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Delhayelite

Pictures (11 Images total)

graue Delhayelith-Leisten in braunem Hisingerit
Views (File:
1241289702
): 2779
graue Delhayelith-Leisten in braunem Hisingerit
Größe: 75x30x25 mm; Fundort: Tsentralnyi, Inyl'chek, Issyk-Kulskaya Oblast, Kirgistan
Copyright: Pavel M. Kartashov; Contribution: Philip Blümner
Location: Kirgistan/Issyk-Kulskaya Oblast/Inyl'chek/Trudovoye/Tsentral'nyi (Centralnyi)
Mineral: Delhayelite
Image: 1241289702
Rating: 6.5 (votes: 2)
License: Usage for Mineralienatlas project only
graue Delhayelith-Leisten in braunem Hisingerit

Größe: 75x30x25 mm; Fundort: Tsentralnyi, Inyl'chek, Issyk-Kulskaya Oblast, Kirgistan
Copyright: Pavel M. Kartashov
Contribution: Philip Blümner 2009-05-02
Locality: Tsentral'nyi (Centralnyi) / Trudovoye / Inyl'chek / Issyk-Kulskaya Oblast / Kirgistan
Delhayelith-Tafeln
Views (File:
1241297862
): 1100
Delhayelith-Tafeln
Bildbreite: 14 mm; Fundort: Yukspor, Khibiny, Kola, Russland
Copyright: Pavel M. Kartashov; Contribution: Philip Blümner
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Chibiny (Khibiny)/Yukspor
Mineral: Delhayelite
Image: 1241297862
License: Usage for Mineralienatlas project only
Delhayelith-Tafeln

Bildbreite: 14 mm; Fundort: Yukspor, Khibiny, Kola, Russland
Copyright: Pavel M. Kartashov
Contribution: Philip Blümner 2009-05-02
Locality: Yukspor / Chibiny (Khibiny) / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland
Delhayelith
Views (File:
1360587594
): 749
Delhayelith
Bildbreite: 4 mm, Fundort: Rasvumchorr, Chibiny-Massiv, Kola-Halbinsel, Russland
Copyright: Luigi Chiappino; Contribution: thdun5
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Chibiny (Khibiny)/Rasvumchorr
Mineral: Delhayelite
Image: 1360587594
License: Usage for Mineralienatlas project only
Delhayelith

Bildbreite: 4 mm, Fundort: Rasvumchorr, Chibiny-Massiv, Kola-Halbinsel, Russland
Copyright: Luigi Chiappino
Contribution: thdun5 2013-02-11
Locality: Rasvumchorr / Chibiny (Khibiny) / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland
Delhayelit, Eudialyt
Views (File:
1360622505
): 985
Delhayelit, Eudialyt
Delhayelit (weiß) mit Eudialyt (rot), Größe: 2,7 x 2,5 x 1,5 cm, Fundort: Kirovskii-Apatit-Mine, Kukisvumchorr, Khibiny, Kola-Halbinsel, Murmansk, Russland
Copyright: Maggie Wilson; Contribution: thdun5
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Chibiny (Khibiny)/Kukisvumchorr/Kirovsky Mine (Kirovskii Apatit Mine, Kirov)
Mineral: Delhayelite, Eudialyte
Image: 1360622505
License: Usage for Mineralienatlas project only
Delhayelit, Eudialyt

Delhayelit (weiß) mit Eudialyt (rot), Größe: 2,7 x 2,5 x 1,5 cm, Fundort: Kirovskii-Apatit-Mine, Kukisvumchorr, Khibiny, Kola-Halbinsel, Murmansk, Russland
Copyright: Maggie Wilson
Contribution: thdun5 2013-02-11
Locality: Kirovsky Mine (Kirovskii Apatit Mine, Kirov) / Kukisvumchorr / Chibiny (Khibiny) / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland
Delhayelit
Views (File:
1667404979
): 38
Delhayelit
Etwa 30 mm x 15 mm große Delhayelitstufe von Rasvumtchorr auf der Halbinsel Kola in Russland.
Copyright: Klaus Schäfer; Contribution: Klaus Schäfer
Collection: Klaus Schäfer, Collection number: Kola-Delh-2-1-1
Location: Russland/Nordwestrussland, Föderationskreis/Murmansk, Oblast/Kola-Halbinsel/Chibiny (Khibiny)/Rasvumchorr
Mineral: Delhayelite
Image: 1667404979
License: Usage for Mineralienatlas project only
Delhayelit (SNr: Kola-Delh-2-1-1)

