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Wilcoxite

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Wilcoxit
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Wilcoxit

Weißer Wilcoxit als Stollenneubildung von der Lone Pine Mine, Lone Pine Hill area, Wilcox District, Catron Co., New Mexico, USA. Bildbreite 5 mm.

Collection: Yi Sun
Copyright: Yi Sun
Contribution: sun-mineral 2019-08-27
Locality: Lone Pine Mine / Lone Pine Hill Area / Wilcox District / Catron Co. / New Mexico / USA

Collectors Summary

Color farblos
Streak color weiß
Hardness (Mohs) 2
Solubility +++ H2O
Crystal System triklin, P1, P1

Chemism

Chem­ical formula

MgAl(SO4)2F·18H2O

Chem­ical com­po­si­tion

Aluminium, Magnesium, Fluor, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 586.68727345 u; Number of atoms in the formula: 67

Info

Empirical formula:

MgAl(SO4)2F·18H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

6.18

36

53.73

1.0079470

36.2860920

Oxygen

O

70.90

26

38.81

15.9994300

415.9851800

Fluorine

F

3.24

1

1.49

18.9984033

18.9984033

Magnesium

Mg

4.14

1

1.49

24.3050600

24.3050600

Aluminium

Al

4.60

1

1.49

26.9815382

26.9815382

Sulfur

S

10.93

2

2.99

32.0655000

64.1310000

Anal­y­sis wt%

MgO : 6.61, Al2O3 : 8.13, Fe2O3 : 0.46, SO3 : 27.50, H2O : 56.40, F : 3.48 (Ref: Mineralogical Magazine 83)

Strunz 9th edi­tion incl. updates

7.DB.05

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
D: Sulfate (Selenate, etc.) mit weitere Anionen, mit H2O
B: mit mittelgroßen Kationen; isolierte Oktaeder und begrenzte Einheiten
05:Aubertit-Gruppe

Lapis Clas­sifica­tion

VI/D.07-010

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
D: Wasserhaltige Sulfate, mit fremden Anionen
7: Mittelgroße Kationen

Clas­sifica­tion by Hölzel

7.DC.560

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
D: Sulfates (+Anions +Water)
C: Copiapite-Group

Dana 8th edi­tion

31.09.09.01

31: Hydrated Sulfates Containing Hydroxyl or Halogen
09: Hydrated Sulfates Containing Hydroxyl or Halogen where (A+ B++) (XO4) Zq·x(H2O)

IMA sta­tus

Anerkannt von der CNMNC

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

farblos

Streak color

weiß

max. Birefrin­gence

0.014

Birefringence chart\! Wilcoxite title=Birefringence chart Wilcoxite

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

1.424

RI value β

1.436

RI value γ / ε

1.438

Ri mean

1.433

2V angle

Biaxial (-) 48°

Crystallography

Crystal Sys­tem

triklin

Class (H-M)

1, 1

Space Group number

1, 2

Space Group

P1, P1

Cell param­e­ters a (Å)

14.90

Cell param­e­ters b (Å)

6.65

Cell param­e­ters c (Å)

6.77

Cell param­e­ters a/b or c/a

2.241

Cell param­e­ters c/b

1.018

Cell param­e­ters α

117.43

Cell param­e­ters β

100.58

Cell param­e­ters γ

89.17

Z

1

Volumne (ų)

583.376

X-Ray Pow­der Diffrac­tion

5.877(40),
5.654(90),
4.908(100),
4.371(60),
4.117(40),
3.384(50),
2.980(40),
2.834(40)

XRD chart Wilcoxite

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)

2

VHN (Hard­ness Vick­ers)

32 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

1.58 (gemessen)

1.67 ( ρ calc. Mineralienatlas )

Insta­bil­ity

+++ H2O

Preface

Author (Name, Year)

