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Wulffite

Pictures (2 Images total)

Wulffit
Views (Image: 1400055754): 541
Wulffit

Bildbreite: 1,5 mm, Fundort: Arsenatnaya Fumarole, zweiter Schlackenkegel, nördlicher Bruch, Große Spalteneruption, Tolbachik Vulkan, Kamchatka Oblast', Russland
Copyright: Stephan Wolfsried
Contribution: Hg 2014-05-14
Locality: Arsenatnaya Fumarole / zweiter Schlackenkegel / nördlicher Bruch / Große Spalteneruption (Great Fissure) / Tolbachik-Vulkan / Kamtschatka Oblast / Ferner Osten, Föderationskreis / Russland
Wulffit
Views (Image: 1609494254): 71
Wulffit

Vulkan Tolbachik, Kamtschatka; Bildbreite 5 mm.
Collection: Guy Heinen
Copyright: Guy Heinen
Contribution: guyhein 2021-01-01
Locality: Arsenatnaya Fumarole / zweiter Schlackenkegel / nördlicher Bruch / Große Spalteneruption (Great Fissure) / Tolbachik-Vulkan / Kamtschatka Oblast / Ferner Osten, Föderationskreis / Russland

Collectors Summary

Color dunkelgrün, smaragdgrün
Streak color hellgrün
Lustre Glasglanz
Hardness (Mohs) ~2.5
Cleavages vollkommen [001], (010)
Crystal System orthorhombisch, Pn21a

Chemism

Chem­ical formula

K3NaCu4O2(SO4)4

Chem­ical com­po­si­tion

Kupfer, Natrium, Kalium, Sauerstoff, Schwefel

Unit weight: 810.7216402 u; Number of atoms in the formula: 30

Info

Empirical formula:

K3NaCu4O2(SO4)4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

35.52

18

60.00

15.9994300

287.9897400
Sodium

Na

2.84

1

3.33

22.9897702

22.9897702
Sulfur

S

15.82

4

13.33

32.0655000

128.2620000
Potassium

K

14.47

3

10.00

39.0983100

117.2949300
Copper

Cu

31.35

4

13.33

63.5463000

254.1852000

Strunz 9th edi­tion incl. updates

7.B.

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
B: Sulfate (Selenate, etc.) mit weitere Anionen, ohne H2O

Lapis Clas­sifica­tion

VI/B.06-020

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
B: Wasserfreie Sulfate, mit fremden Anionen
6: Mittelgroße Kationen vorwiegend

IMA sta­tus

anerkannt - CNMNC Newsletter No. 17, October 2013

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

dunkelgrün, smaragdgrün

Streak color

hellgrün

Diaphane­ity (Trans­parency)

transparent

Lus­tre

Glasglanz

max. Birefrin­gence

0.133
Birefringence chart\! Wulffite title=Birefringence chart Wulffite

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 = 1.582(3)

RI value β

β = 1.610(3)

RI value γ / ε

γ = 1.715(3)

Ri mean

1.635

2V angle

Biaxial (+)

Crystallography

Crystal Sys­tem

orthorhombisch

Class (H-M)

mm2

Space Group number

33

Space Group

Pn21a

Cell param­e­ters a (Å)

14.2810

Cell param­e­ters b (Å)

4.9478

Cell param­e­ters c (Å)

24.113

Cell param­e­ters a/b or c/a

2.886

Cell param­e­ters c/b

4.873

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

4

Volumne (ų)

1703.813

Kristall struc­ture

Neuer Strukturtyp, verwandt mit Parawulffit; Struktur bestimmt

X-Ray Pow­der Diffrac­tion

9.27(100),
7.16(22),
3.125(16),
2.882(16),
2.780(33),
2.725(14),
2.472(20),
2.366(13)
XRD chart Wulffite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

~2.5

Density (g/cm³)

3.23(2) (gemessen), 3.19 (berechnet)

3.16 ( ρ calc. Mineralienatlas )

Cleav­ages

vollkommen [001], (010)

(Co-)Type locality

(Co-)Type locality

Russland/Ferner Osten, Föderationskreis/Kamtschatka Oblast/Tolbachik-Vulkan/Große Spalteneruption (Great Fissure)/nördlicher Bruch/zweiter Schlackenkegel/Arsenatnaya Fumarole

Type mate­r­ial

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

Col­lec­tion number of type mate­r­ial

4385/1

Preface

Name from

Benannt nach dem russischen Kristallograph Georgij Viktorovich Wulff (1863-1925), Professor für Mineralog & Kristallographie an der Universität Moskau, der ein früher Pionier der Studien von Röntgenbeugung an Kristallen war

Author (Name, Year)

Igor V. Pekov, Natalia V. Zubkova, Vasiliy O. Yapaskurt, Dmitriy I. Belakovskiy, Nikita V. Chukanov, Inna S. Lykova, Evgeny G. Sidorov und Dmitry Y. Pushcharovsky (2013)

References

Pekov, I.V., Zubkova, N.V., Yapaskurt, V.O., Belakovskiy, D.I., Chukanov, N.V., Lykova, I.S., Sidorov, E.G. und Pushcharovsky, D.Y. (2013) Wulffite, IMA 2013-035. CNMNC Newsletter No. 17, October 2013, page 2998; Mineralogical Magazine, 77, 2997 - 3005.

Igor V. Pekov, Natalia V. Zubkova and Vasiliy O. Yapaskurt - WULFFITE, K3NaCu4O2(SO4)4, AND PARAWULFFITE, K5Na3Cu8O4(SO4)8, two nes minerals from FUMAROLE SUBLIMATES OF THE TOLBACHIK VOLCANO, KAMCHATKA, RUSSIA - The Canadian Mineralogist 52, S. 699 - 716

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

Euchlorine

KNaCu32+(SO4)3O

monoklin : 2/m : C2/c

VI/B.06-010

Wulffite

K3NaCu4O2(SO4)4

orthorhombisch : mm2 : Pn21a

VI/B.06-020

Parawulffite

K5Na3Cu8O4(SO4)8

monoklin : 2/m : P2/c

VI/B.06-030

Other languages

German

Wulffit

English

Wulffite

Russian

Вульфит

IMA Number

IMA 2013-035

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

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