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Wetherillite

Pictures (1 Images total)

grünlichgelber Wetherillit mit Hexahydrit
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grünlichgelber Wetherillit mit Hexahydrit
Blades of pale greenish-yellow wetherillite with hexahydrite. Travis Olds 2015; Field of view: 1.7 mm; Blue Lizard Mine, Red Canyon, White Canyon District, San Juan Co., Utah, USA
Copyright: Travis Olds; Contribution: Stefan
Location: USA/Utah/San Juan Co./White Canyon District/Red Canyon/Blue Lizard Mine
Mineral: Hexahydrite, Wetherillite
Image: 1475008259
Rating: 8 (votes: 1)
License: Usage for Mineralienatlas project only
grünlichgelber Wetherillit mit Hexahydrit

Blades of pale greenish-yellow wetherillite with hexahydrite. Travis Olds 2015; Field of view: 1.7 mm; Blue Lizard Mine, Red Canyon, White Canyon District, San Juan Co., Utah, USA

Copyright: Travis Olds
Contribution: Stefan 2016-09-27
Locality: Blue Lizard Mine / Red Canyon / White Canyon District / San Juan Co. / Utah / USA

Collectors Summary

Color blass grüngelb
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 2
Cleavages vollkommen {1011}, befriedigen {010}
Fracture muschelig, gekrümmt
Solubility +++ kaltem H2O
Crystal System monoklin, P21/c

Chemism

Chemical formula

Na2Mg(UO2)2(SO4)4·18H2O

Empirical formula (analysis)

Na1.98(Mg0.58Zn0.24Cu0.11Fe2+0.09)Σ1.02(U1.04O2)2(S0.98O4)4(H2O)18

Chemical composition

Magnesium, Natrium, Sauerstoff, Schwefel, Uran, Wasserstoff

Unit weight: 1352.392427836 u; Number of atoms in the formula: 83

Info

Empirical formula:

Na1.98(Mg0.58Zn0.24Cu0.11Fe0.09)(U1.04O2)2(S0.98O4)4(H2O)18

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

2.68

36

43.37

1.0079470

36.2860920

Oxygen

O

44.96

38

45.78

15.9994300

607.9783400

Sodium

Na

3.37

1.98

2.39

22.9897702

45.5197450

Magnesium

Mg

1.04

0.58

0.70

24.3050600

14.0969348

Sulfur

S

9.29

3.92

4.72

32.0655000

125.6967600

Iron

Fe

0.37

0.09

0.11

55.8452000

5.0260680

Copper

Cu

0.52

0.11

0.13

63.5463000

6.9900930

Zinc

Zn

1.16

0.24

0.29

65.4094000

15.6982560

Uranium

U

36.61

2.08

2.51

238.0289130

495.1001390

Strunz 9th edition incl. updates

7.EC.

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

Lapis Classification

VI/D.20-019

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

IMA status

anerkannt - (CNMNC) Newsletter 22 - Mineralogical Magazine, 2014, Vol. 78(5), pp. 1241-1248

Mineral status

anerkanntes Mineral

Optical Properties

Color

blass grüngelb

Streak color

weiß

Diaphaneity (Transparency)

transparent

Lustre

Glasglanz

max. Birefringence

0.021

Birefringence chart\! Wetherillite title=Birefringence chart Wetherillite

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

α = 1.498(1)

RI value β

β = 1.508(1)

RI value γ / ε

γ = 1.519(1)

Ri mean

1.508

2V angle

Biaxial (+) 88(1)° (gemessen) 87.9° (berechnet)

Orientation

Z = b, X ^ a = 54° in stumpfen β

Dispersion

r < v, merklich

Absorption

X < Y ≈ Z

Pleochroism

X = farblos, Y = blass gelb-grün, Z = blass gelb-grün

Optical Data Luminescence

Color LW-UV (365nm)

 

grün

Color SW-UV (254nm)

 

grün

Most Common Activator

(UO2)2+ (Uranyl-Ion) spezifisch

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/c

Cell parameters a (Å)

20.367(1)

Cell parameters b (Å)

6.8329(1)

Cell parameters c (Å)

12.903(3)

Cell parameters a/b or c/a

2.981

Cell parameters c/b

1.888

Cell parameters α

90°

Cell parameters β

107.879(10)º

Cell parameters γ

90°

Z

2

Volume (ų)

1708.937

Crystal structure

Neuer Strukturtyp, Struktur bestimmt

X-Ray Powder Diffraction

19.84(14), 9.74(100), 6.46(50), 6.01(48), 5.41(40), 4.80(64), 3.202(47), 3.038(34)

XRD chart Wetherillite

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

Physical Properties

Hardness (Mohs)

2

Density (g/cm³)

2.626 (berechnet)

2.628 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen {1011}, befriedigen {010}

Fracture

muschelig, gekrümmt

Instability

+++ kaltem H2O

(Co-)Type locality

(Co-)Type locality

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

Type material

Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, CA 90007, USA

Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russland

Collection number of type material

64164 und 64172 (USA); 4574/1 (Russland)

Preface

Generation conditions

sekundäre Alterungsphase

Associations

Bobcookit, Boyleit, Chalkanthit, Dietrichit, Gyps Hexahydrit, Johannit, Pickeringit und Rozenit

Author (Name, Year)

Anthony R. Kampf, Jakub Plášil, Anatoly V. Kasatkin and Joe Marty (2014)

References

Kampf, A.R., Plášil, J., Kasatkin, .V. and Marty, J. (2014) Whetherillite, IMA 2014-044. CNMNC Newsletter No. 22, October 2014, page 1243; Mineralogical Magazine, 78, 1241-1248.

Kampf, A.R., Plášil, J., Kasatkin, A.V., Marty, J. - Bobcookite, NaAl(UO2)2(SO4)4·18H2O and wetherillite, Na2Mg(UO2)2(SO4)4·18H2O, two new uranyl sulfate minerals from the Blue Lizard mine, San Juan County, Utah, USA. Mineralogical Magazine, 79 (2015), 695-714.

Other languages

German

Wetherillit

CNMNC Newsletter 22, the mineral name was typed incorrectly as whetherillite. The correct name is wetherillite.

English

Wetherillite

CNMNC Newsletter 22, the mineral name was typed incorrectly as whetherillite. The correct name is wetherillite.

CNMNC (IMA)-Number

IMA 2014-044

CNMNC symbol

Symbol

Wet

Locations with GPS information

IDs

GUSID (Global unique identifier short form) Choq_xuV6kGIYTdxz2UV7A
GUID (Global unique identifier) FF2A1A0A-951B-41EA-8861-3771CF6515EC
Database ID 7828