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Pollucite

Pictures (12 Images total)

Pollucit
Views (File:
1275674854
): 3217, Rating: 6.75
Pollucit
Bildbreite: 0,2 mm, Fundort: Tre Croci, Vetralla, Lago de Vico, Latium, Italien
Copyright: Luigi Mattei; Contribution: thdun5
Location: Italien/Latium (Lazio), Region/Viterbo, Provinz/Vicosee (Lago di Vico)/Vetralla/Tre Croci
Mineral: Pollucite
Image: 1275674854
Rating: 6.75 (votes: 4)
License: Usage for Mineralienatlas project only
Pollucit

Bildbreite: 0,2 mm, Fundort: Tre Croci, Vetralla, Lago de Vico, Latium, Italien

Copyright: Luigi Mattei
Contribution: thdun5 2010-06-04
Locality: Tre Croci / Vetralla / Vicosee (Lago di Vico) / Viterbo, Provinz / Latium (Lazio), Region / Italien
Pollucit
Views (File:
1270911194
): 3442
Pollucit
Pollucit mit Hambergit. Größe: 4,8 x 4,4 x 2,7 cm, Fundort: Shigar-Tal, Distrikt Skardu, Baltistan, Nordgebiete, Pakistan.
Copyright: Dan Weinrich; Contribution: thdun5
Location: Pakistan/Gilgit-Baltistan (Nordgebiete; Northern Areas)/Skardu, Distrikt/Shigar-Tal
Mineral: Pollucite
Image: 1270911194
Rating: 6.33 (votes: 3)
License: Usage for Mineralienatlas project only
Pollucit

Pollucit mit Hambergit. Größe: 4,8 x 4,4 x 2,7 cm, Fundort: Shigar-Tal, Distrikt Skardu, Baltistan, Nordgebiete, Pakistan.

Copyright: Dan Weinrich
Contribution: thdun5 2010-04-10
Locality: Shigar-Tal / Skardu, Distrikt / Gilgit-Baltistan (Nordgebiete; Northern Areas) / Pakistan
Pollucit
Views (File:
1207250053
): 3176
Pollucit
Fundort: Mogok, Myanmar; Größe: 1.6 x 1.6 x 1.2 cm
Copyright: Rob Lavinsky; Contribution: slugslayer
Location: Myanmar (Burma)/Mandalay-Division/Pyin-Oo-Lwin, Distrikt/Mogok Township
Mineral: Pollucite
Image: 1207250053
Rating: 6 (votes: 2)
License: Usage for Mineralienatlas project only
Pollucit

Fundort: Mogok, Myanmar; Größe: 1.6 x 1.6 x 1.2 cm

Copyright: Rob Lavinsky
Contribution: slugslayer 2008-04-03
Locality: Mogok Township / Pyin-Oo-Lwin, Distrikt / Mandalay-Division / Myanmar (Burma)
Pollucit
Views (File:
1207250182
): 2657
Pollucit
Größe: 6.0 x 4.0 x 2.6 cm; Fundort: Skardu, Pakistan
Copyright: Ibrahim Jameel; Contribution: slugslayer
Location: Pakistan/Gilgit-Baltistan (Nordgebiete; Northern Areas)/Skardu, Distrikt
Mineral: Pollucite
Image: 1207250182
Rating: 5.5 (votes: 2)
License: Usage for Mineralienatlas project only
Pollucit

Größe: 6.0 x 4.0 x 2.6 cm; Fundort: Skardu, Pakistan

Copyright: Ibrahim Jameel
Contribution: slugslayer 2008-04-03
Locality: Skardu, Distrikt / Gilgit-Baltistan (Nordgebiete; Northern Areas) / Pakistan
Orthoklas mit Pollucit
Views (File:
1217102465
): 3277
Orthoklas mit Pollucit
Bildbreite: 43 mm; Fundort: Grotta d'Oggi, San Piero in Campo, Campo nell'Elba, Insel Elba, Livorno, Toskana (Toscana), Italien
Copyright: Matteo Chinellato; Contribution: Hg
Location: Italien/Toskana (Toscana)/Livorno, Provinz/Elba, Insel/Campo nell'Elba/San Piero in Campo/Grotta d'Oggi
Mineral: Pollucite
Image: 1217102465
Rating: 6 (votes: 2)
License: Usage for Mineralienatlas project only
Orthoklas mit Pollucit

