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Paramendozavilite (Paramendozavilit)

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Paramendozavilit
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Paramendozavilit
Bildbreite: 3 mm; Fundort: Cumobabi, La Verde District, Mun. de Moctezuma, Sonora, Mexiko
Copyright: Christian Rewitzer; Contribution: Hg
Location: Mexiko/Sonora/Moctezuma, Municipio/La Verde/Cumobabi
Mineral: Paramendozavilite
Image: 1191091004
Rating: 7.5 (votes: 2)
License: Usage for Mineralienatlas project only
Paramendozavilit

Bildbreite: 3 mm; Fundort: Cumobabi, La Verde District, Mun. de Moctezuma, Sonora, Mexiko
Copyright: Christian Rewitzer
Contribution: Hg 2007-09-29
Locality: Cumobabi / La Verde / Moctezuma, Municipio / Sonora / Mexiko

Collectors Summary

Color blassgelb
Streak color gelblichweiß
Lustre Glasglanz
Hardness (Mohs) 1
Cleavages vollkommen
Solubility +++ Säuren
Crystal System monoklin,

Chemism

Chemical formula

[KAl4(H2O)30][Mo12P6Fe3+6O60(OH)13]

Chemical composition

Aluminium, Eisen, Molybdän, Kalium, Phosphor, Sauerstoff, Wasserstoff

Unit weight: 3540.763651 u; Number of atoms in the formula: 205

Info

Empirical formula:

[KAl4(H2O)30][Mo12P6Fe6O60(OH)13]

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

2.08

73

35.61

1.0079470

73.5801310
Oxygen

O

46.54

103

50.24

15.9994300

1,647.9412900
Aluminium

Al

3.05

4

1.95

26.9815382

107.9261528
Phosphorus

P

5.25

6

2.93

30.9737612

185.8425672
Potassium

K

1.10

1

0.49

39.0983100

39.0983100
Iron

Fe

9.46

6

2.93

55.8452000

335.0712000
Molybdenum

Mo

32.52

12

5.85

95.9420000

1,151.3040000

Analysis wt%

Fe2O3 : 13.36, Al2O3 : 4.65, CaO : 0.59, Na2O : 0.54, P2O5 : 10.32, MoO3 : 42.01, Cl : 0.65, H2O : 28.05 (Ref: Bulletin de Mineralogie SMex.86)

Strunz 9th edition incl. updates

7.GB.45

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
G: Molybdate und Wolframate
B: Mit zusätzlichen [Anionen] und/oder H2O
45:Mendozavilit-Gruppe

Lapis Classification

VII/C.33-050

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
C: Wasserhaltige Phosphate, ohne fremde Anionen
33: Mittelgroße und große Kationen: Fe-Mn-Zn-Mg und Ca-(NH4) 1+; Molybdophosphate und ähnliche Verbindungen

Classification by Hölzel

8.DR.280

8: PHOSPHATES ARSENATES VANADATES
D: Phosphates (+Anions +Water)
R: Heteropolymolybdates
2: monoclinic Heteropolymolybdates

Dana 8th edition

49.04.06.01

49: Basic and Hydrated Molybdates and Tungstates
04: Basic and Hydrated Molybdates and Tungstates (Compound Anions)

IMA status

anerkannt

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

 Heteropolymolybdate family

Optical Properties

Color

blassgelb

Streak color

gelblichweiß

Diaphaneity (Transparency)

durchscheinend

Lustre

Glasglanz

max. Birefringence

0.034
Birefringence chart\! Paramendozavilite title=Birefringence chart Paramendozavilite

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

1.686

RI value β

1.710

RI value γ / ε

1.720

Ri mean

1.705

2V angle

Biaxial (-) 60° (gemessen) 64.9° (berechnet)

Absorption

Z > Y > X

Pleochroism

schwach gelb

Crystallography

Crystal System

monoklin

Cell parameters a (Å)

