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Orthojoaquinite-(Ce) (Orthojoaquinit-(Ce))

Collectors Summary

Color gelb, hellbraun
Hardness (Mohs) 5.5
Crystal System orthorhombisch, Ccmm

Chemism

Chemical formula

Ba2NaCe2Fe2+Ti2Si8O26(O,OH)·H2O

Chemical composition

Barium, Cerium, Eisen, Natrium, Silicium, Titan, Sauerstoff, Wasserstoff

Unit weight: 1404.39293095 u; Number of atoms in the formula: 46.25

Info

Empirical formula:

Ba2NaCe2FeTi2Si8O26(O0.75(OH)0.25)·H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.16

2.25

4.86

1.0079470

2.2678808

Oxygen

O

31.90

28

60.54

15.9994300

447.9840400

Sodium

Na

1.64

1

2.16

22.9897702

22.9897702

Silicon

Si

16.00

8

17.30

28.0855300

224.6842400

Titanium

Ti

6.82

2

4.32

47.8671000

95.7342000

Iron

Fe

3.98

1

2.16

55.8452000

55.8452000

Barium

Ba

19.56

2

4.32

137.3277000

274.6554000

Cerium

Ce

19.95

2

4.32

140.1161000

280.2322000

Analysis wt%

SiO2 : 34.21, TiO2 : 11.37, Ce2O3 : 23.36, FeO : 5.11, BaO : 21.82, Na2O : 2.21, H2O : 1.92, Ln2O3 : 23.36 (Ref: berechnet)

Strunz 9th edition incl. updates

9.CE.25

9: Silikate (Germanate)
C: Ringsilikate (Cyclosilikate)
E: [Si4O12]8- vierer-Einfachringe, ohne inselartige komplexe [Anionen]
25:

Lapis Classification

VIII/E.08-090

VIII: SILIKATE
E: Ringsilikate
8: Viererringe [Si4O12] 8-; Joaquinit-Gruppe und Verwandte

Classification by Hölzel

9.CB.350

9: SILICATES
C: Cyclosilicates
B: ~[Si4O12]8-, ~[Si4O10]4--Rings
3: Joaquinite-Group

Dana 8th edition

60.01.01b.01

60: Cyclosilicates Cyclosilicate Four-Membered Rings
01: Cyclosilicates Cyclosilicate Four-Membered Rings as Titanosilicates
01b: Joaquinite group (Ortho-joaquinite subgroup)

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Joaquinite group

Optical Properties

Color

gelb, hellbraun

Diaphaneity (Transparency)

transparent

max. Birefringence

0.069

Birefringence chart\! Orthojoaquinite-(Ce) title=Birefringence chart Orthojoaquinite-(Ce)

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

1.753

RI value β

1.767

RI value γ / ε

1.822

Ri mean

1.781

2V angle

Biaxial (+) 43°~

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mmm

Space Group number

63

Space Group

Ccmm

Cell parameters a (Å)

10.48

Cell parameters b (Å)

9.66

Cell parameters c (Å)

22.26

Cell parameters a/b or c/a

1.085

Cell parameters c/b

2.304

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volumne (ų)

2253.531

X-Ray Powder Diffraction

4.43(90),
3.29(60),
3.05(40),
2.978(40),
2.943(100),
2.890(80),
2.606(60),
1.866(50)

XRD chart Orthojoaquinite-(Ce)

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

Crystals 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.5

VHN (Hardness Vickers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.68

4.139 ( ρ calc. Mineralienatlas )

Preface

Author (Name, Year)

Wise, 1982

References

American Mineralogist 67 (1982), 809

IMA group assignments

Other languages

German

Orthojoaquinit-(Ce)

English

Orthojoaquinite-(Ce)

French

Orthojoaquinite-(Ce)

Spanish

Ortojoaquinita-(Ce)

CNMNC (IMA)-Number

IMA 1979-081a

CNMNC symbol

Symbol

Ojq-Ce

Locations with GPS information