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Davyne

Pictures (12 Images total)

Davyn
Views (Image: 1303643319): 2084
Davyn

Größe: 1,5 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien

Copyright: Matteo Chinellato
Contribution: Hg 2011-04-24
Locality: Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Davyn
Views (Image: 1318410802): 1694
Davyn (SNr: A017819)

Bellerberg; BB: 2,5 mm; säulige farblose Kristalle, als Begleiter Augit und Granat

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2011-10-12
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Davyn
Views (Image: 1286137769): 709
Davyn

Größe: 4,75 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien

Copyright: Matteo Chinellato
Contribution: Hg 2010-10-03
Locality: Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Davyn
Views (Image: 1393927894): 1237
Davyn

Bellerberg, Ettringen, Eifel, Rheinland-Pfalz, Deutschland. Bildbreite 1 mm

Collection: Ulrich Baumgärtl
Copyright: Ulrich Baumgärtl
Contribution: Ulrich Baumgärtl 2014-03-04
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Davyn
Views (Image: 1303643271): 665
Davyn

Größe: 0,95 mm; Fundort: Monte Somma, Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien

Copyright: Matteo Chinellato
Contribution: Hg 2011-04-24
Locality: Monte Somma / Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien
Davyn
Views (Image: 1286700885): 1117
Davyn

Größe: 91x86 mm; Fundort: Somma-Vesuv-Komplex, Neapel, Kampanien (Campania), Italien

Copyright: Rock Currier
Contribution: slugslayer 2010-10-10
Locality: Somma-Vesuv-Komplex / Neapel, Provinz / Kampanien (Campania), Region / Italien

Collectors Summary

Color farblos, weiß
Streak color weiß
Hardness (Mohs) 6
Solubility +++ Säuren
Crystal System hexagonal, P63

Chemism

Chem­ical formula

[(Na,K)6(SO4)0.5Cl][Ca2Cl2][(Si6Al6O24)]

Chem­ical com­po­si­tion

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

Unit weight: 1111.0381701 u; Number of atoms in the formula: 49.5

Info

Empirical formula:

[(Na0.75K0.25)6(SO4)0.5Cl][Ca2Cl2][(Si6Al6O24)]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

37.44

26

52.53

15.9994300

415.9851800

Sodium

Na

9.31

4.5

9.09

22.9897702

103.4539659

Aluminium

Al

14.57

6

12.12

26.9815382

161.8892292

Silicon

Si

15.17

6

12.12

28.0855300

168.5131800

Sulfur

S

1.44

0.5

1.01

32.0655000

16.0327500

Chlorine

Cl

9.57

3

6.06

35.4532000

106.3596000

Potassium

K

5.28

1.5

3.03

39.0983100

58.6474650

Calcium

Ca

7.21

2

4.04

40.0784000

80.1568000

Anal­y­sis wt%

SiO2 : 32.33, Al2O3 : 28.98, CaO : 10.36, Na2O : 11.01, K2O : 7.11, CO2 : 1.26, SO3 : 4.11, Cl : 6.25 (Ref: Zeitschrift ür Kristallographie 1878)

Strunz 9th edi­tion incl. updates

9.FB.05

9: Silikate (Germanate)
F: Gerüstsilikate (Tektosilikate) ohne zeolithisches H2O
B: Gerüstsilikate (Tektosilicates) mit weiteren [Anionen]
05:Cancrinit-Gruppe

Lapis Clas­sifica­tion

VIII/J.09-020

VIII: SILIKATE
J: Gerüstsilikate (mit Zeolithen)
9: Mit tetraederfremden Anionen; Cancrinit-Gruppe

Clas­sifica­tion by Hölzel

9.FE.110

9: SILICATES
F: Tektosilicates
E: Hexagonal or trigonal with other Anions
1: Cancrinite-Group - hexagonal, axis for a~~12A and c~~5A

Dana 8th edi­tion

76.02.05.05

76: Tektosilicates Tectosilicate Al-Si Framework
02: Tektosilicates Tectosilicate Al-Si Framework Feldspathoids and related species
05: Cancrinite group

IMA sta­tus

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Cancrinit–Sodalit supergroup  ⇒ Cancrinite Group  ⇒ Davyne Subgroup

Optical Properties

Color

farblos, weiß

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent

max. Birefrin­gence

0.001

Birefringence chart\! Davyne title=Birefringence chart Davyne

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

1.519

RI value γ / ε

1.520

Ri mean

1.519

2V angle

Uniaxial (+)

Crystallography

Crystal Sys­tem

hexagonal

Class (H-M)

6

Space Group number

173

Space Group

P63

Cell param­e­ters a (Å)

12.671

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

5.328

Cell param­e­ters a/b or c/a

0.420

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

120°

Z

1

Volumne (ų)

740.827

X-Ray Pow­der Diffrac­tion

4.80(100),
3.671(100),
3.283(100),
2.756(60),
2.670(80),
2.652(60),
2.447(60),
2.121(80)

XRD chart Davyne

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)

6

VHN (Hard­ness Vick­ers)

730 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.42 - 2.53, Ø 2.47 (gemessen)

2.49 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ Säuren

Preface

Author (Name, Year)

Monticelli & Covelli, 1825

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 182

IMA group assignments

Other languages

German

Davyn

Spanish

Davyna

English

Davyne

French

Davyne

Russian

Давин

Alternative Name

English

Acarbodavyne

CNMNC symbol

Symbol

Dvy

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Davyn
Google-Bilder-Suche - search for: Davyn
Mineralienatlas.de (Forum) - search for: Davyn

English pages

Mindat - search for: Davyne
Webmineral - search for:Davyne
Handbook-of-Mineralogy - search for: Davyne
RRUFF - Raman, XRD and other mineral data - search for: Davyne
RRUFF - References and PDF downloads - search for: Davyne
American-Mineralogist-Crystal-Structure-Database - search for: Davyne
Strahlen.org - search for: Davyne

Russian pages

Webmineral.ru - search for: Давин

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Davyn
Crystal-Treasure.com - search for: Davyn
Bosse - search for: Davyn
Edelsteine Neuburg - Gundolf Fischer - search for: Davyn

Locations with GPS information