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Hydroastrophyllite

Pictures (2 Images total)

Hydroastrophyllit
Views (Image: 1243694721): 1247
Hydroastrophyllit

Bildbreite: 12 mm; Fundort: West-Keivy, Westliches Keivy-Massiv, Kola-Halbinsel, Murmansk, Russland

Copyright: Pavel M. Kartashov
Contribution: slugslayer 2009-05-30
Locality: Western Keivy Massif / Keivy-Massiv / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland
Hydroastrophyllit auf Riebeckit
Views (Image: 1243693611): 812
Hydroastrophyllit auf Riebeckit

Bildbreite: 15 mm; Fundort: West-Keivy, Westliches Keivy-Massiv, Kola-Halbinsel, Murmansk, Russland

Copyright: Pavel M. Kartashov
Contribution: slugslayer 2009-05-30
Locality: Western Keivy Massif / Keivy-Massiv / Kola-Halbinsel / Murmansk, Oblast / Nordwestrussland, Föderationskreis / Russland

Collectors Summary

Color dunkelbraun
Streak color gelb weiß
Hardness (Mohs) 3 - 4
Crystal System triklin,

Chemism

Chem­ical formula

(H3O,K)2Ca(Fe2+,Mn)5-6Ti2[O2|F|(OH)4|Si8O24]

Chem­ical com­po­si­tion

Calcium, Eisen, Mangan, Silicium, Titan, Fluor, Kalium, Sauerstoff, Wasserstoff

Unit weight: 1217.4952613625 u; Number of atoms in the formula: 58

Info

Empirical formula:

((H3O)0.75K0.25)2Ca(Fe0.75Mn0.25)5.5Ti2[O2F(OH)4Si8O24]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.70

8.5

14.66

1.0079470

8.5675495

Oxygen

O

41.39

31.5

54.31

15.9994300

503.9820450

Fluorine

F

1.56

1

1.72

18.9984033

18.9984033

Silicon

Si

18.45

8

13.79

28.0855300

224.6842400

Potassium

K

1.61

0.5

0.86

39.0983100

19.5491550

Calcium

Ca

3.29

1

1.72

40.0784000

40.0784000

Titanium

Ti

7.86

2

3.45

47.8671000

95.7342000

Manganese

Mn

6.20

1.38

2.37

54.9380499

75.5398186

Iron

Fe

18.92

4.13

7.11

55.8452000

230.3614500

Anal­y­sis wt%

SiO2 : 25.72, TiO2 : 9.63, Nb2O5 : 5.01, Ta2O5 : 0.82, Al2O3 : 3.91, Fe2O3 : 24.24, MnO2 : 3.37, MnO : 8.05, MgO : 0.51, CaO : 2.40, K2O : 1.28, Na2O : 0.53, H2O : 12.39, F : 1.83 (Ref: Sci.Geol.Sin.74)

Strunz 9th edi­tion incl. updates

9.DC.05

9: Silikate (Germanate)
D: Ketten- und Bandsilikate (Inosilikate)
C: Ketten- und Bandsilikate mit verzweigten 2-periodischen Einzelketten, Si2O6 + 2SiO3 -> Si4O12
05:Astrophyllit-Gruppe

Lapis Clas­sifica­tion

VIII/G.12-030

VIII: SILIKATE
G: Übergangsstrukturen zwischen Ketten- und Schichtsilikaten
12: Astrophyllit-Gruppe

Clas­sifica­tion by Hölzel

9.DU.520

9: SILICATES
D: Inosilicates; ~[Si2O6]4--...2-Chain
U: Chains to Phyllosilicates
5: Astrophyllite-Group

IMA sta­tus

Ohne Prüfung durch die CNMNC veröffentlicht

IMA Classification

IMA Clas­sifica­tion

Astrophyllite supergroup  ⇒ Astrophyllite group

Optical Properties

Color

dunkelbraun

Streak color

gelb weiß

Diaphane­ity (Trans­parency)

durchscheinend bis opak

max. Birefrin­gence

0.068

Birefringence chart\! Hydroastrophyllite title=Birefringence chart Hydroastrophyllite

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

1.660

RI value β

1.720

RI value γ / ε

1.728

Ri mean

1.703

2V angle

Biaxial (-) 40°

Crystallography

Crystal Sys­tem

triklin

Cell param­e­ters a (Å)

11.86

Cell param­e­ters b (Å)

11.98

Cell param­e­ters c (Å)

5.42

Cell param­e­ters a/b or c/a

0.990

Cell param­e­ters c/b

0.452

Cell param­e­ters α

103.42

Cell param­e­ters β

95.15

Cell param­e­ters γ

112.20

Z

1

Volumne (ų)

679.937

X-Ray Pow­der Diffrac­tion

10.55(90),
3.51(100),
2.870(40),
2.781(40),
2.643(80),
2.584(50),
2.118(60),
1.768(60)

XRD chart Hydroastrophyllite

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

Physical Properties

Hard­ness (Mohs)

3 - 4

Density (g/cm³)

3.15

2.973 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Hubei Geologic College, 1974

References

Scientia Geologica Sinica (in chinesisch) (1974), 18.

American Mineralogist 60 (1975), 736.

Canadian Mineralogist 41 (2003), 1.

IMA group assignments

Other languages

Spanish

Hidroastrofilita

German

Hydroastrophyllit

French

Hydroastrophyllite

English

Hydroastrophyllite

Russian

Гидроастрофиллит

Alternative Name

Spanish

Hydroastrophyllita

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Гидроастрофиллит

Mineral Dealer

German pages

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

Locations with GPS information