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Cobaltoblödite

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Cobaltoblödite
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Cobaltoblödite

Locality: Blue Lizard Mine, Chocolate Drop, Red Canyon, White Canyon District, San Juan Co., Utah, USA; Field of View: 2.1 mm; Group pf small, intergrown cobaltoblodite/manganoblodite crystals.
Collection: Jason B. Smith
Copyright: Jason B. Smith
Contribution: Stefan 2015-09-09
Locality: Blue Lizard Mine / Red Canyon / White Canyon District / San Juan Co. / Utah / USA

Collectors Summary

Color farblos
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 2 - 3
Fracture uneben
Solubility löslich in kalten H2O
Crystal System monoklin, P21/a

Chemism

Chem­ical formula

Na2Co(SO4)2·4H2O

Empir­ical formula (anal­y­sis)

Na1.96(Co0.36Mg0.30Mn0.17Ni0.12)Σ0.95S2.02O8·4H2O

Addi­tional chem. informa­tion

Blödit-Gruppe

Chem­ical com­po­si­tion

Kobalt, Natrium, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 354.779144799 u; Number of atoms in the formula: 24.93

Info

Empirical formula:

Na1.96(Co0.36Mg0.30Mn0.17Ni0.12)S2.02O8·4H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

2.27

8

32.09

1.0079470

8.0635760
Oxygen

O

54.12

12

48.13

15.9994300

191.9931600
Sodium

Na

12.70

1.96

7.86

22.9897702

45.0599496
Magnesium

Mg

2.06

0.3

1.20

24.3050600

7.2915180
Sulfur

S

18.26

2.02

8.10

32.0655000

64.7723100
Manganese

Mn

2.63

0.17

0.68

54.9380499

9.3394685
Cobalt

Co

5.98

0.36

1.44

58.9332009

21.2159523
Nickel

Ni

1.99

0.12

0.48

58.6934200

7.0432104

Strunz 9th edi­tion incl. updates

7.CC.50

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
C: Sulfate (Selenate, etc.) ohne weitere Anionen, mit H2O
C: Mit mittelgroßen und großen [Kationen]
50:Blödit-Gruppe

IMA sta­tus

anerkannt - Neue Mineralien Feb. 2013; CNMNC Newsletter No. 15

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

farblos

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent

Lus­tre

Glasglanz

RI value α / ω / n

α = 1.498 (2)

RI value β

β = 1.503(2)

RI value γ / ε

γ = 1.505(2)

2V angle

70(10)° (gemessen) 64° (berechnet)

Pleochro­ism

keiner

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/a

Cell param­e­ters a (Å)

11.147

Cell param­e­ters b (Å)

8.268

Cell param­e­ters c (Å)

5.5396

Cell param­e­ters a/b or c/a

1.348

Cell param­e­ters c/b

0.67

Cell param­e­ters α

90°

Cell param­e­ters β

100.517

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

501.972

Kristall struc­ture

Struktur bestimmt

X-Ray Pow­der Diffrac­tion

4.551(80), 4.269(50), 3.795(18), 3.339(43), 3.290(100), 3.258(58), 2.644(21), 2.296(22)
XRD chart Cobaltoblödite

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

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

2 - 3

Density (g/cm³)

2.349 (berechnet)

2.347 ( ρ calc. Mineralienatlas )

Frac­ture

uneben

Insta­bil­ity

löslich in kalten H2O

(Co-)Type locality

(Co-)Type locality

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

Type mate­r­ial

Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russland;
Museum Victoria, Melbourne, Australia

Col­lec­tion number of type mate­r­ial

4271/1 (Russland), M52196 (Australien)

Preface

Name from

Der Name leitet sich von der chemischen Zusammensetzung und der Zugrhörigkeit zur isomorphen Reihe Manganoblödit - Cobaltoblödit - Mn-Co-Ni-haltiger Blödit ab.

References

Kasatkin, A.V., Nestola, F., Pla´sˇil, J., Marty, J., Belakovskiy, D.I., Agakhanov, A.A., Mills, S.J., Lanza, A., Favaro, M. and Bianchin, S. (2013) Cobaltoblödite, IMA 2012- 059. CNMNC Newsletter No. 15, February 2013, page 5; Mineralogical Magazine, 77, 1-12.

Kasatkin, A.V., Nestola, F., Plášil, J., Marty, J., Belakovskiy, D.I., Agakhanov, A.A., Mills, S.J., Pedron, D., Lanza, A., Favaro, M., Bianchin, S., Lykova, I.S., Goliáš, V., Birch, W.D. - Manganoblödite, Na2Mn(SO4)2·4H2O, and cobaltoblödite, Na2Co(SO4)2·4H2O: two new members of the blödite group from the Blue Lizard mine, San Juan County, Utah, USA - Mineralogical Magazine, Vol.77(3) (2013), pp.367-383

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

Blödite

Na2Mg(SO4)2·4H2O

monoklin : 2/m : P21/a

7.CC.50

Changoite

Na2Zn[SO4]2·4H2O

monoklin : 2/m : P21/a

7.CC.50

Nickelblödite

Na2(Ni,Mg)(SO4)2·4H2O

monoklin : 2/m : P21/a

7.CC.50

Cobaltoblödite

Na2Co(SO4)2·4H2O

monoklin : 2/m : P21/a

7.CC.50

Manganoblödite

Na2Mn(SO4)2·4H2O

monoklin : 2/m : P21/a

7.CC.50

Other languages

German

Cobaltoblödit

English

Cobaltoblödite

Russian

кобальтоблёдит

Alternative Name

German

Kobaltoblödit

IMA Number

IMA 2012-059

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

German pages

 DeWikiPedia - search for: Cobaltoblödit
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Mineralogisch-Petrographisches-Institut Hamburg - search for: Cobaltoblödit

English pages

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Handbook-of-Mineralogy - search for: Cobaltoblödite
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RRUFF - References and PDF downloads - search for: Cobaltoblödite
American-Mineralogist-Crystal-Structure-Database - search for: Cobaltoblödite
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Russian pages

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Mineral Dealer

German pages

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Locations with GPS information