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Paralabuntsovite-Mg (Paralabuntsovit-Mg)

Pictures (1 Images total)

Paralabuntsovit-Mg
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Paralabuntsovit-Mg
orangebraune Kristtale von Paralabuntsovit-Mg, Westvaco Mine, Green River Basin, Sweetwater County, Wyoming, USA; BB ~ 2 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: USA/Wyoming/Sweetwater Co./Green River Formation/FMC Green River Trona Mine (Westvaco Mine)
Mineral: Paralabuntsovite-Mg
Image: 1592043836
License: Usage for Mineralienatlas project only
Paralabuntsovit-Mg

orangebraune Kristtale von Paralabuntsovit-Mg, Westvaco Mine, Green River Basin, Sweetwater County, Wyoming, USA; BB 2 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-06-13
Locality: FMC Green River Trona Mine (Westvaco Mine) / Green River Formation / Sweetwater Co. / Wyoming / USA

Collectors Summary

Lustre Glasglanz
Hardness (Mohs) 6
Crystal System monoklin, I2/m

Chemism

Chemical formula

Na8K8Mg8Ti16(Si4O12)8(O,OH)16·20-24H2O

Additional chem. information

Formel lt. CNMNC: Na8K8Mg4Ti16(Si4O12)8(O,OH)16·20-24H2O

Chemical composition

Magnesium, Natrium, Silicium, Titan, Kalium, Sauerstoff, Wasserstoff

Unit weight: 4548.0607576 u; Number of atoms in the formula: 254

Info

Empirical formula:

Na8K8Mg8Ti16(Si4O12)8(O0.75(OH)0.25)16·22H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.06

48

18.90

1.0079470

48.3814560
Oxygen

O

47.14

134

52.76

15.9994300

2,143.9236200
Sodium

Na

4.04

8

3.15

22.9897702

183.9181616
Magnesium

Mg

4.28

8

3.15

24.3050600

194.4404800
Silicon

Si

19.76

32

12.60

28.0855300

898.7369600
Potassium

K

6.88

8

3.15

39.0983100

312.7864800
Titanium

Ti

16.84

16

6.30

47.8671000

765.8736000

Strunz 9th edition incl. updates

9.CE.30

9: Silikate (Germanate)
C: Ringsilikate (Cyclosilikate)
E: [Si4O12]8- vierer-Einfachringe, ohne inselartige komplexe [Anionen]
30:Labuntsovit-Gruppe

Lapis Classification

VIII/E.07-130

VIII: SILIKATE
E: Ringsilikate
7: Viererringe [Si4O12] 8-; Labuntsovit-Gruppe

Dana 8th edition

60.01.03g.01

60: Cyclosilicates Cyclosilicate Four-Membered Rings
01: Cyclosilicates Cyclosilicate Four-Membered Rings as Titanosilicates
03g: Labuntsovite Group (Paralabuntsovite subgroup Monoclinic [I2/m])

IMA status

Mit Anerkennung der CNMNC umbenannt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Labuntsovite supergroup  ⇒ Paralabuntsovite group

Optical Properties

Diaphaneity (Transparency)

transparent, durchscheinend

Lustre

Glasglanz

max. Birefringence

0.114
Birefringence chart\! Paralabuntsovite-Mg title=Birefringence chart Paralabuntsovite-Mg

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.

2V angle

Biaxial (+)

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

I2/m

Cell parameters a (Å)

15.6

Cell parameters b (Å)

13.8

Cell parameters c (Å)

7.8

Cell parameters a/b or c/a

1.13

Cell parameters c/b

0.565

Cell parameters α

90°

Cell parameters β

117°

Cell parameters γ

90°

Z

1

Volume (ų)

1496.164

Physical Properties

Hardness (Mohs)

6

Density (g/cm³)

4.81 (berechnet)

5.047 ( ρ calc. Mineralienatlas )

(Co-)Type locality

(Co-)Type locality

USA/Wyoming/Sweetwater Co./Green River Formation/FMC Green River Trona Mine (Westvaco Mine)

Preface

Author (Name, Year)

Chukanov & Pekov & Khomyakov, 2002

References

European Journal of Mineralogy 14 (2002), 165

Bulletin of the Geological Society of America 64 (1958), 1614

American Mineralogist, Volume 87 (2002), 1731–1735 [Abstrakt]

IMA group assignments

Other languages

German

Paralabuntsovit-Mg

Spanish

Paralabuntsovita-Mg

English

Paralabuntsovite-Mg

French

Paralabuntsovite-Mg

Russian

Паралабунцовит-Mg

Alternative Name

English

Labuntsovite (of Milton et al.)

CNMNC (IMA)-Number

00-A

CNMNC symbol

Symbol

Plab-Mg

Locations with GPS information

IDs

GUSID (Global unique identifier short form) Z5F31bATg0e0rjW96UQgfw
GUID (Global unique identifier) D5779167-13B0-4783-B4AE-35BDE944207F
Database ID 2924