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Yoderite

Pictures (2 Images total)

Yoderit
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Yoderit

Bildbreite: 3 mm; Fundort: Mautia, Kongwa, Region Dodoma, Tansania

Copyright: Maurice de Graaf
Contribution: slugslayer 2009-07-29
Locality: Mautia / Kongwa / Dodoma, Region / Tansania
Yoderit
Views (Image: 1264186188): 1227
Yoderit

Größe: 60x60 mm; Fundort: Mautia, Kongwa, Region Dodoma, Tansania

Copyright: Paul Bongaerts
Contribution: slugslayer 2010-01-22
Locality: Mautia / Kongwa / Dodoma, Region / Tansania

Collectors Summary

Color purpurrot, tiefblau, smaragdgrün, gelb
Streak color weiß
Hardness (Mohs) 6
Solubility +- Säuren
Crystal System monoklin, P21/m

Chemism

Chem­ical formula

(Mg,Al,Fe3+)8Si4(O,OH)20

Chem­ical com­po­si­tion

Aluminium, Eisen, Magnesium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 663.46659468 u; Number of atoms in the formula: 37

Info

Empirical formula:

(Mg0.6Al0.3Fe0.1)8Si4(O0.75(OH)0.25)20

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.76

5

13.51

1.0079470

5.0397350

Oxygen

O

48.23

20

54.05

15.9994300

319.9886000

Magnesium

Mg

17.58

4.8

12.97

24.3050600

116.6642880

Aluminium

Al

9.76

2.4

6.49

26.9815382

64.7556917

Silicon

Si

16.93

4

10.81

28.0855300

112.3421200

Iron

Fe

6.73

0.8

2.16

55.8452000

44.6761600

Anal­y­sis wt%

SiO2 : 36.12, CaO : 1.48, MgO : 12.23, FeO : 4.82, Al2O3 : 41.06, Fe2O3 : 0.50, H2O : 3.25 (Ref: Mineralogical Magazine 59)

Strunz 9th edi­tion incl. updates

9.AF.25

9: Silikate (Germanate)
A: Inselsilikate (Nesosilikate)
F: Insel(Neso)silikate mit zusätzlichem Anionen; Kationen in [4], [5] und/oder nur [6] Koordination
25:Yoderit-Gruppe

Lapis Clas­sifica­tion

VIII/B.02-060

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

Clas­sifica­tion by Hölzel

9.AH.220

9: SILICATES
A: Nesosilicates
H: Nesosilicates with O + (OH, OH,X, X)
2: Unclassified

Dana 8th edi­tion

52.02.02b.03

52: Nesosilicates Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O
02: Nesosilicates Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O with cations in [4] and >[4] coordination
02b: AL2SIO5 Andalusite subgroup)

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

purpurrot, tiefblau, smaragdgrün, gelb

Streak color

weiß

Diaphane­ity (Trans­parency)

transparent

max. Birefrin­gence

0.026

Birefringence chart\! Yoderite title=Birefringence chart Yoderite

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

1.689

RI value β

1.691

RI value γ / ε

1.715

Ri mean

1.698

2V angle

Biaxial (+) 25°

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

11

Space Group

P21/m

Cell param­e­ters a (Å)

8.10

Cell param­e­ters b (Å)

5.78

Cell param­e­ters c (Å)

7.28

Cell param­e­ters a/b or c/a

1.401

Cell param­e­ters c/b

1.260

Cell param­e­ters α

90°

Cell param­e­ters β

106°..

Cell param­e­ters γ

90°

Z

1

Volumne (ų)

327.632

X-Ray Pow­der Diffrac­tion

3.50(100),
3.23(70),
3.19(70),
3.03(90),
2.91(70),
2.61(80),
2.58(70),
2.00(80)

XRD chart Yoderite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

6

VHN (Hard­ness Vick­ers)

730 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.39

3.362 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+- Säuren

(Co-)Type locality

(Co-)Type locality

Tansania/Dodoma, Region/Kongwa/Mautia

Preface

Author (Name, Year)

McKie & Radford, 1959

Addi­tional Informa­tion

Benannt nach Hatten Schuyler Yoder, Jr. (* 1921), Petrologe und Direktor des Geophysischen Labors im Carnegie Institution of Washington (USA).

References

Mineralogical Magazine 32 (1959), 282

Other languages

German

Yoderit

Spanish

Yoderita

English

Yoderite

French

Yoderite

Russian

Иодерит

Russian

Йодерит

CNMNC symbol

Symbol

Yod

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

German pages

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

English pages

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

Russian pages

Webmineral.ru - search for: Иодерит

Mineral Dealer

German pages

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

Locations with GPS information