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Rondorfite

Pictures (5 Images total)

Rondorfit
Views (Image: 1254743947): 1272
Rondorfit

Bildbreite: 3 mm; Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Eifel, Deutschland

Copyright: Stephan Wolfsried
Contribution: Hg 2009-10-05
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Rondorfit
Views (Image: 1417017731): 586
Rondorfit (SNr: A009352)

Derber orangebrauer Einschluss, BB = 6,1 mm; Fundort: Stbr. Caspar, Ettringer Bellerberg, Ettringen, Eifel, Rheinland-Pfalz, Deutschland.

Collection: Lithothek der Münchener Micromounter
Copyright: Hannes Osterhammer
Contribution: Münchener Micromounter 2014-11-26
Locality: Ettringer Bellerberg (Stbr. Caspar) / Bellerberg / Ettringen / Mayen / Mayen-Koblenz-Kreis / Rheinland-Pfalz / Deutschland
Rondorfit von Barranco Hondo, Teneriffa
Views (Image: 1538146129): 239
Rondorfit von Barranco Hondo, Teneriffa

Gelbe isometrische Kristalle mit Bixbyit und Fluorapophyllit-(K). Bildbreite 1,5 mm

Collection: humboldt
Copyright: Kurt Rüsenberg
Contribution: humboldt 2018-09-28
Locality: Barranco Hondo / Teneriffa / Kanarische Inseln / Spanien
Rondorfit von Playa San Juan, Teneriffa
Views (Image: 1603991482): 165
Rondorfit von Playa San Juan, Teneriffa

Gelbe isometrische Kristalle in Nephelin-Syenit. Bildbreite 1,5 mm

Collection: humboldt
Copyright: Kurt Rüsenberg
Contribution: humboldt 2020-10-29
Locality: Playa San Juan / Teneriffa / Kanarische Inseln / Spanien
Rondorfit von Playa San Juan, Teneriffa
Views (Image: 1603991690): 135
Rondorfit von Playa San Juan, Teneriffa

Gelbe isometrische Kristalle in Nephelin-Syenit. Bildbreite 2 mm

Collection: humboldt
Copyright: Kurt Rüsenberg
Contribution: humboldt 2020-10-29
Locality: Playa San Juan / Teneriffa / Kanarische Inseln / Spanien

Collectors Summary

Color orangebraun
Streak color hellgelb
Cleavages keine
Fracture muschelig
Crystal System kubisch, Fd3

Chemism

Chem­ical formula

Ca8Mg[Cl2|(SiO4)4]

Chem­ical com­po­si­tion

Calcium, Chlor, Magnesium, Silicium, Sauerstoff

Unit weight: 784.17166 u; Number of atoms in the formula: 31

Info

Empirical formula:

Ca8Mg[Cl2(SiO4)4]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Oxygen

O

32.64

16

51.61

15.9994300

255.9908800

Magnesium

Mg

3.10

1

3.23

24.3050600

24.3050600

Silicon

Si

14.33

4

12.90

28.0855300

112.3421200

Chlorine

Cl

9.04

2

6.45

35.4532000

70.9064000

Calcium

Ca

40.89

8

25.81

40.0784000

320.6272000

Anal­y­sis wt%

SiO2 : 30.51, Al2O3 : 0.40, MgO : 4.52, FeO : 0.54, CaO : 57.05, Cl : 6.71 (Ref: Neues Jahrbuch für Mineralogie, (Monatshefte) A2004)

Strunz 9th edi­tion incl. updates

9.AB.20

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
B: Insel(Neso)silikate ohne weitere Anionen; Kationen in tetrahedraler [4] und größerer Koordination
20:Rondorfit-Gruppe

Lapis Clas­sifica­tion

VIII/B.05-005

VIII: SILIKATE
B: Inselsilikate mit tetraederfremden Anionen
5: Kationen in tetraedrischer oder oktaedrischer Koordination [4/6]

Clas­sifica­tion by Hölzel

9.AJ.520

9: SILICATES
A: Nesosilicates
J: Nesosilicates with other complex Anions
5: C large

Dana 8th edi­tion

51.04.06.01

51: Nesosilicate Minerals
04: Nesosilicates Nesosilicate Insular SiO4 Groups Only with cations in [6] and >[6] coordination

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

orangebraun

Streak color

hellgelb

RI value α / ω / n

1.676

Ri mean

1.676

2V angle

Isotropisch

Crystallography

Crystal Sys­tem

kubisch

Class (H-M)

m3

Space Group number

203

Space Group

Fd3

Cell param­e­ters a (Å)

15.085

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

8

Volumne (ų)

3432.701

X-Ray Pow­der Diffrac­tion

2.901(40),
2.666(100),
2.549(30),
1.964(30),
1.885(30),
1.777(30),
1.540(50),
1.459(30)

XRD chart Rondorfite

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

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

3.03 (berechnet)

3.035 ( ρ calc. Mineralienatlas )

Cleav­ages

keine

Frac­ture

muschelig

Tenac­ity

spröde

Preface

Name from

Frau Rondorf - Sammlerin in der Vulkaneifel - verstorben im Januar 2021

Author (Name, Year)

