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Pseudomeisserite-(NH4)

Collectors Summary

Crystal System monoklin, P21/c

Chemism

Chemical formula

(NH4)2Na4[(UO2)2(SO4)5]·4H2O

Empirical formula (analysis)

(NH4)1.49K0.60Na3.87U2.00S5.04O28H7.78

Chemical composition

Natrium, Sauerstoff, Schwefel, Stickstoff, Uran, Wasserstoff

Unit weight: 1228.295064164 u; Number of atoms in the formula: 50.27

Info

Empirical formula:

(NH4)1.49K0.60Na3.87U2.00S5.04O28H7.78

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.76

9.27

18.44

1.0079470

9.3436687

Nitrogen

N

1.70

1.49

2.96

14.0067200

20.8700128

Oxygen

O

36.47

28

55.70

15.9994300

447.9840400

Sodium

Na

7.24

3.87

7.70

22.9897702

88.9704107

Sulfur

S

13.16

5.04

10.03

32.0655000

161.6101200

Potassium

K

1.91

0.6

1.19

39.0983100

23.4589860

Uranium

U

38.76

2

3.98

238.0289130

476.0578260

Strunz 9th edition incl. updates

7.EC.

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
E: Uranylsulfate
C: Mit mittelgroßen und großen [Kationen]

IMA status

anerkanntes Mineral April 2019 - CNMNC Newsletter 49

Mineral status

anerkanntes Mineral

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

13.1010(3)

Cell parameters b (Å)

10.0948(2)

Cell parameters c (Å)

19.494(1)

Cell parameters a/b or c/a

1.298

Cell parameters c/b

1.931

Cell parameters α

90°

Cell parameters β

104.285(7)°

Cell parameters γ

90°

Z

4

Volume (ų)

2498.405

Crystal structure

Neuer Strukturtyp; Struktur ermittelt

X-Ray Powder Diffraction

12.69(76), 8.88(55), 6.83(84), 6.01(100), 4.593(51), 4.414(57), 3.959(67), 3.135(76)

XRD chart Pseudomeisserite-(NH4)

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

Physical Properties

Density (g/cm³)

3.22(2) gem.

3.265 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

USA/Utah/San Juan Co./White Canyon District/Red Canyon/Blue Lizard Mine

Type material

Cotyp-Material ist in den mineralogischen Sammlungen des Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, Katalognummern 67621 und 67622 hinterlegt.

Preface

Author (Name, Year)

Anthony R. Kampf, Travis A. Olds, Jakub Plášil, Barbara P. Nash and Joe Marty (2020)

References

Anthony R. Kampf ; Travis A. Olds; Jakub Plášil; Barbara P. Nash; Joe Marty: Pseudomeisserite-(NH4), a new mineral with a novel uranyl-sulfate linkage from the Blue Lizard mine, San Juan County, Utah, USA. Mineralogical Magazine Vol.84, Nr. 3 (2020) S. 435-443.

Kampf, A.R., Olds, T.A., Plášil, J., Nash, B.P. and Marty, J. (2019) Pseudomeisserite-(NH4), IMA 2018-166. CNMNC Newsletter No. 49, June 2019, page xxx; Mineralogical Magazine, 83, 323–328.

Other languages

German

Pseudomeisserit-(NH4)

English

Pseudomeisserite-(NH4)

CNMNC (IMA)-Number

IMA 2018-166

CNMNC symbol

Symbol

Pmss-NH4

Locations with GPS information

IDs

GUSID (Global unique identifier short form) 8sALy6OusE-SLfHWuoHQGg
GUID (Global unique identifier) CB0BC0F2-AEA3-4FB0-922D-F1D6BA81D01A
Database ID 8681