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Yoshiokaite

Additional Functions

Collectors Summary

Color farblos
Streak color weiß
Cleavages undeutlich {010},{100}
Fracture muschelig
Crystal System trigonal, P3

Chemism

Chemical formula

Ca(Al,Si)2O4

Chemical composition

Aluminium, Calcium, Silicium, Sauerstoff

Unit weight: 158.5911923 u; Number of atoms in the formula: 7

Info

Empirical formula:

Ca(Al0.75Si0.25)2O4

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Oxygen

O

40.35

4

57.14

15.9994300

63.9977200
Aluminium

Al

25.52

1.5

21.43

26.9815382

40.4723073
Silicon

Si

8.85

0.5

7.14

28.0855300

14.0427650
Calcium

Ca

25.27

1

14.29

40.0784000

40.0784000

Analysis wt%

Ø SiO2 : 21.20, Al2O3 : 51.50, CaO : 27.30 (Ref: American Mineralogist 90)

Strunz 9th edition incl. updates

9.FA.05

9: Silikate (Germanate)
F: Gerüstsilikate (Tektosilikate) ohne zeolithisches H2O
A: Gerüstsilikate (Tektosilicates) ohne weitere [Anionen]
05:Nephelin-Gruppe

Lapis Classification

VIII/J.02-060

VIII: SILIKATE
J: Gerüstsilikate (mit Zeolithen)
2: Ohne tetraederfremde Anionen

Classification by Hölzel

9.FA.215

9: SILICATES
F: Tektosilicates
A: Without other tetrahedral Anions

Dana 8th edition

76.02.01.06

76: Tektosilicates Tectosilicate Al-Si Framework
02: Tektosilicates Tectosilicate Al-Si Framework Feldspathoids and related species
01: Nepheline group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos

Streak color

weiß

max. Birefringence

0.015~
Birefringence chart\! Yoshiokaite title=Birefringence chart Yoshiokaite

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

1.59

Ri mean

1.59

2V angle

Biaxial (+) 5°<!

Crystallography

Crystal System

trigonal

Class (H-M)

3

Space Group number

147

Space Group

P3

Cell parameters a (Å)

9.939

Cell parameters b (Å)

-

Cell parameters c (Å)

8.245

Cell parameters a/b or c/a

0.830

Cell parameters c/b

-

Z

8

Volume (ų)

705.353

X-Ray Powder Diffraction

8.54(50),
4.94(30),
3.709(10),
3.019(20),
2.972(100),
2.862(20),
2.297(50),
2.061(20)
XRD chart Yoshiokaite

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

Crystal Structure 3D

Open larger view

Physical Properties

Density (g/cm³)

2.79 (berechnet)

2.987 ( ρ calc. Mineralienatlas )

Cleavages

undeutlich {010},{100}

Fracture

muschelig

(Co-)Type locality

(Co-)Type locality

Mond/Fra Mauro Hochland/Fra Mauro Basis (Apollo 14 Landungszone)

Preface

Author (Name, Year)

Vaniman & Bish, 1990

References

American Mineralogist 75 (1990), 676

Other languages

German

Yoshiokait

English

Yoshiokaite

French

Yoshiokaite

Spanish

Yoshiokaíta

Russian

Иошиокаит

CNMNC symbol

Symbol

Yos

IDs

GUSID (Global unique identifier short form) c9x1OTZg0UCyXdzbj4Q7Hw
GUID (Global unique identifier) 3975DC73-6036-40D1-B25D-DCDB8F843B1F
Database ID 4239