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Deloneite

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Deloneit
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Deloneit
hellgelbe Aggregate von Deloneit, Koashava Mine, Koashava, Chibiny, Kola, Russland; BB < 1 mm
Copyright: MinTreasure.com (Carsten Slotta); Contribution: openpit
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Chibiny (Khibiny)/Berg Koashva/Koashva Grube
Mineral: Deloneite
Image: 1580652018
License: Usage for Mineralienatlas project only
Deloneit

hellgelbe Aggregate von Deloneit, Koashava Mine, Koashava, Chibiny, Kola, Russland; BB < 1 mm
Copyright: MinTreasure.com (Carsten Slotta)
Contribution: openpit 2020-02-02
Locality: Koashva Grube / Berg Koashva / Chibiny (Khibiny) / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color leuchtend gelb
Streak color weiß
Hardness (Mohs) 5
Cleavages {100} und {001} 'uneben'
Fracture treppenartig
Solubility +++ 10% HCl, HNO3
Crystal System trigonal, P3

Chemism

Chemical formula

(Na0.5REE0.25Ca0.25)(Ca0.75REE0.25)Sr1.5(CaNa0.25REE0.25)(PO4)3F0.5(OH)0.5

Additional chem. information

neue Idealformel (alt: Na(Ca,Sr)3Ce[F|(PO4)3]) lt. IMA Subkomittee für Apatit-Nomenklatur, siehe Referenz

Chemical composition

Calcium, Natrium, Strontium, Fluor, Phosphor, Sauerstoff, Wasserstoff, REE

Unit weight: 639.747961375 u; Number of atoms in the formula: 21.5

Info

Empirical formula:

(Na0.5REE0.25Ca0.25)(Ca0.75REE0.25)Sr1.5(CaNa0.25REE0.25)(PO4)3F0.5(OH)0.5

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.08

0.5

2.33

1.0079470

0.5039735
Oxygen

O

31.26

12.5

58.14

15.9994300

199.9928750
Fluorine

F

1.48

0.5

2.33

18.9984033

9.4992016
Sodium

Na

2.70

0.75

3.49

22.9897702

17.2423277
Phosphorus

P

14.52

3

13.95

30.9737612

92.9212836
Calcium

Ca

12.53

2

9.30

40.0784000

80.1568000
Strontium

Sr

20.54

1.5

6.98

87.6210000

131.4315000
Rare Earth

REE

16.88

0.75

3.49

144.0000000

108.0000000

Analysis wt%

Na2O : 4.45, CaO : 14.77, SrO : 18.19, La2O3 : 8.12, Ce2O3 : 13.15, Pr2O3 : 1.13, Nd2O3 : 3.81, SiO2 : 0.74, P2O5 : 30.71, F : 2.03, Ln2O3 : 26.57 (Ref: Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva, 1904-1974 96)

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.39-100

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.680

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

Dana 8th edition

41.08.01.09

41: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
08: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen where (A)5 (XO4)3 Zq
01: Apatite Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Apatite Supergroup  ⇒ Belovite group

Optical Properties

Color

leuchtend gelb

Streak color

weiß

Diaphaneity (Transparency)

transparent

max. Birefringence

0.022
Birefringence chart\! Deloneite title=Birefringence chart Deloneite

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

1.682

RI value γ / ε

1.660

Ri mean

1.675

2V angle

Uniaxial (-)

Crystallography

Crystal System

trigonal

Class (H-M)

3

Space Group number

143

Space Group

P3

Cell parameters a (Å)

9.51

Cell parameters b (Å)

-

Cell parameters c (Å)

7.01

Cell parameters a/b or c/a

0.737

Cell parameters c/b

-

Z

2

Volume (ų)

549.047

X-Ray Powder Diffraction

3.51(30),
3.12(40),
2.84(100),
2.753(40),
1.967(30),
1.870(30),
1.795(20),
1.255(20)
XRD chart Deloneite

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)

3.92 - 3.95 / Durchschnittlich = 3.93

3.869 ( ρ calc. Mineralienatlas )

Cleavages

{100} und {001} 'uneben'

Fracture

treppenartig

Tenacity

spröde

Instability

+++ 10% HCl, HNO3

(Co-)Type locality

(Co-)Type locality

Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Chibiny (Khibiny)/Berg Koashva/Koashva Grube

Preface

Author (Name, Year)

Khomyakov & Lisitsin & Kulekova & Rastsvetaeva, 1996

References

Zapiski Vserossiskogo Mineralogicheskogo Obshchetstva 125 (1996) (5), 83

Pasero M, Kampf AR, Ferraris C, Pekov IV, Rakovan J, White TJ (2010) Nomenclature of the apatite supergroup minerals. European Journal of Mineralogy 22: 163-179

IMA group assignments

Other languages

German

Deloneit

Spanish

Deloneita

English

Deloneite

Russian

Делонеит

Russian

Делонеит-(Ce)

old name

German

Deloneit-(Ce)

English

Deloneite-(Ce)

French

Deloneite-(Ce)

Spanish

Deloneíta-(Ce)

CNMNC (IMA)-Number

IMA 1995-036

CNMNC symbol

Symbol

Dln

Locations with GPS information

IDs

GUSID (Global unique identifier short form) wtnzicMIt0OhOnYc1gcGbw
GUID (Global unique identifier) 89F3D9C2-08C3-43B7-A13A-761CD607066F
Database ID 909