https://www.edelsteine-neuburg.de
https://www.mineralbox.biz
https://www.mineraliengrosshandel.com
https://www.mineral-bosse.de
'._('einklappen').'
 

Milarite (Milarit)

Pictures (129 Images total)

Milarit
Views (File:
1167317128
): 6343, Rating: 9.4
Milarit
Bildbreite: 5 mm; Fundort: Schijenstock, Uri, Schweiz
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Schweiz/Uri, Kanton/Göschenen/Riental/Schijenstock (Schyenstock; Schirstock)
Mineral: Milarite
Image: 1167317128
Rating: 9.4 (votes: 10)
License: Usage for Mineralienatlas project only
Milarit

Bildbreite: 5 mm; Fundort: Schijenstock, Uri, Schweiz
Copyright: Stephan Wolfsried
Contribution: Hg 2006-12-28
Locality: Schijenstock (Schyenstock; Schirstock) / Riental / Göschenen / Uri, Kanton / Schweiz
Milarit
Views (File:
1246096927
): 3229, Rating: 8.86
Milarit
Bildbreite: 1,6 mm; Fundort: Cantera Venero 1, Cadaloso de los Vidrios, Madrid, Spanien
Copyright: Christian Rewitzer; Contribution: Hg
Location: Spanien/Comunidad de Madrid/Cadalso de los Vidrios/Cantera Venero 1
Mineral: Milarite
Image: 1246096927
Rating: 8.86 (votes: 7)
License: Usage for Mineralienatlas project only
Milarit

Bildbreite: 1,6 mm; Fundort: Cantera Venero 1, Cadaloso de los Vidrios, Madrid, Spanien
Copyright: Christian Rewitzer
Contribution: Hg 2009-06-27
Locality: Cantera Venero 1 / Cadalso de los Vidrios / Comunidad de Madrid / Spanien
Milarit
Views (File:
1165231930
): 3641, Rating: 9.25
Milarit
Bildbreite: 8 mm; Fundort Val Giuv, Tavetsch, Graubünden, Schweiz
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Schweiz/Graubünden, Kanton/Surselva, Region/Tujetsch (Tavetsch)/Sedrun/Val Giuv (Val Giuf)
Mineral: Milarite
Image: 1165231930
Rating: 9.25 (votes: 4)
License: Usage for Mineralienatlas project only
Milarit

Bildbreite: 8 mm; Fundort Val Giuv, Tavetsch, Graubünden, Schweiz
Copyright: Stephan Wolfsried
Contribution: Hg 2006-12-04
Locality: Val Giuv (Val Giuf) / Sedrun / Tujetsch (Tavetsch) / Surselva, Region / Graubünden, Kanton / Schweiz
Milarit
Views (File:
1269043092
): 1423
Milarit
Bildbreite: 2,5 mm; Fundort: Schijenstock (Schyenstock; Schirstock), Riental, Reusstal, Uri, Schweiz
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Schweiz/Uri, Kanton/Göschenen/Riental/Schijenstock (Schyenstock; Schirstock)
Mineral: Milarite
Image: 1269043092
Rating: 8.5 (votes: 2)
License: Usage for Mineralienatlas project only
Milarit

Bildbreite: 2,5 mm; Fundort: Schijenstock (Schyenstock; Schirstock), Riental, Reusstal, Uri, Schweiz
Copyright: Stephan Wolfsried
Contribution: Hg 2010-03-20
Locality: Schijenstock (Schyenstock; Schirstock) / Riental / Göschenen / Uri, Kanton / Schweiz
Milarit
Views (File:
1389346039
): 2236
Milarit
Bildbreite: 2,5 mm. Fundort Val Giuv, Sedrun, Tujetsch, Graubünden, Schweiz
Copyright: Stephan Wolfsried; Contribution: Hg
Location: Schweiz/Graubünden, Kanton/Surselva, Region/Tujetsch (Tavetsch)/Sedrun/Val Giuv (Val Giuf)
Mineral: Milarite
Image: 1389346039
Rating: 9 (votes: 2)
License: Usage for Mineralienatlas project only
Milarit

