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Fermiite

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Fermiit
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Fermiit

gelbgrüne Kristalle von Fermiit, Blue Lizard Mine, Red Canyon, Utah, USA; BB < 1 mm

Copyright: Joy Desor
Contribution: openpit 2020-01-03
Locality: Blue Lizard Mine / Red Canyon / White Canyon District / San Juan Co. / Utah / USA

Collectors Summary

Color blass gelblichgrün
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 2.5
Cleavages keine
Fracture muschelig
Solubility +++ H2O; leicht zerfließend
Crystal System orthorhombisch, Pmn21
Morphology nach [010] gestreckte Prismen mit {010}, {001}, {001}, {110}, {011}, {011}, {101}, {101}

Chemism

Chem­ical formula

Na4(UO2)(SO4)3·3H2O

Empir­ical formula (anal­y­sis)

Na3.88(U1.05O2)(S0.99O4)3(H2O)3

Chem­ical com­po­si­tion

Natrium, Sauerstoff, Schwefel, Uran, Wasserstoff

Unit weight: 712.403194026 u; Number of atoms in the formula: 30.9

Info

Empirical formula:

Na3.88(U1.05O2)(S0.99O4)3(H2O)3

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.85

6

19.42

1.0079470

6.0476820

Oxygen

O

38.18

17

55.02

15.9994300

271.9903100

Sodium

Na

12.52

3.88

12.56

22.9897702

89.2003084

Sulfur

S

13.37

2.97

9.61

32.0655000

95.2345350

Uranium

U

35.08

1.05

3.40

238.0289130

249.9303587

Anal­y­sis wt%

Na2O : 17.10, UO3 : 42.77, SO3 : 33.85, H2O* : 7.70, Total : 101.42; WDX (Kampf et al. 2015); *berechnet

Strunz 9th edi­tion incl. updates

7.EC.

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

IMA sta­tus

von der CNMNC anerkanntes Mineral; CNMNC Newsletter No. 23, Februar 2015

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

blass gelblichgrün

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent

Lus­tre

Glasglanz

RI value α / ω / n

α = 1.527(1)

RI value β

β = 1.534(1)

RI value γ / ε

γ = 1.567(1)

2V angle

Biaxial (+) 50° (berechnet) 51(1) (gemessen)

Ori­enta­tion

X = b, Y = c, Z = a

Dis­per­sion

deutlich r < v

Absorp­tion

X = Y < Z

Pleochro­ism

X, Y = farblos, Z = blass grünlichgelb

Optical Data Luminescence

Lumi­nes­cence

hell grünlichweiße Floreszenz

Color LW-UV (365nm)

 

grün

LW-UV Intensity

stark

LW-UV Obser­va­tion Frequency

immer (spezifisch)

MW-UV (320nm)

 

grün

MW-UV Intensity

stark

MW-UV Obser­va­tion Frequency

immer (spezifisch)

Color SW-UV (254nm)

 

grün

SW-UV Intensity

stark

SW-UV Obser­va­tion Frequency

immer (spezifisch)

Most Common Acti­vator

(UO2)2+ (Uranyl-Ion) spezifisch

After­glow (Per­sistant Lumi­nes­cence)

keine Daten

Crystallography

Crystal Sys­tem

orthorhombisch

Class (H-M)

mm2

Space Group number

31

Space Group

Pmn21

Cell param­e­ters a (Å)

11.8407(12)

Cell param­e­ters b (Å)

7.8695(5)

Cell param­e­ters c (Å)

15.3255(19)

Cell param­e­ters a/b or c/a

1.505

Cell param­e­ters c/b

1.947

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

1428.036

Kristall struc­ture

strukturell verwandt mit Meisserit

X-Ray Pow­der Diffrac­tion

7.71(43), 7.01(100), 6.00(49), 4.70(42), 3.476(85), 3.336(55), 3.131(57), 2.762(46)

XRD chart Fermiite

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

Morphol­ogy

nach [010] gestreckte Prismen mit {010}, {001}, {001}, {110}, {011}, {011}, {101}, {101}

Crystals 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

2.5

Density (g/cm³)

3.23(2) (gemessen) 3.313 (berechnet)

3.313 ( ρ calc. Mineralienatlas )

Cleav­ages

keine

Frac­ture

muschelig

Tenac­ity

spröde

Radioac­tiv­ity

vorhanden, da uranhaltig

Insta­bil­ity

+++ H2O; leicht zerfließend

(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, Kalifornien

Fersman Mineralogical Museum of the Russian Academy of Sciences, Moskau

Col­lec­tion number of type mate­r­ial

65546, 65547 und 65548 (Los Angeles)

4607/1 (Moskau)

Preface

Asso­cia­tions

Oppenheimerit, Blödit, Bluelizardit, Chalkanthit, Epsomit, Gips, Hexahydrit, Kröhnkit, Manganoblödit, Sideronatrit, Tamarugit, Wetherillit

Name from

dem Experimentalphysiker Dr. Enrico Fermi (1901-1954)

Author (Name, Year)

Kampf, A.R., Plašil, J., Kasatkin, A.V., Marty, J., Čejka, J. (2015)

References

Kampf, A.R., Plašil, J., Kasatkin, A.V., Marty, J., Čejka, J. (2015): Fermiite, IMA 2014-068. CNMNC Newsletter No. 23, February 2015, page 54; Mineralogical Magazine, 79, pp. 51-58

Kampf, A.R., Plášil, J., Kasatkin, A.V., Marty, J., Čejka, J. - Fermiite, Na4(UO2)(SO4)3·3H2O and oppenheimerite, Na2(UO2)(SO4)2·3H2O, two new uranyl sulfate minerals from the Blue Lizard mine, San Juan County, Utah, USA. Mineralogical Magazine, 79 (2015), 1123-1142.