10.963

Cell parameters b (Å)

25.881

Cell parameters c (Å)

15.434

Cell parameters a/b or c/a

0.424

Cell parameters c/b

0.596

Cell parameters α

90°

Cell parameters β

110.73°

Cell parameters γ

90°

Z

2

Volumne (ų)

4095.631

X-Ray Powder Diffraction

14.36(100),
12.90(40),
10.18(60),
9.48(100),
7.98(50),
7.38(70),
7.16(40),
6.56(50)
XRD chart Paramendozavilite

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

Physical Properties

Hardness (Mohs)

1

Density (g/cm³)

2.858 (berechnet) 3.35 (gemessen)

2.871 ( ρ calc. Mineralienatlas )

Cleavages

vollkommen

Instability

+++ Säuren

Chemical Properties and Tests

einfach löslich in verdünnten Säuren

(Co-)Type locality

(Co-)Type locality

Mexiko/Sonora/Moctezuma, Municipio/La Verde/Cumobabi

Preface

Author (Name, Year)

Williams, 1986

References

Boletín de Mineralogía (Mexico City) 2 (1986), 13

The heteropolymolybdate family: structural relations, nomenclature scheme and new species - Mineralogical Magazine, October 2012, Vol. 76(5), pp. 1175–1207

IMA group assignments

 
Heteropolymolybdate family
 
 
 

 
 
Betpakdalite supergroup
 
 
 

 
 
 
Betpakdalite group
 
 
 

 
 
 
 
Betpakdalite-CaCa
[Ca2(H2O)17Ca(H2O)6][Mo8As2Fe3+3O36(OH)]
monoklin
C2/m

 
 
 
 
Betpakdalite-CaMg
[Ca2(H2O)17Mg(H2O)6][Mo8As2Fe3+3O36(OH)]
monoklin
C2/m

 
 
 
 
Betpakdalite-FeFe
[Fe3+2(H2O)15(OH)2Fe3+(H2O)6][Mo8As2Fe3+3O37]
monoklin
C2/m

 
 
 
 
Betpakdalite-NaCa
[Na2(H2O)17Ca(H2O)6][Mo8As2Fe3+3O34(OH)3]
monoklin
C2/m

 
 
 
 
Betpakdalite-NaNa
[Na2(H2O)16Na(H2O)6][Mo6+8As5+2Fe3+3O33(OH)4]
monoklin
C2/m

 
 
 
Mendozavilite group
 
 
 

 
 
 
 
Mendozavilite-KCa
[K2(H2O)15Ca(H2O)6][Mo8P2Fe3+3O34(OH)3]
monoklin
C2/m

 
 
 
 
Mendozavilite-NaCu
[Na2(H2O)15Cu(H2O)6][Mo8P2Fe3+3O34(OH)3]
monoklin
C2/m

 
 
 
 
Mendozavilite-NaFe
[Na2(H2O)15Fe3+(H2O)6][Mo8P2Fe3+3O35(OH)2]
monoklin
C2/m

 
 
Obradovicite group
 
 
 

 
 
 
Obradovicite-KCu
[K2(H2O)17Cu2+(H2O)6][Mo8As2Fe3+3O34(OH)3]
orthorhombisch
Pnmb

 
 
 
Obradovicite-NaCu
[Na2(H2O)17Cu(H2O)6][Mo8As2Fe3+3O34(OH)3]
orthorhombisch
Pnmb

 
 
 
Obradovicite-NaNa
[Na2(H2O)16Na(H2O)6][Mo8As2Fe3+3O33(OH)4]
orthorhombisch
Pnmb

 
 
Paramendozavilite
[KAl4(H2O)30][Mo12P6Fe3+6O60(OH)13]
monoklin
 

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Actuality: 29. Jan 2023 - 19:16:20

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Парамендоцавилит

CNMNC (IMA)-Number

IMA 1982-010

CNMNC symbol

Symbol

Pmdz