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Rietveldite (Rietveldit)

Pictures (2 Images total)

Rietveldit xx
Views (File:
1653636635
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Rietveldit xx
Grube Clara, Oberwolfach, Bildbreite 0,69 mm, Foto Volker Draxler - Endbearbeitung Kh. Grosch in Zusammenarbeit mit Volker
Copyright: Volker Draxler; Contribution: Karlheinz Grosch
Collection: Volker Draxler
Location: Deutschland/Baden-Württemberg/Freiburg, Bezirk/Ortenaukreis/Oberwolfach/Grube Clara
Mineral: Rietveldite
Image: 1653636635
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
Rietveldit xx  E
Analysed with energy dispersive X-ray spectroscopy EDX
R
Analysed with RAMAN spectroscopy

Grube Clara, Oberwolfach, Bildbreite 0,69 mm, Foto Volker Draxler - Endbearbeitung Kh. Grosch in Zusammenarbeit mit Volker

Collection: Volker Draxler
Copyright: Volker Draxler
Contribution: Karlheinz Grosch 2022-05-27
Locality: Grube Clara / Oberwolfach / Ortenaukreis / Freiburg, Bezirk / Baden-Württemberg / Deutschland
Rietveldit
Views (File:
1582647906
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Rietveldit
nadeliger Rietveldit, Giveway-Simplot Mine, White Canyon, San Juan, Utah, USA; BB < 1 cm
Copyright: Joy Desor; Contribution: openpit
Location: USA/Utah/San Juan Co./White Canyon District/Giveaway-Simplot mine
Mineral: Rietveldite
Image: 1582647906
License: Usage for Mineralienatlas project only
Rietveldit

nadeliger Rietveldit, Giveway-Simplot Mine, White Canyon, San Juan, Utah, USA; BB < 1 cm

Copyright: Joy Desor
Contribution: openpit 2020-02-25
Locality: Giveaway-Simplot mine / White Canyon District / San Juan Co. / Utah / USA

Collectors Summary

Color bräunlichgelb bis gelblichbeige
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 2
Cleavages gut nach {010}, deutlich nach {100} und {001}
Crystal System orthorhombisch, Pmn21

Chemism

Chemical formula

Fe(UO2)(SO4)2(H2O)5

Chemical composition

Eisen, Sauerstoff, Schwefel, Uran, Wasserstoff

Unit weight: 608.076033 u; Number of atoms in the formula: 29

Info

Empirical formula:

Fe(UO2)(SO4)2(H2O)5

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.66

10

34.48

1.0079470

10.0794700

Oxygen

O

39.47

15

51.72

15.9994300

239.9914500

Sulfur

S

10.55

2

6.90

32.0655000

64.1310000

Iron

Fe

9.18

1

3.45

55.8452000

55.8452000

Uranium

U

39.14

1

3.45

238.0289130

238.0289130

Strunz 9th edition incl. updates

7.EB.

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

Lapis Classification

VI/D.21-006

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
D: Wasserhaltige Sulfate, mit fremden Anionen
21: Uranylsulfate [UO2] 2+ – [SO4] 2-

IMA status

anerkannt - CNMNC Newsletter 2016

Mineral status

anerkanntes Mineral

Optical Properties

Color

bräunlichgelb bis gelblichbeige

Streak color

weiß

Diaphaneity (Transparency)

durchsichtig bis durchscheinend

Lustre

Glasglanz

max. Birefringence

0.016

Birefringence chart\! Rietveldite title=Birefringence chart Rietveldite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.570(1)

RI value β

1.577(1)

RI value γ / ε

1.586(1)

2V angle

biaxial (+), 82(1)°

Orientation

X=b, Y=a, Z=c

Dispersion

sehr stark

Pleochroism

sehr schwach unter polarisiertem Licht

Optical Data Luminescence

Color LW-UV (365nm)



keine

Color SW-UV (254nm)



keine

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mm2

Space Group number

31

Space Group

Pmn21

Cell parameters a (Ã…)

12.9577(9)

Cell parameters b (Ã…)

8.3183(3)

Cell parameters c (Ã…)

11.2971(5)

Cell parameters a/b or c/a

1.558

Cell parameters c/b

1.358

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

1217.67

Crystal structure

Strukturell verwandt mit Svornostit; Struktur bestimmt

X-Ray Powder Diffraction

8.309(34),
6.477(100),
5.110(58),
4.668(48),
4.653(36),
3.428(41),
3.341(33),
3.238(49)

XRD chart Rietveldite

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

2

Density (g/cm³)

3.31 (bestimmt) 3.274 (berechnet)

3.317 ( ρ calc. Mineralienatlas )

Cleavages

gut nach {010}, deutlich nach {100} und {001}

Tenacity

spröde

Radioactivity

vorhanden, da uranhaltig

Chemical Properties and Tests

in Wasser mit Raumtemperatur leicht löslich

(Co-)Type locality

(Co-)Type locality

USA/Utah/San Juan Co./White Canyon District/Giveaway-Simplot mine

Tschechien/Karlsbad (Karlovarský kraj)/Karlsbad (Okres Karlovy Vary)/St. Joachimsthal (Jáchymov)

Deutschland/Sachsen/Dresden/Gittersee/Grube Willi Agatz

Type material

Cotyp-Materialien

Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA, catalogue numbers 66291 and 66292 (sample from USA)

TU Bergakademie Freiberg, Germany, catalogue number 84140 (sample from Germany)

National Museum Prague, Department of Mineralogy and Petrology, Cirkusová 1740, CZ 193 00 Prague, Czech Republic, catalogue number P1N 45564 (sample from Czech Republic)

Preface

Associations

Ferricopiapit, Gips, Römerit, Shumwayit, Halotrichit, Krausit, Melanterit, Schwefel, Voltait, Rozenit

Name from

Hugo M. Rietveld (1932-2016), niederländischer Kristallograf

Author (Name, Year)

Anthony R. Kampf, Jiří Sejkora, Thomas Witzke, Jakub Plášil, Jiří Čejka, Barbara P. Nash und Joe Marty (2016)

External links

Kampf, A.R., Sejkora, J., Witzke, T., Plášil, J., Čejka, J., Nash, B.P., Marty, J. (2017): Rietveldite, Fe(UO2)(SO4)2(H2O)5, a new uranyl sulfate mineral from Giveaway-Simplot mine (Utah, USA), Willi Agatz mine (Saxony, Germany) and Jáchymov (Czech Republic). Journal of Geosciences 62, pp. 107-120

References

Kampf, A.R., Sejkora, J., Witzke, T., Plášil, J., Čejka, J., Nash, B.P. and Marty, J. (2016) Rietveldite, IMA 2016-081. CNMNC Newsletter No. 34, December 2016, page 1320; Mineralogical Magazine, 80, 1315–1321

Kampf, A.R., Sejkora, J., Witzke, T., Plášil, J., Čejka, J., Nash, B.P., Marty, J. (2017): Rietveldite, Fe(UO2)(SO4)2(H2O)5, a new uranyl sulfate mineral from Giveaway-Simplot mine (Utah, USA), Willi Agatz mine (Saxony, Germany) and Jáchymov (Czech Republic). Journal of Geosciences 62, pp. 107-120

Other languages

German

Rietveldit

English

Rietveldite

Russian

Ритвельдит

CNMNC (IMA)-Number

IMA 2016-081

CNMNC symbol

Symbol

Rvd

Locations with GPS information

IDs

GUSID (Global unique identifier short form) O-IPkf8sV027MEs727Ol1A
GUID (Global unique identifier) 910FE23B-2CFF-4D57-BB30-4B3BDBB3A5D4
Database ID 8277