ta)₂O₆(OH)·nH₂O kubisch : m3m : Fd3m	08.02.01.09
'Bariomicrolite'	Ba(Ta,Nb)₂(O,OH)₇ kubisch : m3m : Fd3m	08.02.02.02
'Plumbomicrolite' (Var.v. Microlite group)	(Pb,Na,Ca)₂(Ta,Nb)₂(O,OH)₇ kubisch : m3m : Fd3m	08.02.02.03
'Uranmicrolite' (Var.v. Microlite group)	(Ca,U)₂(Ta,Nb)₂O₆(OH,F) kubisch : m3m : Fd3m	08.02.02.04
'Bismutomicrolite'	(Bi,Ca)(Ta,Nb)₂O₆(OH) kubisch : m3m : Fd3m	08.02.02.05
'Stannomicrolite' (Var.v. Microlite group)	(Sn²⁺,Fe²⁺)(Ta,Nb,Sn⁴⁺)₂(O,OH)₇ kubisch : m3m : Fd3m	08.02.02.06
'Stibiomicrolite' (Var.v. Microlite group)	(Sb,Ca,Na)₂(Ta,Nb)₂(O,OH)₇ kubisch : m3m : Fd3m	08.02.02.07
'Betafite group'		08.02.03.01
'Yttrobetafite-(Y)' (Var.v. Pyrochlore supergroup)	(Y,U,Ce)₂(Ti,Nb,Ta)₂O₆(OH) amorph	08.02.03.02
'Plumbobetafite' (Var.v. Pyrochlore supergroup)	(Pb,U,Ca)(Ti,Nb)₂O₆(OH,F) kubisch : m3m : Fd3m	08.02.03.03
'Stibiobetafite' (Var.v. Pyrochlore group)	(Sb³⁺,Ca)₂(Ti,Nb,Ta)₂(O,OH)₇ kubisch : m3m : Fd3m	08.02.03.04
'Calciobetafite' (Var.v. Pyrochlore supergroup)	Ca₂(Ti,Nb)₂(O,OH)₇ kubisch : m3m : Fd3m	08.02.03.05
'Cesstibtantite' (Var.v. Pyrochlore supergroup)	(Cs,Na)SbTa₄O₁₂ kubisch : m3m : Fd3m	08.02.04.01
'Natrobistantite' (Var.v. Microlite group)	(Na,Cs)Bi(Ta,Nb,Sb)₄O₁₂ kubisch	08.02.04.02
Zircosulfate	Zr(SO₄)₂·4H₂O orthorhombisch : mmm : Fddd	08.02.05.01
Orthobrannerite	U⁴⁺U⁶⁺Ti₄O₁₂(OH)₂ orthorhombisch : 222 : P2₁22	08.02.07.01
'Parabariomicrolite ' (Pol.v. Hydrokenomicrolite)	BaTa₄O₁₀(OH)₂·2H₂O	08.02.08.01

Related minerals "Hey's Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

'Bariopyrochlore' (Var.v. Pyrochlore supergroup)

(Ba,Sr)(Nb,Ti)₂(O,OH)₇

kubisch : m3m : Fd3m

18.01.17

Alternative Name

	Pandait
	Pandaita
	Pandaite

Automatic Links to external internet sources (Responsibility is with the operator)

German pages	DeWikiPedia - search for: Bariopyrochlor Google-Bilder-Suche - search for: Bariopyrochlor Mineralogisch-Petrographisches-Institut Hamburg - search for: Bariopyrochlor
English pages	Mindat - search for: Bariopyrochlore Webmineral - search for:Bariopyrochlore Handbook-of-Mineralogy - search for: Bariopyrochlore RRUFF - Raman, XRD and other mineral data - search for: Bariopyrochlore RRUFF - References and PDF downloads - search for: Bariopyrochlore American-Mineralogist-Crystal-Structure-Database - search for: Bariopyrochlore Athena - search for: Bariopyrochlore
Russian pages	Webmineral.ru - search for: Бариопирохлор

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