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Utahite (Utahit)

Pictures (7 Images total)

Utahit
Views (File:
1354564524
): 883
Utahit
Tafelige strahlige blaue Kristalle von der Typlokalität mit Cornwallit und Malachit, BB = <1 mm, Fundort: Centennial Eureka Mine, Tintic District, Juab Co., Utah, USA.
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A026355, Donator: eschuhbauer
Location: USA/Utah/Juab Co./Tintic District/Eureka/Centennial Eureka Mine
Mineral: Utahite
Image: 1354564524
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Utahit (SNr: A026355)

Tafelige strahlige blaue Kristalle von der Typlokalität mit Cornwallit und Malachit, BB = <1 mm, Fundort: Centennial Eureka Mine, Tintic District, Juab Co., Utah, USA.

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2012-12-03
Locality: Centennial Eureka Mine / Eureka / Tintic District / Juab Co. / Utah / USA
Utahit
Views (File:
1364919986
): 567
Utahit
Spießige blaue Kristalleauf Malachit und Quarz, BB = 3,8 mm; Fundort: Centennal Eureka Mine, Tintic District, Juab Co., Utah, USA.
Copyright: Bebo; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: B004086, Donator: eschuhbauer
Location: USA/Utah/Juab Co./Tintic District/Eureka/Centennial Eureka Mine
Mineral: Utahite
Image: 1364919986
Rating: 8 (votes: 2)
License: Usage for Mineralienatlas project only
Utahit (SNr: B004086)

Spießige blaue Kristalleauf Malachit und Quarz, BB = 3,8 mm; Fundort: Centennal Eureka Mine, Tintic District, Juab Co., Utah, USA.

Collection: Lithothek der Münchener Micromounter
Copyright: Bebo
Contribution: Münchener Micromounter 2013-04-02
Locality: Centennial Eureka Mine / Eureka / Tintic District / Juab Co. / Utah / USA
Utahit
Views (File:
1363020531
): 619
Utahit
Tafelige mattblaue Kristalle mit Malachit, BB = 1 mm, Fundort: Centennial Eureka Mine, Tintic District, Juab Co., Utah, USA.
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A005664, Donator: eschuhbauer
Location: USA/Utah/Juab Co./Tintic District/Eureka/Centennial Eureka Mine
Mineral: Malachite, Utahite
Image: 1363020531
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Utahit (SNr: A005664)

Tafelige mattblaue Kristalle mit Malachit, BB = 1 mm, Fundort: Centennial Eureka Mine, Tintic District, Juab Co., Utah, USA.

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2013-03-11
Locality: Centennial Eureka Mine / Eureka / Tintic District / Juab Co. / Utah / USA
Utahit
Views (File:
1371828239
): 647
Utahit
Langtafelige blaugrüne Kristallbüschel mit Malachit und Quarz, BB = 2,8 mm; Fundort: Centennal Eureka Mine, Tintic District, Juab Co., Utah, USA.
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A029817, Donator: Joe Marty
Location: USA/Utah/Juab Co./Tintic District/Eureka/Centennial Eureka Mine
Mineral: Utahite
Image: 1371828239
Rating: 6 (votes: 1)
License: Usage for Mineralienatlas project only
Utahit (SNr: A029817)

Langtafelige blaugrüne Kristallbüschel mit Malachit und Quarz, BB = 2,8 mm; Fundort: Centennal Eureka Mine, Tintic District, Juab Co., Utah, USA.

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2013-06-21
Locality: Centennial Eureka Mine / Eureka / Tintic District / Juab Co. / Utah / USA
Utahit
Views (File:
1295972264
): 804
Utahit
Blaue meißelförmige Kristalle von der Typlokalität; BB: 1,2 mm. Fundort: Centennial Eureka Mine, Tintic District, Juab Co., Utah, USA.
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A004896, Donator: Manfred Seitz
Location: USA/Utah/Juab Co./Tintic District/Eureka/Centennial Eureka Mine
Mineral: Utahite
Image: 1295972264
License: Usage for Mineralienatlas project only
Utahit (SNr: A004896)

Blaue meißelförmige Kristalle von der Typlokalität; BB: 1,2 mm. Fundort: Centennial Eureka Mine, Tintic District, Juab Co., Utah, USA.

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2011-01-25
Locality: Centennial Eureka Mine / Eureka / Tintic District / Juab Co. / Utah / USA
Utahit
Views (File:
1363020671
): 311
Utahit
Tafelige mattblaue Kristalle mit Malachit, BB = 1,7 mm, Fundort: Centennial Eureka Mine, Tintic District, Juab Co., Utah, USA.
Copyright: Hannes Osterhammer; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A005664, Donator: eschuhbauer
Location: USA/Utah/Juab Co./Tintic District/Eureka/Centennial Eureka Mine
Mineral: Utahite
Image: 1363020671
License: Usage for Mineralienatlas project only
Utahit (SNr: A005664)

Tafelige mattblaue Kristalle mit Malachit, BB = 1,7 mm, Fundort: Centennial Eureka Mine, Tintic District, Juab Co., Utah, USA.