Williams & Cesbron, 1983

References

Mineralogical Magazine 47 (1983), 37

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Aubertite

CuAl(SO4)2Cl·14H2O

triklin : 1 : P1

7.DB.05

Wilcoxite

MgAl(SO4)2F·18H2O

triklin : 1, 1 : P1, P1

7.DB.05

Svyazhinite

(Mg,Mn)(Al,Fe3+)(SO4)2F·14 H2O

triklin : 1, 1 : P1, P1

7.DB.05

Magnesioaubertite

(Mg,Cu)Al(SO4)2Cl·14 H2O

triklin : P1 : 1

7.DB.05

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Wilcoxite

MgAl(SO4)2F·18H2O

triklin : 1, 1 : P1, P1

VI/D.07-010

Svyazhinite

(Mg,Mn)(Al,Fe3+)(SO4)2F·14 H2O

triklin : 1, 1 : P1, P1

VI/D.07-020

Magnesioaubertite

(Mg,Cu)Al(SO4)2Cl·14 H2O

triklin : P1 : 1

VI/D.07-030

Aubertite

CuAl(SO4)2Cl·14H2O

triklin : 1 : P1

VI/D.07-040

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Magnesioaubertite

(Mg,Cu)Al(SO4)2Cl·14 H2O

triklin : P1 : 1

7.DC.500

Aubertite

CuAl(SO4)2Cl·14H2O

triklin : 1 : P1

7.DC.510

Svyazhinite

(Mg,Mn)(Al,Fe3+)(SO4)2F·14 H2O

triklin : 1, 1 : P1, P1

7.DC.520

Wilcoxite

MgAl(SO4)2F·18H2O

triklin : 1, 1 : P1, P1

7.DC.560

Related minerals "Dana 8. Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Butlerite

Fe3+(SO4)(OH)·2H2O

monoklin : 2/m : P21/m

31.09.01.01

Parabutlerite

Fe3+(SO4)(OH)·2H2O

orthorhombisch : mmm : Pmnb

31.09.02.01

Amarantite

Fe3+2O(SO4)2(H2O)4·3H2O

triklin : 1 : P1

31.09.03.01

Hohmannite

Fe23+(SO4)2(OH)2·7H2O

triklin : 1 : P1

31.09.04.01

Metahohmannite

Fe23+(SO4)2(OH)2·3H2O

triklin : 1 : P1

31.09.05.01

Botryogen

MgFe3+(SO4)2(OH)·7H2O

monoklin : 2/m : P21/n

31.09.06.01

Zincobotryogen

ZnFe3+(SO4)2(OH)·7H2O

monoklin : 2/m : P21/n

31.09.06.02

Xitieshanite

Fe3+(SO4)Cl·6H2O

monoklin : 2/m : P21/a

31.09.06.03

Guildite

CuFe3+(SO4)2(OH)·4H2O

monoklin : 2/m : P21/m

31.09.07.01

Chaidamuite

(Zn,Fe2+)Fe3+OH(SO4)2·4H2O

triklin : 1 : P1

31.09.07.02

Aubertite

CuAl(SO4)2Cl·14H2O

triklin : 1 : P1

31.09.08.01

Svyazhinite

(Mg,Mn)(Al,Fe3+)(SO4)2F·14 H2O

triklin : 1, 1 : P1, P1

31.09.08.02

Magnesioaubertite

(Mg,Cu)Al(SO4)2Cl·14 H2O

triklin : P1 : 1

31.09.08.03

Wilcoxite

MgAl(SO4)2F·18H2O

triklin : 1, 1 : P1, P1

31.09.09.01

Other languages

German

Wilcoxit

Spanish

Wilcoxita

English

Wilcoxite

French

Wilcoxite

Russian

Вилкоксит

IMA Number

IMA 1979-070

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

German pages

DeWikiPedia - search for: Wilcoxit
Google-Bilder-Suche - search for: Wilcoxit
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English pages

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Handbook-of-Mineralogy - search for: Wilcoxite
RRUFF - Raman, XRD and other mineral data - search for: Wilcoxite
RRUFF - References and PDF downloads - search for: Wilcoxite
American-Mineralogist-Crystal-Structure-Database - search for: Wilcoxite
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Russian pages

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German pages

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Locations with GPS information