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Rubicline

Collectors Summary

Color farblos
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 6
Cleavages vollkommen {001}, gut {010} (bei Analogie zu Mikroklin)
Crystal System triklin, P1
Morphology Körnig

Chemism

Chem­ical formula

(Rb,K)[AlSi3O8]

Chem­ical com­po­si­tion

Aluminium, Rubidium, Silicium, Kalium, Sauerstoff

Unit weight: 313.1090182 u; Number of atoms in the formula: 13

Info

Empirical formula:

(Rb0.75K0.25)[AlSi3O8]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

40.88

8

61.54

15.9994300

127.9954400

Aluminium

Al

8.62

1

7.69

26.9815382

26.9815382

Silicon

Si

26.91

3

23.08

28.0855300

84.2565900

Potassium

K

3.12

0.25

1.92

39.0983100

9.7745775

Rubidium

Rb

20.47

0.75

5.77

85.4678300

64.1008725

Anal­y­sis wt%

SiO2 : 58.68, Al2O3 : 16.48, Cs2O : 0.92, Rb2O : 17.47, K2O : 6.23 (Ref: American Mineralogist 98)

Strunz 9th edi­tion incl. updates

9.FA.30

9: Silikate (Germanate)
F: Gerüstsilikate (Tektosilikate) ohne zeolithisches H2O
A: Gerüstsilikate (Tektosilicates) ohne weitere [Anionen]
30:Feldspat: Alkali

Lapis Clas­sifica­tion

VIII/J.06-035

VIII: SILIKATE
J: Gerüstsilikate (mit Zeolithen)
6: Ohne tetraederfremde Anionen; Feldspat-Gruppe

Clas­sifica­tion by Hölzel

9.FC.310

9: SILICATES
F: Tektosilicates
C: Feldspar-Group

Dana 8th edi­tion

76.01.01.07

76: Tektosilicates Tectosilicate Al-Si Framework
01: Tektosilicates Tectosilicate Al-Si Framework with Al-Si frameworks
01: K (Na,Ba) feldspars

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Feldspar group  ⇒ Alkali feldspar

Optical Properties

Color

farblos

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent

Lus­tre

Glasglanz

2V angle

Biaxial

Crystallography

Crystal Sys­tem

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell param­e­ters a (Å)

8.81

Cell param­e­ters b (Å)

13.01

Cell param­e­ters c (Å)

7.18

Cell param­e­ters a/b or c/a

0.677

Cell param­e­ters c/b

0.552

Cell param­e­ters α

90.30

Cell param­e­ters β

115.70

Cell param­e­ters γ

88.20

Z

4

Volumne (ų)

741.15

X-Ray Pow­der Diffrac­tion

5.82(0),
5.77(0),
4.62(0),
3.88(0),
3.61(0),
3.60(0),
3.59(0),
2.94(0)

XRD chart Rubicline

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

Morphol­ogy

Körnig

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

6

Density (g/cm³)

2.75 (berechnet)

2.806 ( ρ calc. Mineralienatlas )

Cleav­ages

vollkommen {001}, gut {010} (bei Analogie zu Mikroklin)

Tenac­ity

spröde

Preface

Occurrences

In Pegmatiten

Asso­cia­tions

Mikroklin, Pollucit, Lepidolith, Muskovit, Quarz, Apatit

Rare­ness

Extrem selten

Author (Name, Year)

Teertstra & Cerny & Hawthorne & Pier & Wang & Ewing, 1998

References

American Mineralogist 83 (1998), 1335

IMA group assignments

Other languages

Spanish

Rubiclina

French

Rubicline

English

Rubicline

German

Rubiklin

Russian

Рубиклин

CNMNC (IMA)-Number

IMA 1996-058

CNMNC symbol

Symbol

Rub

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Рубиклин

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Rubiklin
Crystal-Treasure.com - search for: Rubiklin
Bosse - search for: Rubiklin
Edelsteine Neuburg - Gundolf Fischer - search for: Rubiklin
Geolitho marketplace, by and for collectors - search for: Rubiklin

Locations with GPS information