Etwa 30 mm x 15 mm große Delhayelitstufe von Rasvumtchorr auf der Halbinsel Kola in Russland.
Collection: Klaus Schäfer
Copyright: Klaus Schäfer
Contribution: Klaus Schäfer 2022-11-02
Locality: Rasvumchorr / Chibiny (Khibiny) / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color farblos, weiß, grünlich grau, hellgrau grün
Streak color weiß
Lustre Matt
Hardness (Mohs) 4.5
Solubility +++ Säuren, + CH3COOH
Crystal System orthorhombisch, Pmmn
Morphology plattige bis spätige Kristalle

Chemism

Chemical formula

K7Na3Ca5Al2Si14O38F4Cl2

Chemical composition

Aluminium, Calcium, Chlor, Natrium, Silicium, Fluor, Kalium, Sauerstoff

Unit weight: 1745.08833 u; Number of atoms in the formula: 75

Info

Empirical formula:

K7Na3Ca5Al2Si14O38F4Cl2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

34.84

38

50.67

15.9994300

607.9783400
Fluorine

F

4.35

4

5.33

18.9984033

75.9936130
Sodium

Na

3.95

3

4.00

22.9897702

68.9693106
Aluminium

Al

3.09

2

2.67

26.9815382

53.9630764
Silicon

Si

22.53

14

18.67

28.0855300

393.1974200
Chlorine

Cl

4.06

2

2.67

35.4532000

70.9064000
Potassium

K

15.68

7

9.33

39.0983100

273.6881700
Calcium

Ca

11.48

5

6.67

40.0784000

200.3920000

Analysis wt%

SiO2 : 46.34, Al2O3 : 6.59, Fe2O3 : 0.54, CaO : 14.52, Na2O : 6.52, K2O : 18.37, Cl : 3.42, F : 2.80, H2O : 1.91 (Ref: New Data on Minerals, (Monatshefte) 2005)

Strunz 9th edition incl. updates

9.EB.10

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
B: Doppelnetze mit 4- und 6 beteiligten Ringen
10:Delhayelith-Gruppe

Lapis Classification

VIII/H.38-030

VIII: SILIKATE
H: Schichtsilikate
38: Schichtsilikate mit Tetraeder-Doppelschichten und verwandte Strukturen

Classification by Hölzel

9.ES.110

9: SILICATES
E: Phyllosilicates
S: Phyllosilicates with tetrahedral Doublelayers

Dana 8th edition

72.05.01.04

72: Phyllosilicates Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings
05: Phyllosilicates Phyllosilicate Two-Dimensional Infinite Sheets with Other Than Six-Membered Rings with corrugated and complex layers
01: Rhodesite group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, weiß, grünlich grau, hellgrau grün

Streak color

weiß

Diaphaneity (Transparency)

semitransparent

Lustre

Matt

max. Birefringence

0.003
Birefringence chart\! Delhayelite title=Birefringence chart Delhayelite

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

1.531

RI value β

1.532

RI value γ / ε

1.534

Ri mean

1.532

2V angle

Biaxial (-) 83°

Orientation

X = a, Y = c, Z = b

Optical Data Luminescence

Color LW-UV (365nm)

  

orange

LW-UV Intensity

stark

Color SW-UV (254nm)

  

orange

SW-UV Intensity

mittel

Most Common Activator

S2-

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

59

Space Group

Pmmn

Cell parameters a (Å)

6.52

Cell parameters b (Å)

24.83

Cell parameters c (Å)

7.07

Cell parameters a/b or c/a

0.263

Cell parameters c/b

0.285

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

1

Volume (ų)

1144.574

X-Ray Powder Diffraction

12.30(30),
6.158(20),
3.482(10),
3.078(100),
2.961(10),
2.788(10),
1.760(10),
1.541(10)
XRD chart Delhayelite

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

Morphology

plattige bis spätige Kristalle

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

4.5

VHN (Hardness Vickers)

280 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.6

2.532 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren, + CH3COOH

(Co-)Type locality

(Co-)Type locality

Demokratische Republik Kongo/Nord-Kivu, Provinz/Goma/Nyiragongo-Vulkan/Mt. Saheru

Preface

Occurrences

In Nephelin-Pegmatiten (KOla), in Kalsilit-Melilit-Nephelinit-Laven (Mt. Shaheru, Zaire), Alkaligesteinen (Mont Saint Hilaire, Canada)

Associations

Mineralien der Alkaligesteine

Name from

Fernard Delhaye (1880-1946)

Author (Name, Year)

Sahama & Hytönen, 1959

References

Rendiconti, Societa Italiana di Mineralogia e Petrologia 26 (1970), 63

Other languages

Delhayelit

Spanish

Delhayelita

English

Delhayelite

French

Delhayelite

Russian

Дельхайелит

Alternative Name

German

Delhayelith

CNMNC symbol

Symbol

Dhy

Locations with GPS information

IDs

GUSID (Global unique identifier short form) wZnPAXNM-kOvpljyBR5i1g
GUID (Global unique identifier) 01CF99C1-4C73-43FA-AFA6-58F2051E62D6
Database ID 904