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Stronadelphite

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Stronadelphit
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Stronadelphit
Aggregat von Stronadelphit, Kirovsky Mine, Kukisvumchorr, Chibiny, Kola, Russland; Kristalllänge rund 0,2 mm
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Chibiny (Khibiny)/Kukisvumchorr/Kirovsky Mine (Kirovskii Apatit Mine, Kirov)
Mineral: Stronadelphite
Image: 1580651145
License: Usage for Mineralienatlas project only
Stronadelphit

Aggregat von Stronadelphit, Kirovsky Mine, Kukisvumchorr, Chibiny, Kola, Russland; Kristalllänge rund 0,2 mm
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-02-02
Locality: Kirovsky Mine (Kirovskii Apatit Mine, Kirov) / Kukisvumchorr / Chibiny (Khibiny) / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color farblos, leichter Grünstich
Hardness (Mohs) 5
Cleavages keine
Fracture uneben
Crystal System hexagonal, P63/m

Chemism

Chemical formula

Sr5(PO4)3F

Chemical composition

Strontium, Fluor, Phosphor, Sauerstoff

Unit weight: 742.01784685 u; Number of atoms in the formula: 21

Info

Empirical formula:

Sr5(PO4)3F

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

25.87

12

57.14

15.9994300

191.9931600
Fluorine

F

2.56

1

4.76

18.9984033

18.9984033
Phosphorus

P

12.52

3

14.29

30.9737612

92.9212836
Strontium

Sr

59.04

5

23.81

87.6210000

438.1050000

Analysis wt%

P2O5 : 29.02, BaO : 2.40, SrO : 62.72, CaO : 2.49, Na2O : 0.10, F : 1.45, H2O : 0.54 (Ref: European Journal of Mineralogy 2010)

Strunz 9th edition incl. updates

8.BN.05

8: Phosphate, Arsenate, Vanadate
B: Phosphate, etc., mit weitere Anionen, ohne H2O
N: Mit ausschließlich [Kationen] (OH, etc.):RO4 = 0.33:1
05:Apatit-Gruppe

Lapis Classification

VII/B.39-085

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
B: Wasserfreie Phosphate, mit fremden Anionen F,Cl,O,OH
39: Mittelgroße und große Kationen: Mg-Cu-Zn und Ca-Na-K-Ba-Pb; Apatit-Gruppe

Classification by Hölzel

8.BO.120

8: PHOSPHATES ARSENATES VANADATES
B: Phosphates (+Anions -Water)
O: Apatite Supergroup
1: Apatites with Ca,Sr,Ba

IMA status

anerkannt Mai 2008

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Apatite Supergroup  ⇒ Apatite group

Optical Properties

Color

farblos, leichter Grünstich

Diaphaneity (Transparency)

transparent

max. Birefringence

0.007
Birefringence chart\! Stronadelphite title=Birefringence chart Stronadelphite

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

1.630

RI value γ / ε

1.623

Ri mean

1.638

2V angle

Uniaxial (-)

Crystallography

Crystal System

hexagonal

Class (H-M)

6/m

Space Group number

176

Space Group

P63/m

Cell parameters a (Å)

9.845

Cell parameters b (Å)

-

Cell parameters c (Å)

7.383

Cell parameters a/b or c/a

0.750

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

2

Volume (ų)

619.719

Crystal structure

aufgeklärt, siehe Pekov et al. , 2010

X-Ray Powder Diffraction

3.71(30), 3.21(40), 2.940(100), 2.823(35), 2.009(50), 1.955(45), 1.831(50), 1.500(30)
XRD chart Stronadelphite

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)

5

VHN (Hardness Vickers)

390 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.915 ber.

3.976 ( ρ calc. Mineralienatlas )

Cleavages

keine

Fracture

uneben

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Chibiny (Khibiny)/Kukisvumchorr/Kirovsky Mine (Kirovskii Apatit Mine, Kirov)/Belovitovoye

Type material

Fersman Mineralogical Museum, Moskau

Collection number of type material

3693/1.

Preface

Name from

nach Strontium und adelphos, dem griech. Wort für Bruder; damit wird seine Stellung als Sr-Analog von Fluorapatit ausgedrückt.

Author (Name, Year)

Igor V. Pekov et al., 2010

References

Igor V. Pekov, Sergey N. Britvin, Natalia V. Zubkova, Dmitry Yu. Pushcharovsky, Marco Pasero, Stefano Merlino: Stronadelphite, Sr5(PO4)3F, a new apatite-group mineral. Eur J Mineral 22 (2010) S.869-874.

Neue Mineralien - IMA WEB Seite Mai 2008

IMA group assignments

Other languages

German

Stronadelphit

English

Stronadelphite

Russian

Стронадельфит

CNMNC (IMA)-Number

IMA 2008-009

CNMNC symbol

Symbol

Sad

Locations with GPS information

IDs

GUSID (Global unique identifier short form) kFF6Z_yiFEK-ymWHYz_6iQ
GUID (Global unique identifier) 677A5190-A2FC-4214-BECA-6587633FFA89
Database ID 4939