Bildbreite: 43 mm; Fundort: Grotta d'Oggi, San Piero in Campo, Campo nell'Elba, Insel Elba, Livorno, Toskana (Toscana), Italien

Copyright: Matteo Chinellato
Contribution: Hg 2008-07-26
Locality: Grotta d'Oggi / San Piero in Campo / Campo nell'Elba / Elba, Insel / Livorno, Provinz / Toskana (Toscana) / Italien
Pollucit
Views (File:
1261766682
): 1594
Pollucit
derb,dicht,; FO: Karibib District, Erongo, Namibia; 6,5 x 4,5 x 3,0 cm
Copyright: rtbstone; Contribution: rtbstone
Collection: rtbstone
Location: Namibia/Erongo, Region/Karibib, Kreis
Mineral: Pollucite
Image: 1261766682
Rating: 5 (votes: 1)
License: Usage for Mineralienatlas project only
Pollucit

derb,dicht,; FO: Karibib District, Erongo, Namibia; 6,5 x 4,5 x 3,0 cm

Collection: rtbstone
Copyright: rtbstone
Contribution: rtbstone 2009-12-25
Locality: Karibib, Kreis / Erongo, Region / Namibia

Collectors Summary

Color farblos, weiß, grau, blassrosa, blau
Streak color weiß
Lustre Glasglanz, Matt
Hardness (Mohs) 6.75
Solubility +++ HF, + HCl
Crystal System kubisch, Ia3d
Morphology Meist derb oder in gerundeten, verwitterten Kristallen; selten gut ausgebildete Kristalle mit Trapezoederflächen und auch Würfelflächen. Flächen gewöhnlich {100} und {211}, selten {110} und {210}.

Chemism

Chem­ical formula

(Cs,Na)(Si2Al)O6·nH2O

Addi­tional chem. informa­tion

Beimengungen von Fe,Ca,K,Rb

Chem­ical com­po­si­tion

Aluminium, Cäsium, Natrium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 302.59103375 u; Number of atoms in the formula: 13

Info

Empirical formula:

(Cs0.75Na0.25)(Si2Al)O6·nH2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.67

2

15.38

1.0079470

2.0158940

Oxygen

O

37.01

7

53.85

15.9994300

111.9960100

Sodium

Na

1.90

0.25

1.92

22.9897702

5.7474426

Aluminium

Al

8.92

1

7.69

26.9815382

26.9815382

Silicon

Si

18.56

2

15.38

28.0855300

56.1710600

Caesium

Cs

32.94

0.75

5.77

132.9054520

99.6790890

Anal­y­sis wt%

SiO2 : 45.20, Al2O3 : 16.98, Cs2O : 33.02, Na2O : 2.04, K2O : 0.61, H2O : 2.04 (Ref: American Mineralogist 38)

Strunz 9th edi­tion incl. updates

9.GB.05

9: Silikate (Germanate)
G: Gerüstsilikate (Tektosilikate) mit zeolithischem H2O; Familie der Zeolithe
B: Ketten von einfach verbundenen vierer-Ringen
05:Analcim-Gruppe

Lapis Clas­sifica­tion

VIII/J.27-020

VIII: SILIKATE
J: Gerüstsilikate (mit Zeolithen)
27: Zeolith-Gruppe; Würfelzeolithe

Clas­sifica­tion by Hölzel

9.FB.180

9: SILICATES
F: Tektosilicates
B: Leucite-Group

Hey's Chem­ical Index of Min­er­als

16.05.01

16: Silicates Containing Aluminum and other Metals
05: Aluminosilicates of Cs, NH4 and Cu

Dana 8th edi­tion

77.01.01.02

77: Tektosilicates Tectosilicate Zeolite group
01: Tektosilicates Tectosilicate Zeolite group true zeolites
01: Analcime and related species

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Zeolite group  ⇒ ANA zeolite structure group

Optical Properties

Color

farblos, weiß, grau, blassrosa, blau

Streak color

weiß

Change in color

isotrop

Diaphane­ity (Trans­parency)

transparent bis durchscheinend

Lus­tre

Glasglanz, Matt

RI value α / ω / n

1.520

Ri mean

1.520

2V angle

Isotropisch

Optical Data Luminescence

Color LW-UV (365nm)