Bildbreite: 2,5 mm. Fundort Val Giuv, Sedrun, Tujetsch, Graubünden, Schweiz
Copyright: Stephan Wolfsried
Contribution: Hg 2014-01-10
Locality: Val Giuv (Val Giuf) / Sedrun / Tujetsch (Tavetsch) / Surselva, Region / Graubünden, Kanton / Schweiz
Milarit xx
Views (File:
1330162466
): 812
Milarit xx
Windtal,Ahrntal/Südtirol,Italien; Grösse ca. 5mm
Copyright: Haubi; Contribution: Haubi
Collection: Haubi
Location: Italien/Trentino-Südtirol (Trentino-Alto Adige), Region/Südtirol (Bozen), Provinz/Ahrntal/Windtal (Valle del Vento)
Mineral: Milarite
Image: 1330162466
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Milarit xx

Windtal,Ahrntal/Südtirol,Italien; Grösse ca. 5mm
Collection: Haubi
Copyright: Haubi
Contribution: Haubi 2012-02-25
Locality: Windtal (Valle del Vento) / Ahrntal / Südtirol (Bozen), Provinz / Trentino-Südtirol (Trentino-Alto Adige), Region / Italien

You find additional Milarit specimen at the Geolitho Museum

Collectors Summary

Color farblos, weiß, grünlichweiß, gelblich weiß
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 5.75
Fracture muschelig, uneben
Solubility +++ HF, - HCl
Crystal System hexagonal, P6/mcc

Chemism

Chemical formula

KCa2(Be2AlSi12)O30·H2O

Chemical composition

Aluminium, Beryllium, Calcium, Silicium, Kalium, Sauerstoff, Wasserstoff

Unit weight: 999.2855968 u; Number of atoms in the formula: 51

Info

Empirical formula:

KCa2(Be2AlSi12)O30·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.20

2

3.92

1.0079470

2.0158940
Beryllium

Be

1.80

2

3.92

9.0121823

18.0243646
Oxygen

O

49.63

31

60.78

15.9994300

495.9823300
Aluminium

Al

2.70

1

1.96

26.9815382

26.9815382
Silicon

Si

33.73

12

23.53

28.0855300

337.0263600
Potassium

K

3.91

1

1.96

39.0983100

39.0983100
Calcium

Ca

8.02

2

3.92

40.0784000

80.1568000

Analysis wt%

SiO2 : 71.66, Al2O3 : 4.68, BeO : 5.24, CaO : 11.70, K2O : 4.91, Na2O : 0.46, H2O : 1.07 (Ref: American Mineralogist 31)

Strunz 9th edition incl. updates

9.CM.05

9: Silikate (Germanate)
C: Ringsilikate (Cyclosilikate)
M: ~[Si6O18]12- sechser-Doppelringe
05:Milarit-Gruppe

Lapis Classification

VIII/E.22-015

VIII: SILIKATE
E: Ringsilikate
22: Doppelte Sechserringe [Si12O30] 12-; Milarit/Osumilith-Gruppe

Classification by Hölzel

9.CF.100

9: SILICATES
C: Cyclosilicates
F: ~[Si12O30]12--Rings Milarite-Group

Dana 8th edition

63.02.01a.12

63: Cyclosilicates Cyclosilicate Condensed Rings
02: Cyclosilicates Cyclosilicate Condensed Rings 6-membered rings
01a: Milarite - Osumilite group (Milarite - Osumilite subgroup)

IMA status

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

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Osumilite Group

Optical Properties

Color

farblos, weiß, grünlichweiß, gelblich weiß

Streak color

weiß

Diaphaneity (Transparency)

transparent bis durchscheinend

Lustre

Glasglanz

max. Birefringence

0.003
Birefringence chart\! Milarite title=Birefringence chart Milarite

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

1.532

RI value γ / ε

1.529

Ri mean

1.531

2V angle

Uniaxial (-), abnormal auch Biaxial

Optical Data Luminescence

Luminescence

fluoreszierend

Color LW-UV (365nm)

  

bläulich weiß

LW-UV Intensity

schwach

MW-UV (320nm)

  

bläulich weiß

Color SW-UV (254nm)

  

bläulich weiß

SW-UV Intensity

schwach

LW-UV Other Colors

  

grün

SW-UV Other Colors

  

grün

Most Common Activator

Ce3+

Other Activators

Eu2+, Mn2+

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

hexagonal

Class (H-M)

6/mmm

Space Group number

192

Space Group

P6/mcc

Cell parameters a (Å)