Mihajlovic & Lengauer & Ntaflos & Kolitsch & Tillmanns, 2004

References

Neues Jahrbuch für Mineralogie, Abhandlungen 179 (2004), 265

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Rondorfite

Ca8Mg[Cl2|(SiO4)4]

kubisch : m3 : Fd3

9.AB.20

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Rondorfite

Ca8Mg[Cl2|(SiO4)4]

kubisch : m3 : Fd3

VIII/B.05-005

Jasmundite

Ca11(SiO4)4O2S

tetragonal : 42m : I4m2

VIII/B.05-010

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Jasmundite

Ca11(SiO4)4O2S

tetragonal : 42m : I4m2

9.AJ.500

Rondorfite

Ca8Mg[Cl2|(SiO4)4]

kubisch : m3 : Fd3

9.AJ.520

Spurrite

Ca5(SiO4)2(CO3)

monoklin : 2/m : P21/a

9.AJ.530

'Paraspurrite'

Ca5(SiO4)2(CO3)

monoklin : 2/m : P21/a

9.AJ.540

Ternesite

Ca5[SO4|(SiO4)2]

orthorhombisch : mmm : Pnma

9.AJ.545

Defernite

Ca6(CO3)1.58(Si2O7)0.21(OH)7[Cl0.50(OH)0.08(H2O)0.42]

orthorhombisch : mmm : Pnam

9.AJ.550

'Nagelschmidtite'

Ca3(PO4)2·2(alpha-Ca2SiO4)

9.AJ.560

Iimoriite-(Y)

Y2(SiO4)(CO3)

triklin : 1 : P1

9.AJ.580

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Bredigite

Ca7Mg(SiO4)4

orthorhombisch : mmm : Pnnm

51.04.01.01

Merwinite

Ca3Mg(SiO4)2

monoklin : 2/m : P21/a

51.04.02.01

Pyrope

{Mg3}[Al2](Si3)O12

kubisch : m3m : Ia3d

51.04.03a.01

Almandine

{Fe2+3}[Al2](Si3)O12

kubisch : m3m : Ia3d

51.04.03a.02

Spessartine

{Mn2+3}[Al2](Si3)O12

kubisch : m3m : Ia3d

51.04.03a.03

Knorringite

{Mg3}[Cr3+2](Si3)O12

kubisch : m3m : Ia3d

51.04.03a.04

Majorite

Mg3(MgSi)(SiO4)3

51.04.03a.05

Calderite

{Mn2+3}[Fe3+2](Si3)O12

kubisch : m3m : Ia3d

51.04.03a.06

Andradite

{Ca3}[Fe3+2](Si3)O12

kubisch : m3m : Ia3d

51.04.03b.01

Grossular

{Ca3}[Al2](Si3)O12

kubisch : m3m : Ia3d

51.04.03b.02

Uvarovite

{Ca3}[Cr3+2](Si3)O12

kubisch : m3m : Ia3d

51.04.03b.03

Goldmanite

{Ca3}[V3+2](Si3)O12

kubisch : m3m : Ia3d

51.04.03b.04

Schorlomite

{Ca3}[Ti2](SiFe3+2)O12

kubisch : m3m : Ia3d

51.04.03c.01

Kimzeyite

{Ca3}[Zr2](SiAl2)O12

kubisch : m3m : Ia3d

51.04.03c.02

Morimotoite

{Ca3}[TiFe2+](Si3)O12

kubisch : m3m : Ia3d

51.04.03c.03

'Hibschite' (Var.v. Grossular)

Ca3Al2(SiO4)3-x(OH)4*x {x<0.2-1.5}

kubisch : m3m : Ia3d

51.04.03d.01

Katoite

{Ca3}[Al2](☐3)(OH)12

kubisch : m3m : Ia3d

51.04.03d.02

Henritermierite

{Ca3}[Mn3+2](Si2)(☐)O8(OH)4

tetragonal : 4/mmm : I41/acd

51.04.04.01

Wadalite

Ca6Al5Si2O16Cl3

kubisch : 43m : I43d

51.04.05.01

Rondorfite

Ca8Mg[Cl2|(SiO4)4]

kubisch : m3 : Fd3

51.04.06.01

Other languages

German

Rondorfit

Spanish

Rondorfita

French

Rondorfite

English

Rondorfite

Russian

Рондорфит

Simplified Chinese

罗道尔夫石

Traditional Chinese

羅道爾夫石

CNMNC (IMA)-Number

IMA 1997-013

CNMNC symbol

Symbol

Ron

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

German pages

DeWikiPedia - search for: Rondorfit
Google-Bilder-Suche - search for: Rondorfit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Rondorfit

English pages

Mindat - search for: Rondorfite
Webmineral - search for:Rondorfite
Handbook-of-Mineralogy - search for: Rondorfite
RRUFF - Raman, XRD and other mineral data - search for: Rondorfite
RRUFF - References and PDF downloads - search for: Rondorfite
American-Mineralogist-Crystal-Structure-Database - search for: Rondorfite
Athena - search for: Rondorfite
Strahlen.org - search for: Rondorfite
Mineralienatls.de (Forum) - search for: Rondorfit

Russian pages

Webmineral.ru - search for: Рондорфит

Mineral Dealer

German pages

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

Locations with GPS information