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

Fermiite

Na4(UO2)(SO4)3·3H2O

orthorhombisch : mm2 : Pmn21

7.EC.

Bobcookite

NaAl(UO2)2(SO4)4·18H2O

triklin : 1 : P1

7.EC.

Feynmanite

Na(UO2)(SO4)(OH)·3.5H2O

monoklin : 2/m : P2/n

7.EC.

Meisserite

Na5(UO2)(SO4)3(SO3OH)(H2O)

triklin : 1 : P1

7.EC.

Běhounekite

U(SO4)2(H2O)4

orthorhombisch : mmm : Pnma

7.EC.

Klaprothite

Na6(UO2)(SO4)4·4H2O

monoklin : 2/m : P21/c

7.EC.

Ottohahnite

Na6(UO2)2(SO4)5(H2O)7·1.5H2O

triklin : 1 : P1

7.EC.

Péligotite

Na6(UO2)(SO4)4·4H2O

triklin : 1 : P1

7.EC.

Mathesiusite

K5(UO2)4(SO4)4(VO5)·4H2O

tetragonal : 4/m : P4/n

7.EC.

Navrotskyite

K2Na10(UO2)3(SO4)9·2H2O

orthorhombisch : mmm : Pbcm

7.EC.

Belakovskiite

Na7(UO2)(SO4)4(SO3OH)(H2O)3

triklin : 1 : P1

7.EC.

Bluelizardite

Na7(UO2)(SO4)4Cl(H2O)2

monoklin : 2/m : C2/c

7.EC.

Geschieberite

K2(UO2)(SO4)2·2H2O

orthorhombisch : mm2 : Pna21

7.EC.

Adolfpateraite

K(UO2)(SO4)(OH)(H2O)

monoklin : 2/m : P21/c

7.EC.

Plášilite

Na(UO2)(SO4)(OH)·2H2O

monoklin : 2/m : P21/c

7.EC.

Seaborgite

LiK2Na6(UO2)(SO4)5(SO3OH)(H2O)

triklin : 1 : P1

7.EC.

Wetherillite

Na2Mg(UO2)2(SO4)4·18H2O

monoklin : 2/m : P21/c

7.EC.

Oppenheimerite

Na2(UO2)(SO4)2·3H2O

triklin : 1 : P1

7.EC.

Alwilkinsite-(Y)

Y(UO2)3(SO4)2O(OH)3(H2O)7·7H2O

orthorhombisch : 222 : P212121

7.EC.

Ammoniomathesiusite

(NH4)5(UO2)4(SO4)4(VO5)·4H2O

tetragonal : 4/m : P4/n

7.EC.

Pseudomeisserite-(NH4)

(NH4)2Na4[(UO2)2(SO4)5]·4H2O

monoklin : 2/m : P21/c

7.EC.

Zippeite

K3(UO2)4(SO4)2O3(OH)·3H2O

monoklin : 2 : C2

7.EC.05

Redcanyonite

(NH4)2Mn[(UO2)4O4(SO4)2](H2O)4

monoklin : 2/m : C2/m

7.EC.05

Zinczippeite

Zn(UO2)2(SO4)O2·3.5H2O

monoklin : 2/m : C2/m

7.EC.05

Natrozippeite

Na5(UO2)8(SO4)4O5(OH)3·12H2O

monoklin : 2/m : P21/n

7.EC.05

Cobaltzippeite

Co(UO2)2(SO4)O2·3.5H2O

monoklin : 2/m : C2/m

7.EC.05

Nickelzippeite

Ni2(UO2)6(SO4)3(OH)10·16H2O

monoklin : 2/m : C2/m

7.EC.05

Pseudojohannite

Cu6.5(UO2)8O8(SO4)4(OH)5·25H2O

triklin : 1 : P1

7.EC.05

Ammoniozippeite

(NH4)2[(UO2)2(SO4)O2]·H2O

orthorhombisch : mmm : Ccmb

7.EC.05

Magnesiozippeite

Mg(UO2)2(SO4)O2·3.5H2O

monoklin : 2/m : C2/m

7.EC.05

Rabejacite

Ca2[(UO2)4O4(SO4)2](H2O)8

triklin : 1 : P1

7.EC.10

Sejkoraite-(Y)

Y2(UO2)8O6(SO4)4(OH)2·26H2O

triklin : 1 : P1

7.EC.15

Marécottite

Mg3[(UO2)4O3(OH)(SO4)2]2(H2O)28

triklin : 1 : P1

7.EC.15

Plavnoite

K0.8Mn0.6[(UO2)2O2(SO4)]·3.5H2O

monoklin : 2/m : C2/c

7.EC.20

Other languages

German

Fermiit

English

Fermiite

Russian

Фермиит

IMA Number

IMA 2014-068

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

German pages

DeWikiPedia - search for: Fermiit
Google-Bilder-Suche - search for: Fermiit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Fermiit

English pages

Mindat - search for: Fermiite
Webmineral - search for:Fermiite
Handbook-of-Mineralogy - search for: Fermiite
RRUFF - Raman, XRD and other mineral data - search for: Fermiite
RRUFF - References and PDF downloads - search for: Fermiite
American-Mineralogist-Crystal-Structure-Database - search for: Fermiite
Athena - search for: Fermiite

Russian pages

Webmineral.ru - search for: Фермиит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Fermiit
Crystal-Treasure.com - search for: Fermiit
Bosse - search for: Fermiit

Locations with GPS information