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Olgite

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Olgit
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Olgit
hellgelber Kristall von Olgit in Glasampulle, Rasvumchorr, Chibiny, Kola, Russland; BB < 1 mm, analysiert
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Chibiny (Khibiny)/Rasvumchorr
Mineral: Olgite
Image: 1581180612
License: Usage for Mineralienatlas project only
Olgit

hellgelber Kristall von Olgit in Glasampulle, Rasvumchorr, Chibiny, Kola, Russland; BB < 1 mm, analysiert

Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-02-08
Locality: Rasvumchorr / Chibiny (Khibiny) / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color blau, blau grün
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 4.75
Solubility +++ Säuren, - H2O
Crystal System trigonal, P3m1

Additional information / Summary

Olgit soll zukünftig der Name für eine Serie von Minerlien sein. (Neue Mineralien, IMA-WEB-Seite April 2008)

Chemism

Chemical formula

(Ba,Sr)(Na,Sr,REE)2Na(PO4)2

Chemical composition

Barium, Natrium, Strontium, Phosphor, Sauerstoff, REE

Unit weight: 446.79408184 u; Number of atoms in the formula: 14

Info

Empirical formula:

(Ba0.75Sr0.25)(Na0.6Sr0.3REE0.1)2Na(PO4)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

28.65

8

57.14

15.9994300

127.9954400

Sodium

Na

11.32

2.2

15.71

22.9897702

50.5774944

Phosphorus

P

13.86

2

14.29

30.9737612

61.9475224

Strontium

Sr

16.67

0.85

6.07

87.6210000

74.4778500

Barium

Ba

23.05

0.75

5.36

137.3277000

102.9957750

Rare Earth

REE

6.45

0.2

1.43

144.0000000

28.8000000

Analysis wt%

Ø Na2O : 14.40, K2O : 0.50, SrO : 21.00, BaO : 26.10, CaO : 0.70, MnO : 0.60, La2O3 : 4.20, Ce2O3 : 0.70, P2O5 : 31.80, Ln2O3 : 5.00

Strunz 9th edition incl. updates

8.AC.40

8: Phosphate, Arsenate, Vanadate
A: Phosphate, etc., ohne weitere Anionen, ohne H2O
C: Mit mittelgroßen und großen [Kationen]
40:Olgit-Gruppe

Lapis Classification

VII/A.12-060

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
A: Wasserfreie Phosphate [PO4] 3-, ohne fremde Anionen
12: Sehr große Kationen: Ca-Na-K, SE, Bi u.a.

Classification by Hölzel

8.AD.100

8: PHOSPHATES ARSENATES VANADATES
A: Phosphates (-anions -water)
D: Phosphates, C large

Dana 8th edition

38.01.03.01

38: Anhydrous Phosphates, etc
01: Anhydrous Phosphates, etc A+ B++ XO4

Mineral status

anerkanntes Mineral

Optical Properties

Color

blau, blau grün

Streak color

weiß

Diaphaneity (Transparency)

durchscheinend

Lustre

Glasglanz

max. Birefringence

0.004

Birefringence chart\! Olgite title=Birefringence chart Olgite

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

1.623

RI value γ / ε

1.619

Ri mean

1.622

2V angle

Uniaxial (-)

Optical Data Luminescence

Color SW-UV (254nm)

 

orange

Most Common Activator

Mn2+

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

trigonal

Class (H-M)

3m

Space Group number

164

Space Group

P3m1

Cell parameters a (Å)

5.558

Cell parameters b (Å)

-

Cell parameters c (Å)

7.037

Cell parameters a/b or c/a

1.266

Cell parameters c/b

-

Z

1

Volume (ų)

188.259

X-Ray Powder Diffraction

6.99(30),
3.97(40),
2.842(100),
2.763(100),
2.273(30),
1.982(60),
1.647(30),
1.607(40)

XRD chart Olgite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

4.75

VHN (Hardness Vickers)

343

Density (g/cm³)

3.94

3.941 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren, - H2O

Preface

Name from

Olga Anisimovne-Vorobiova (1902-1974), russischer Mineraloge

Author (Name, Year)

Khomyakov & Semenov & Shumyatskaya & Timoshenkov & Laputina & Smolyani

References

Khomyakov, A.P., Semenov, E.I., Shumyatskaya, N.G., Timoshenkov, I.M., Laputina, I.P., Smol’yaninova, N.N. (1980): Olgite, Na(Sr,Ba)PO4 - a new mineral. Zapiski VMO, 109, 3, 347-351 (in Russian).

Sokolova, E.V., Egorov-Tismenko, Yu.K., Yamnova, N.A., Simonov, M.A. (1984): The crystal structure of olgite, Na(Sr0.52Ba0.48)(Sr0.58Na0.42)(Na0.81Sr0.19)[PO3.40] [P0.76O3.88]. Kristallografiya, 29, 6, 1079-1083 (in Russisch).

Canadian Mineralogist 43 (2005), 1521

Neue Mineralien, IMA-WEB-Seite April 2008

Other languages

German

Olgit

Spanish

Olgita

English

Olgite

Russian

Ольгит

Traditional Chinese

磷鈉鍶石

Simplified Chinese

磷钠锶石

Alternative Name

German

Olgit-(Sr)

French

Olgite-(Sr)

English

Olgite-(Sr)

CNMNC (IMA)-Number

IMA 1979-027

CNMNC symbol

Symbol

Olg

Locations with GPS information

IDs

GUSID (Global unique identifier short form) TyrXnJnPNkui1bzSUKwCHg
GUID (Global unique identifier) 9CD72A4F-CF99-4B36-A2D5-BCD250AC021E
Database ID 2815