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Minyulite (Minyulit)

Pictures (25 Images total)

Minyulit
Views (File:
1288258268
): 1730, Rating: 8.75
Minyulit
Größe: 1,66 mm; Fundort: Pereta Mine, Pereta, Scansano, Toscana, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Italien/Toskana (Toscana)/Grosseto, Provinz/Scansano/Pereta/Pereta Mine
Mineral: Minyulite
Image: 1288258268
Rating: 8.75 (votes: 8)
License: Usage for Mineralienatlas project only
Minyulit

Größe: 1,66 mm; Fundort: Pereta Mine, Pereta, Scansano, Toscana, Italien
Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2010-10-28
Locality: Pereta Mine / Pereta / Scansano / Grosseto, Provinz / Toskana (Toscana) / Italien
Minyulit
Views (File:
1272012506
): 1595
Minyulit
Größe: 2,69 mm; Fundort: Pereta Mine, Pereta, Scansano, Toscana, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Italien/Toskana (Toscana)/Grosseto, Provinz/Scansano/Pereta/Pereta Mine
Mineral: Minyulite
Image: 1272012506
Rating: 9.33 (votes: 3)
License: Usage for Mineralienatlas project only
Minyulit

Größe: 2,69 mm; Fundort: Pereta Mine, Pereta, Scansano, Toscana, Italien
Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2010-04-23
Locality: Pereta Mine / Pereta / Scansano / Grosseto, Provinz / Toskana (Toscana) / Italien
Minyulit
Views (File:
1288258369
): 812
Minyulit
Bildbreite: 9,93 mm; Fundort: Pereta Mine, Pereta, Scansano, Toscana, Italien
Copyright: Matteo Chinellato; Contribution: Hg
Collection: Domenico Preite
Location: Italien/Toskana (Toscana)/Grosseto, Provinz/Scansano/Pereta/Pereta Mine
Mineral: Minyulite
Image: 1288258369
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Minyulit

Bildbreite: 9,93 mm; Fundort: Pereta Mine, Pereta, Scansano, Toscana, Italien
Collection: Domenico Preite
Copyright: Matteo Chinellato
Contribution: Hg 2010-10-28
Locality: Pereta Mine / Pereta / Scansano / Grosseto, Provinz / Toskana (Toscana) / Italien
Minyulit
Views (File:
1399140836
): 638
Minyulit
Nadelige farblose Kristalle, BB = 3,8 mm; Fundort: St. Johns Quarry, Kapunda, South Australia, Australien.
Copyright: Bebo; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A016413, Donator: Manfred Winkler
Location: Australien/South Australia/Mt. Lofty Ranges/Kapunda
Mineral: Minyulite
Image: 1399140836
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Minyulit (SNr: A016413)

Nadelige farblose Kristalle, BB = 3,8 mm; Fundort: St. Johns Quarry, Kapunda, South Australia, Australien.
Collection: Lithothek der Münchener Micromounter
Copyright: Bebo
Contribution: Münchener Micromounter 2014-05-03
Locality: Kapunda / Mt. Lofty Ranges / South Australia / Australien
Minyulit
Views (File:
1407685505
): 441
Minyulit
Prismatische farblose Kristalle, Bildbreite = 3,8 mm; Fundort: Tom's Phosphate Quarry, Kapunda, South Australia, Australien.
Copyright: Bebo; Contribution: Münchener Micromounter
Collection: Lithothek der Münchener Micromounter, Collection number: A020786, Donator: Vince Peisley
Location: Australien/South Australia/Mt. Lofty Ranges/Kapunda/Tom's Phosphate Quarry
Mineral: Minyulite
Image: 1407685505
Rating: 9 (votes: 1)
License: Usage for Mineralienatlas project only
Minyulit (SNr: A020786)

Prismatische farblose Kristalle, Bildbreite = 3,8 mm; Fundort: Tom's Phosphate Quarry, Kapunda, South Australia, Australien.
Collection: Lithothek der Münchener Micromounter
Copyright: Bebo
Contribution: Münchener Micromounter 2014-08-10
Locality: Tom's Phosphate Quarry / Kapunda / Mt. Lofty Ranges / South Australia / Australien
Sincosit mit Minyulit
Views (File:
1263484714
): 1325, Rating: 8
Sincosit mit Minyulit
Bildbreite: 5 mm; Fundort: Ross Hannibal Mine, Lawrence Co., South Dakota, USA
Copyright: Stephan Wolfsried; Contribution: Hg
Location: USA/South Dakota/Lawrence Co./Lead District/Ross Hannibal Mine
Mineral: Minyulite, Sincosite
Image: 1263484714
Rating: 8 (votes: 4)
License: Usage for Mineralienatlas project only
Sincosit mit Minyulit

Bildbreite: 5 mm; Fundort: Ross Hannibal Mine, Lawrence Co., South Dakota, USA
Copyright: Stephan Wolfsried
Contribution: Hg 2010-01-14
Locality: Ross Hannibal Mine / Lead District / Lawrence Co. / South Dakota / USA

