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Umohoite

Pictures (5 Images total)

Calcurmolit mit Umohoit und Uranophan
Views (Image: 1403596107): 1401
Calcurmolit mit Umohoit und Uranophan

Bildbreite: 3 mm; Fundort: Rabejac, Lodève, Hérault, Languedoc-Roussillon, Frankreich

Copyright: Stephan Wolfsried
Contribution: Hg 2014-06-24
Locality: Rabejac / Le Puech / Lodève, Arrondissement / Hérault, Département / Okzitanien (Occitanie), Region / Frankreich
Umohoit (grün) mit Iriginit (gelb)
Views (Image: 1230498225): 2088
Umohoit (grün) mit Iriginit (gelb)

Fundort: Kyzylsai, Chu-Ili-Massiv, Balqash, Qaraghandy oblysy (Karaganda), Kasachstan; Größe: 40x35x10 mm

Copyright: Pavel M. Kartashov
Contribution: slugslayer 2008-12-28
Locality: Kyzylsai / Chu-Ili-Massiv / Balqash / Qaraghandy oblysy (Karaganda) / Kasachstan
Iriginit (gelb) mit Umohoit (grün)
Views (Image: 1243761686): 1493
Iriginit (gelb) mit Umohoit (grün)

Fundort: Kyzylsai, Chu-Ili-Massiv, Balqash, Qaraghandy oblysy (Karaganda), Kasachstan; Größe: 40x35x10 mm

Copyright: Pavel M. Kartashov
Contribution: slugslayer 2009-05-31
Locality: Kyzylsai / Chu-Ili-Massiv / Balqash / Qaraghandy oblysy (Karaganda) / Kasachstan
Ziegelroter, korallenartig ausgebildeter Umohoit, zusammen mit Uranospinit
Views (Image: 1553071942): 234
Ziegelroter, korallenartig ausgebildeter Umohoit, zusammen mit Uranospinit (SNr: A009143)

von Frankreich/Okzitanien (Occitanie), Region/Hérault, Département/Lodève/Rabejac, BB = 5 mm

Collection: Lithothek der Münchener Micromounter
Copyright: husi
Contribution: Münchener Micromounter 2019-03-20
Locality: Rabejac / Le Puech / Lodève, Arrondissement / Hérault, Département / Okzitanien (Occitanie), Region / Frankreich
Umohoit
Views (Image: 1593715309): 157
Umohoit

Grüner Umohoit von Kyzylsai, Chu-Ili-Massiv, Kasachstan; BB 21 mm.

Collection: weirdo
Copyright: weirdo
Contribution: Lynx 2020-07-02
Locality: Kyzylsai / Chu-Ili-Massiv / Balqash / Qaraghandy oblysy (Karaganda) / Kasachstan

Collectors Summary

Color bläulichschwarz, dunkelgrün, schwarz
Streak color blau grau
Hardness (Mohs) 2
Solubility - H2O
Crystal System triklin, P1

Chemism

Chem­ical formula

[UO2|MoO4]·2H2O

Chem­ical com­po­si­tion

Molybdän, Sauerstoff, Uran, Wasserstoff

Unit weight: 465.998141 u; Number of atoms in the formula: 14

Info

Empirical formula:

[UO2MoO4]·2H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.87

4

28.57

1.0079470

4.0317880

Oxygen

O

27.47

8

57.14

15.9994300

127.9954400

Molybdenum

Mo

20.59

1

7.14

95.9420000

95.9420000

Uranium

U

51.08

1

7.14

238.0289130

238.0289130

Anal­y­sis wt%

UO3 : 61.55, MoO3 : 30.76, H2O : 7.70 (Ref: berechnet)

Strunz 9th edi­tion incl. updates

4.GC.10

4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate)
G: Uranylhydroxide
C: mit zusätzlichen [Kationen]; mit UO2(O,OH)6 hexagonalen Polyedern
10:Umohoit-Gruppe

Lapis Clas­sifica­tion

VI/G.05-020

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
G: Molybdate [MoO4] 2- und Wolframate [WO4] 2-
5: Uranylmolybdate mit [UO2] 2+-[MoO4] 2-/[Mo2O7] 2- und verwandte Verbindungen

Clas­sifica­tion by Hölzel

7.HC.100

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
H: Uranyl-Molybdates, Wolframates
C: Uranyl-Molybdates, Wolframates (-Anions +Water)

IMA sta­tus

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

bläulichschwarz, dunkelgrün, schwarz

Streak color

blau grau

Diaphane­ity (Trans­parency)

opak

max. Birefrin­gence

0.25~

Birefringence chart\! Umohoite title=Birefringence chart Umohoite

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

1.66

RI value β

1.831

RI value γ / ε

1.915

Ri mean

1.802

2V angle

Biaxial (-) 65°

Crystallography

Crystal Sys­tem

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell param­e­ters a (Å)

6.375

Cell param­e­ters b (Å)

7.529

Cell param­e­ters c (Å)

14.628

Cell param­e­ters a/b or c/a

0.847

Cell param­e­ters c/b

1.943

Cell param­e­ters α

82.63

Cell param­e­ters β

85.95

Cell param­e­ters γ

89.92

Z

4

Volumne (ų)

694.545

X-Ray Pow­der Diffrac­tion

14.10(20),
7.1(100),
4.74(20),
3.22(50),
3.18(20),
3.03(20),
2.84(20),
2.04(20)

XRD chart Umohoite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

2

VHN (Hard­ness Vick­ers)

32 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

4.55 - 4.93 / Durchschnittlich = 4.74

4.456 ( ρ calc. Mineralienatlas )

Insta­bil­ity

- H2O

(Co-)Type locality

(Co-)Type locality

USA/Utah/Piute Co./Marysvale District/Freedom No. 2 Mine

Preface

Author (Name, Year)

Brophy & Kerr, 1953

Safety Instructions

Industrial chemicals are often present in powder form and therefore often contain much higher dangers than natural, crystalline substances. These hazard statements refer to the classification of industrially used chemical compounds that may also occur in this natural mineral. The hazard classification makes no claim to completeness.




Safety classes: Ionizing radiation: Radioaktiv

References

Handbook of Mineralogy (Anthony et al.), 5 (2003), 723

Other languages

German

Umohoit

English

Umohoite

French

Umohoite

Spanish

Umohoíta

Russian

Умохоит

Japanese

ウモホアイト

CNMNC symbol

Symbol

Umo

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

German pages

DeWikiPedia - search for: Umohoit
Google-Bilder-Suche - search for: Umohoit
Mineralienatlas.de (Forum) - search for: Umohoit

English pages

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

Russian pages

Webmineral.ru - search for: Умохоит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Umohoit
Crystal-Treasure.com - search for: Umohoit
Bosse - search for: Umohoit
Edelsteine Neuburg - Gundolf Fischer - search for: Umohoit

Locations with GPS information