10.45

Cell parameters b (Å)

-

Cell parameters c (Å)

13.88

Cell parameters a/b or c/a

1.328

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

120°

Z

2

Volumne (ų)

1312.661

X-Ray Powder Diffraction

5.22(40),
4.16(50),
3.777(20),
3.456(20),
3.316(100),
3.227(20),
2.882(70),
2.745(50)
XRD chart Milarite

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)

5.75

VHN (Hardness Vickers)

630 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.56 (gemessen) 2.565 (berechnet)

2.528 ( ρ calc. Mineralienatlas )

Fracture

muschelig, uneben

Tenacity

spröde

Instability

+++ HF, - HCl

(Co-)Type locality

(Co-)Type locality

Schweiz/Graubünden, Kanton/Surselva, Region/Tujetsch (Tavetsch)/Sedrun/Val Giuv (Val Giuf)

Preface

Occurrences

in hydrothermalen, alpinen Niedertemperatur Adern, in Aplit-, Syenit- und Granit-Pegmatiten

Author (Name, Year)

Kenngott, 1870

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 541

IMA group assignments

 
Osumilite Group
 
 
 

 
 
Agakhanovite-(Y)
YCaKBe3Si12O30·H2O
hexagonal
P6/mcc

 
 
Almarudite
(K,Na)(Mn2+,Fe2+,Mg)2(Be,Al)3[Si12O30]
hexagonal
P6/mcc

 
 
Aluminosugilite
KNa2Al2Li3Si12O30
hexagonal
P6/mcc

 
 
Armenite
BaCa2Al6Si9O30·2 H2O
orthorhombisch
Pnc2

 
 
Berezanskite
KLi3Ti2[Si12O30]
hexagonal
P6/mcc

 
 
Brannockite
KSn2Li3Si12O30
hexagonal
P6/mcc

 
 
Darapiosite
KNa2Li(Mn,Zn)2ZrSi12O30
hexagonal
P6/mcc

 
 
Dusmatovite
K(K,Na)2(Zn,Li)3(Mn2+,Mn3+,Y,Zr)2[Si12O30]
hexagonal
P6/mcc

 
 
Eifelite
KNa3Mg4Si12O30
hexagonal
P6/mcc

 
 
Friedrichbeckeite
K(☐Na)Mg2(Be2Mg)Si12O30
hexagonal
P6/mcc

 
 
Klöchite
KNaFe2Zn3[Si12O30]
hexagonal
P63/mmc

 
 
Laurentthomasite
Mg2K(Be2Al)Si12O30
hexagonal
P6/mcc

 
 
Merrihueite
(K,Na)2(Fe2+,Mg)5Si12O30
hexagonal
P6/mcc

 
 
Milarite
KCa2(Be2AlSi12)O30·H2O
hexagonal
P6/mcc

 
 
Osumilite
(K,Na)(Fe2+,Mg)2(Al,Fe3+)3(Si,Al)12O30
hexagonal
P6/mcc

 
 
Osumilite-(Mg)
KMg2Al3(Al2Si10)O30
hexagonal
P6/mcc

 
 
Poudretteite
KNa2B3Si12O30
hexagonal
P6/mcc

 
 
Roedderite
KNaMg2(Mg3Si12)O30
hexagonal
P62c

 
 
Shibkovite
K<3(Ca,Mn,Na)2Zn3[Si12O30]
hexagonal
P6/mcc

 
 
Sogdianite
(K,Na)2(Li,Fe3+,Al)3ZrSi12O30
hexagonal
P6/mcc

 
 
Sugilite
KNa2(Fe2+,Mn2+,Al)2Li3Si12O30
hexagonal
P6/mmc

 
 
Trattnerite
(Fe,Mg)2(Mg,Fe)3(Si12O30)
hexagonal
P6/mcc

 
 
Yagiite
NaMg2(AlMg2Si12)O30
hexagonal
P6/mcc

Refresh list

Actuality: 30. Mar 2023 - 17:51:48

Other languages

German

Milarit

Spanish

Milarita

French

Milarite

English

Milarite

Russian

Миларит

Simplified Chinese

整柱石

Traditional Chinese

鈹鈣大隅石

Simplified Chinese

铍钙大隅石

CNMNC symbol

Symbol

Mil

Locations with GPS information