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2013-03-11
Locality: Centennial Eureka Mine / Eureka / Tintic District / Juab Co. / Utah / USA

You find additional specimen at the Geolitho Museum

Collectors Summary

Color blass braun mit grün internen Reflektionen
Streak color blass blau
Hardness (Mohs) 4 - 5
Cleavages keine beobachtet
Fracture uneben für Einkristalle, Cluster neigen zum Bruch parallel zur Dehnung von Individuen, makroskopisch wurde weder Spaltung noch Bankungsfuge beobachtet
Crystal System triklin, P1

Chemism

Chemical formula

MgCu2+4Zn2Te6+3O14(OH)4∙6H2O

Chemical composition

Kupfer, Magnesium, Tellur, Zink, Sauerstoff, Wasserstoff

Unit weight: 1102.154912 u; Number of atoms in the formula: 35

Info

Empirical formula:

MgCu4Zn2Te3O14(OH)4∙6H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.55

6

17.14

1.0079470

6.0476820

Oxygen

O

27.58

19

54.29

15.9994300

303.9891700

Magnesium

Mg

2.21

1

2.86

24.3050600

24.3050600

Copper

Cu

23.06

4

11.43

63.5463000

254.1852000

Zinc

Zn

11.87

2

5.71

65.4094000

130.8188000

Tellurium

Te

34.73

3

8.57

127.6030000

382.8090000

Strunz 9th edition incl. updates

7.DE.25

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
D: Sulfate (Selenate, etc.) mit weitere Anionen, mit H2O
E: mit mittelgroßen Kationen; unklassifiziert
25:Utahit-Gruppe

Lapis Classification

IV/K.15-019

IV: OXIDE
K: Sulfite, Selenite, Tellurite
15: Tellurate mit [Te6+O6] 6--Gruppen und verwandte Strukturen

Classification by Hölzel

7.KD.100

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
K: Tellurates
D: Tellurates (+Anions +Water)

Dana 8th edition

33.02.08.01

33: Selenates and Tellurates
02: Selenates and Tellurates as A+ (B++)m XO6 Zq · x(H2O) where x can equal 0

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

blass braun mit grün internen Reflektionen

Streak color

blass blau

Diaphaneity (Transparency)

durchscheinend

RI value α / ω / n

1.84

RI value γ / ε

1.90

Ri mean

1.87~

2V angle

b ?

Crystallography

Crystal System

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell parameters a (Å)

5.6831(4)

Cell parameters b (Å)

8.7793(6)

Cell parameters c (Å)

9.9818(9)

Cell parameters a/b or c/a

0.647

Cell parameters c/b

1.137

Cell parameters α

95.415(7)

Cell parameters β

104.129(7)

Cell parameters γ

90.098(6)

Z

1

Volume (ų)

480.649

Crystal structure

fehlte in der Erstbeschreibung. Im Zuge der Neudefinition aufgeklärt, siehe Owen P. Missen, Stuart J. Mills, Michael S. Rumsey, Malcolm E. Back, Veronica E. Di Cecco, William D. Birch, John Spratt: The crystal structure and redefinition of utahite. Mineralogy and Petrology Volume 115, Issue 4 (2021) S. 477–486.

X-Ray Powder Diffraction

9.64(100),
8.74(50),
6.86(40),
6.17(40),
4.841(100),
3.822(40),
2.747(60),
2.600(40)

XRD chart Utahite

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

4 - 5

VHN (Hardness Vickers)

280 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

5.33

3.807 ( ρ calc. Mineralienatlas )

Cleavages

keine beobachtet

Fracture

uneben für Einkristalle, Cluster neigen zum Bruch parallel zur Dehnung von Individuen, makroskopisch wurde weder Spaltung noch Bankungsfuge beobachtet

Tenacity

spröde

Chemical Properties and Tests

Raman-Spektrum ist veröffentlicht, Owen P. Missen, Stuart J. Mills, Michael S. Rumsey, Malcolm E. Back, Veronica E. Di Cecco, William D. Birch, John Spratt: The crystal structure and redefinition of utahite. Mineralogy and Petrology Volume 115, Issue 4 (2021) S. 477–486.

Preface

Author (Name, Year)

Roberts & Stirling & Criddle & Jensen & Moffatt & Wilson, 1997

References

Mineralogical Record 28 (1997), 175

IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) – Newsletter 56 - Nomenclature/classification proposals approved in July 2020

Owen P. Missen, Stuart J. Mills, Michael S. Rumsey, Malcolm E. Back, Veronica E. Di Cecco, William D. Birch, John Spratt: The crystal structure and redefinition of utahite. Mineralogy and Petrology Volume 115, Issue 4 (2021) S. 477–486.

Other languages

German

Utahit

Spanish

Utahita

English

Utahite

French

Utahite

CNMNC (IMA)-Number

IMA 1995-039

CNMNC symbol

Symbol

Uta

Locations with GPS information

IDs

GUSID (Global unique identifier short form) ehVt8qMBakOO8O91alT9cg
GUID (Global unique identifier) F26D157A-01A3-436A-8EF0-EF756A54FD72
Database ID 4005