You find additional Minyulit specimen at the Geolitho Museum

Collectors Summary

Color gelb
Streak color weiß
Lustre Glasglanz
Hardness (Mohs) 3.5
Solubility +++ Säuren
Crystal System orthorhombisch, Pba2

Additional information / Summary

IMA Vorschlag 21-E: die Formel von Minyulit wird neu definiert als KAl2(PO4)2F⋅4H2O, basierend auf neuen EMPA-Daten, die am Holotypmaterial gewonnen wurden und die bestätigen, dass das Mineral (OH)-frei ist und F als artenbildenden Bestandteil hat.
Grey, I.E., MacRae, C., Elliott, P. et al.: Minyulite, approval of revised formula and its stability in South Australian rock phosphate deposits. Australian Journal of Mineralogy Vol. 23, Nr. 1 (2022) S. 21-25.

Chemism

Chemical formula

KAl2(PO4)2F⋅4H2O

Chemical composition

Aluminium, Fluor, Kalium, Phosphor, Sauerstoff, Wasserstoff

Unit weight: 320.01807605 u; Number of atoms in the formula: 17

Info

Empirical formula:

KAl2(PO4)2F⋅4H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.63

2

11.76

1.0079470

2.0158940
Oxygen

O

45.00

9

52.94

15.9994300

143.9948700
Fluorine

F

5.94

1

5.88

18.9984033

18.9984033
Aluminium

Al

16.86

2

11.76

26.9815382

53.9630764
Phosphorus

P

19.36

2

11.76

30.9737612

61.9475224
Potassium

K

12.22

1

5.88

39.0983100

39.0983100

Analysis wt%

P2O5 : 38.00, Al2O3 : 27.79, Fe2O3 : 0.80, MgO : 0.80, CaO : 0.76, K2O : 10.35, F : 2.70, H2O : 20.40 (Ref: Mineralogical Magazine 43)

Strunz 9th edition incl. updates

8.DH.05

8: Phosphate, Arsenate, Vanadate
D: Phosphate, mit weiteren Anionen, mit H2O
H: Mit großen und mittelgroßen [Kationen], (OH, etc.):RO4 < 1:1
05:Minyulit-Gruppe

Lapis Classification

VII/D.27-040

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
D: Wasserhaltige Phosphate, mit fremden Anionen
27: Mittelgroße und sehr große Kationen: Al-Mg und Ca-Na-K

Classification by Hölzel

8.DI.300

8: PHOSPHATES ARSENATES VANADATES
D: Phosphates (+Anions +Water)
I: C large, V=1(2) - C small-medium, V=2,3,4
3: C small-medium, V=3 - XO4/OH=2 Leucophosphit-Group

Dana 8th edition

42.11.05.01

42: Hydrated Phosphates, etc., Containing Hydroxyl or Halogen
11: Hydrated Phosphates, etc., Containing Hydroxyl or Halogen where (AB)4 (XO4)3 Zq · x(H2O)

IMA status

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Mineral status

anerkanntes Mineral

Optical Properties

Color

gelb

Streak color

weiß

Lustre

Glasglanz

max. Birefringence

0.007
Birefringence chart\! Minyulite title=Birefringence chart Minyulite

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

1.531

RI value β

1.534

RI value γ / ε

1.538

Ri mean

1.534

2V angle

Biaxial (+)- 90°

Optical Data Luminescence

Color LW-UV (365nm)

  

weiß

Color SW-UV (254nm)

  

weiß

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mm2

Space Group number

32

Space Group

Pba2

Cell parameters a (Å)

9.337

Cell parameters b (Å)

9.740

Cell parameters c (Å)

5.522

Cell parameters a/b or c/a

0.959

Cell parameters c/b

0.567

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

2

Volumne (ų)

502.184

X-Ray Powder Diffraction

6.75(30),
5.53(100),
3.40(50),
3.35(60),
3.07(30),
2.68(30),
2.61(30),
2.13(30)
XRD chart Minyulite

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)

3.5

VHN (Hardness Vickers)

130 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.46 (gemessen)

2.116 ( ρ calc. Mineralienatlas )

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

Australien/Western Australia/Dandaragan/Minyulo Well

Preface

Associations

Quarz

Name from

Typlokalität Minyulo Well

Author (Name, Year)

Simpson & LeMesurier, 1933

References

Handbook of Mineralogy (Anthony et al.), 4 (2000), 377

CNMNC Newsletter 63, Aug - Sept 2021: IMA 21-E: Redefinition of minyulite

Grey, I.E., MacRae, C., Elliott, P. et al.: Minyulite, approval of revised formula and its stability in South Australian rock phosphate deposits. Australian Journal of Mineralogy Vol. 23, Nr. 1 (2022) S. 21-25.

Other languages

German

Minyulit

Spanish

Minyulita

French

Minyulite

English

Minyulite

Russian

Миниюлит

Simplified Chinese

水磷钾铝石

CNMNC symbol

Symbol

Myu

Locations with GPS information