 

gelblich weiß

Color SW-UV (254nm)

 

orange

SW-UV Other Col­ors

 

gelblich weiß

Most Common Acti­vator

Mn2+

After­glow (Per­sistant Lumi­nes­cence)

keine Daten

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

m3m

Space Group number

230

Space Group

Ia3d

Cell param­e­ters a (Å)

13.71

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

-

Cell param­e­ters a/b or c/a

1

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

16

Volumne (ų)

2576.988

Kristall struc­ture

Das Kristallgitter besteht aus 4er-Ring-Ketten, gewunden um quadratische Prismen, die Käfigähnlich doppelte 6er-Ringe bilden.

Kevin. S. Knight, C. Michael B. Henderson: Defining an aristotype crystal structure and crystallographic distortions in leucite/pollucite-structured phases with space group Ia3d. Physics and Chemistry of Minerals Volume 46, Issue 6 (2019) S. 595–605.

X-Ray Pow­der Diffrac­tion

3.42 (100), 2.913 (45), 3.65 (30), 2.416 (24), 1.736 (22), 1.860 (18), 2.218 (17)

Morphol­ogy

Meist derb oder in gerundeten, verwitterten Kristallen; selten gut ausgebildete Kristalle mit Trapezoederflächen und auch Würfelflächen. Flächen gewöhnlich {100} und {211}, selten {110} und {210}.

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

6.75

VHN (Hard­ness Vick­ers)

1110 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.9

3.12 ( ρ calc. Mineralienatlas )

Radioac­tiv­ity

Radioaktivität von Pollucit kaum nachweisbar.

Insta­bil­ity

+++ HF, + HCl

Chem­ical Prop­er­ties and Tests

schwer löslich in Salzsäure

(Co-)Type locality

(Co-)Type locality

Italien/Toskana (Toscana)/Livorno, Provinz/Elba, Insel/Campo nell'Elba/San Piero in Campo/Gang della Speranza (Filone della Speranza)

Type mate­r­ial

Mineralogische Sammlung der TU Bergakademie Freiberg

Col­lec­tion number of type mate­r­ial

27111; 27112; 27113

Par­a­ge­n­e­sis of type mate­r­ial

Turmalin, Quarz, Mikroklin, Muskovit

Preface

Occurrences

In Lithum-haltigen Pegmatiten.

Asso­cia­tions

Mikroklin, Quarz, Amblygonit, Spodumen, Lepidolith

Rare­ness

selten

Name from

Name nach Pollux, einem der Zwillingsbrüder aus der griechischen und römischen Mythologie.

Author (Name, Year)

Breithaupt, 1846

References

Canadian Mineralogist 35 (1997), 1571
BREITHAUPT A. (1846): Pollux. - (Poggendorff's) Annalen der Physik und Chemie, 69: S. 439.

IMA group assignments



 
 
 
(NH4)(AlSi2O6)
tetragonal
I41/a

 
 
 
Na(Si2Al)O6·H2O
orthorhombisch
Ibca

 
 
 
Ca3Li2Be3(SiO4)3F2
kubisch
I213

 
 
 
CsBSi2O6
tetragonal
I41/acd

 
 
 
K(AlSi2)O6
tetragonal
I41/a

 
 
 
(Cs,Na)(Si2Al)O6·nH2O
kubisch
Ia3d

 
 
 
CaAl2Si4O12·2H2O
monoklin
I2/a

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Actuality: 06. Aug 2022 - 10:22:17

Other languages

German

Pollucit

French

Pollucite

English

Pollucite

Spanish

Polucita

Russian

Поллуцит

Simplified Chinese

铯榴石

Simplified Chinese

铯沸石

Alternative Name

Caesium Silicate

Spanish

Pollucita

Latin

Pollux

Japanese

ポルクス石

CNMNC symbol

Symbol

Pol

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

German pages

DeWikiPedia - search for: Pollucit
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English pages

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RRUFF - Raman, XRD and other mineral data - search for: Pollucite
RRUFF - References and PDF downloads - search for: Pollucite
American-Mineralogist-Crystal-Structure-Database - search for: Pollucite
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Russian pages

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