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Hydroxyplumbopyrochlore

Collectors Summary

Color blassgelb bis blassbraun
Streak color weiß
Cleavages fehlt
Fracture muschelig
Crystal System kubisch, Fd3m
Morphology Oktaeder, "slightly rhombic dodecahedra" und Würfel, und ihre Kombinationen; Größe 0.01–0.06 mm.

Chemism

Chemical formula

(Pb1.50.5)Nb2O6(OH)

Empirical formula (analysis)

(Pb1.34Ca0.03Fe0.01Sr0.010.61)Σ2(Nb1.75Ti0.12Ta0.12Si0.01)Σ2O6(OH0.53O0.080.39)Σ1

Chemical composition

Blei, Niob, Sauerstoff, Wasserstoff, Vakanz

Unit weight: 584.43341532 u; Number of atoms in the formula: 12

Info

Empirical formula:

(Pb1.34Ca0.03Fe0.01Sr0.01Vc0.61)(Nb1.75Ti0.12Ta0.12Si0.01)O6(OH0.53O0.08Vc0.39)

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Vacancy

Vc

0.00

1

8.33

0.0000000

0.0000000

Hydrogen

H

0.09

0.53

4.42

1.0079470

0.5342119

Oxygen

O

19.38

7.08

59.00

15.9994300

113.2759644

Silicon

Si

0.05

0.01

0.08

28.0855300

0.2808553

Calcium

Ca

0.21

0.03

0.25

40.0784000

1.2023520

Titanium

Ti

0.98

0.12

1.00

47.8671000

5.7440520

Iron

Fe

0.10

0.01

0.08

55.8452000

0.5584520

Strontium

Sr

0.15

0.01

0.08

87.6210000

0.8762100

Niobium

Nb

27.82

1.75

14.58

92.9063820

162.5861685

Tantalum

Ta

3.72

0.12

1.00

180.9479100

21.7137492

Lead

Pb

47.51

1.34

11.17

207.2100000

277.6614000

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

IMA status

anerkannt - CNMNC Newsletter 54 (2020)

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Pyrochlore supergroup  ⇒ Pyrochlore group

Optical Properties

Color

blassgelb bis blassbraun

Streak color

weiß

Diaphaneity (Transparency)

durchsichtig

Crystallography

Crystal System

kubisch

Class (H-M)

m3m

Space Group number

227

Space Group

Fd3m

Cell parameters a (Å)

10.558(2)

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

Volume (ų)

1176.915

Crystal structure

Pyrochlor-Supergruppe; Struktur ermittelt

X-Ray Powder Diffraction

6.051(8), 3.043(100), 2.636(42), 1.862(36), 1.591(43), 1.521(8), 1.320(6), 1.183(12)

XRD chart Hydroxyplumbopyrochlore

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Morphology

Oktaeder, "slightly rhombic dodecahedra" und Würfel, und ihre Kombinationen; Größe 0.01–0.06 mm.

Crystals 3D

Open larger view

Physical Properties

Density (g/cm³)

6.596 ( ρ calc. Mineralienatlas )

Cleavages

fehlt

Fracture

muschelig

Chemical Properties and Tests

Raman-Spektrum beschrieben (Ting Li et al., 2020)

(Co-)Type locality

(Co-)Type locality

Saudi-Arabien/Medina (Al-Madināh)/Al-Mahd/Jabal Sayid peralkalin Granit Komplex

Type material

Typisches Material ist in den mineralogischen Sammlungen des Geologischen Museums von China hinterlegt, Nr. 16 Yangrou Hutong, Xisi, Peking 100031, Volksrepublik China, Katalognummer M13239

Paragenesis of type material

Quarz, Mikroklin, Biotit, Rutil, Zirkon, Calcit, Rhodochrosit, Columbit-(Fe), Goethit, Thorit, Bastnäsit-(Ce), Xenotim-(Y), Samarskit-(Y), Euxenit-(Y), Hydropyrochlor, Fluornatropyrochlor

Preface

Author (Name, Year)

Ting Li, Ziying Li, Guang Fan, Honghai Fan, Jun Zhong, Naser S. Jahdali, Mingkuan Qin, Abdullah M. Jehani, Fenggang Wang, und Mubarak M. Nahdi (2020)

References

Ting Li; Ziying Li; Guang Fan; Honghai Fan; Jun Zhong; Naser S. Jahdali; Mingkuan Qin; Abdullah M. Jehani; Fenggang Wang; Mubarak M. Nahdi: Hydroxyplumbopyrochlore, (Pb1.5, □0.5)Nb2O6(OH), a new member of the pyrochlore group from Jabal Sayid, Saudi Arabia. Mineralogical Magazine Vol. 84, Nr. 5 (2020) S. 785-790.

Li, T., Li, Z., Fan, G., Fan, H., Zhong, J., Jahdali, N. S., Qin, M., Jehani, A. M., Wang, F., and Nahdi, M. M.: Hydroxyplumbopyrochlore, IMA 2018-145, in: CNMNC Newsletter 54, Eur. J. Mineral., 32, https://doi.org/10.5194/ejm-32-275-2020, 2020.

IMA group assignments

 
A2-mD2X6-wZ1-n
 
 

 
 
A2Nb2(O,OH)6Z
kubisch
Fd3m

 
 
 
☐Nb2(O,OH)6Cs1−x {x ∼ 0.20}
kubisch
Fd3m

 
 
 
(Ca,Na)2(Nb,Ti)2O6F
kubisch
Fd3m

 
 
 
(☐,Na,Ce,Ca)2(Nb,Ti)2O6F
 
 

 
 
 
(Na,Pb,Ca,REE,U)2Nb2O6F
kubisch
Fd3m

 
 
 
(Sr,☐)2Nb2(O,OH)6F
 
 

 
 
 
2Nb2O4(OH)2(H2O)
kubisch
Fd3m

 
 
 
(H2O,☐)2Nb2(O,OH)6(H2O)
kubisch
Fd3m

 
 
 
(Ca,Na,U,☐)2(Nb,Ti)2O6(OH)
kubisch
Fd3m

 
 
 
(☐,Ce,Ba)2(Nb,Ti)2O6(OH,F)
kubisch
Fd3m

 
 
 
(Mn,Th,Na,Ca,REE)2(Nb,Ti)2O6(OH)
kubisch
Fd3m

 
 
 
(Na,Сa,Ce)2Nb2O6(OH)
kubisch
Fd3m

 
 
 
(Pb1.50.5)Nb2O6(OH)
kubisch
Fd3m

 
 
 
(Pb,☐)Nb2 O6(☐,O)
 
 

 
 
 
Ca2Nb2O6O
 
 

 
 
 
(Na,Ca,U)2Nb2O6(O,OH)
 
 

 
 
 
Pb2Nb2O6O
 
 

 
 
 
(Y,☐) 2Nb2O6O
 
 

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Actuality: 27. Feb 2024 - 14:22:23

Other languages

German

Hydroxyplumbopyrochlor

English

Hydroxyplumbopyrochlore

CNMNC (IMA)-Number

IMA 2018-145

CNMNC symbol

Symbol

Hppcl

Locations with GPS information

IDs

GUSID (Global unique identifier short form) J9m0R0rI-EyTVMAb7pGuSQ
GUID (Global unique identifier) 47B4D927-C84A-4CF8-9354-C01BEE91AE49
Database ID 8829