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Pertlikite (Пертликит)

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Pertlikit
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Pertlikit

Bildbreite: 3,1 mm, Fundort: Grotta dell'Allume, Porto Levante, Vulcano Insel, Messina, Sizilien, Italien

Collection: Domenico Preite
Copyright: Enrico Bonacina
Contribution: thdun5 2010-10-27
Locality: Grotta dell'Allume / Porto Levante / Vulcano, Insel / Äolische (Liparische) Inseln (Isole Eolie; Isole Lipari) / Messina, Provinz / Sizilien (Sicilia), Region / Italien

Collectors Summary

Color olivgrün bis schwarz
Streak color graugrün
Lustre Harzglanz (auf Kristallflächen Glasglanz)
Hardness (Mohs) 3
Cleavages keine
Fracture muschelig
Solubility +++ H2O
Crystal System tetragonal, I41cd
Morphology Das Mineral bildet idiomorphe Kristalle mit {111}, {100} und {211} sowie Fünflinge nach {101}, die eine Größe bis 1 cm aufweisen.

Chemism

Chem­ical formula

K2(Fe2+,Mg)2(Mg,Fe3+)4Fe3+2Al(SO4)12·18H2O

Addi­tional chem. informa­tion

Voltait Gruppe

Chem­ical com­po­si­tion

Aluminium, Eisen, Magnesium, Kalium, Sauerstoff, Schwefel, Wasserstoff

Unit weight: 1918.5837402 u; Number of atoms in the formula: 125

Info

Empirical formula:

K2(Fe0.75Mg0.25)2(Mg0.75Fe0.25)4Fe2Al(SO4)12·18H2O

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.89

36

28.80

1.0079470

36.2860920

Oxygen

O

55.04

66

52.80

15.9994300

1,055.9623800

Magnesium

Mg

4.43

3.5

2.80

24.3050600

85.0677100

Aluminium

Al

1.41

1

0.80

26.9815382

26.9815382

Sulfur

S

20.06

12

9.60

32.0655000

384.7860000

Potassium

K

4.08

2

1.60

39.0983100

78.1966200

Iron

Fe

13.10

4.5

3.60

55.8452000

251.3034000

Anal­y­sis wt%

SO3 : 49.58, Al2O3 : 2.64, Fe2O3 : 14.78, FeO : 4.20, MgO : 6.26, MnO : 0.97, K2O : 4.80, H2O : 16.72 (Ref: Canadian Mineralogist 2008)

Strunz 9th edi­tion incl. updates

7.CC.25

7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate)
C: Sulfate (Selenate, etc.) ohne weitere Anionen, mit H2O
C: Mit mittelgroßen und großen [Kationen]
25:Voltait-Gruppe

Lapis Clas­sifica­tion

VI/C.14-048

VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE
C: Wasserhaltige Sulfate, ohne fremde Anionen
14: Mittelgroße und sehr große Kationen

Clas­sifica­tion by Hölzel

7.CD.605

7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES
C: Sulfates (-Anions +Water)
D: Sulfates, C medium + large
6: Voltaite-Group

IMA sta­tus

anerkannt 2005

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Voltaite group

Optical Properties

Color

olivgrün bis schwarz

Streak color

graugrün

Diaphane­ity (Trans­parency)

durchscheinend

Lus­tre

Harzglanz (auf Kristallflächen Glasglanz)

max. Birefrin­gence

0.004

Birefringence chart\! Pertlikite title=Birefringence chart Pertlikite

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

1.590

RI value γ / ε

1.586

Ri mean

1.589

2V angle

Uniaxial (-)

Crystallography

Crystal Sys­tem

tetragonal

Class (H-M)

4mm

Space Group number

110

Space Group

I41cd

Cell param­e­ters a (Å)

19.208

Cell param­e­ters b (Å)

-

Cell param­e­ters c (Å)

27.216

Cell param­e­ters a/b or c/a

1.417

Cell param­e­ters c/b

-

Cell param­e­ters α

90°

Cell param­e­ters β

90°

Cell param­e­ters γ

90°

Z

8

Volumne (ų)

10041.269

X-Ray Pow­der Diffrac­tion

5.543(28), 3.396(100), 3.136(21), 3.038(39), 2.848(31), 2.534(21), 2.078(29), 1.601(21)

XRD chart Pertlikite

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

Morphol­ogy

Das Mineral bildet idiomorphe Kristalle mit {111}, {100} und {211} sowie Fünflinge nach {101}, die eine Größe bis 1 cm aufweisen.

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

3

Density (g/cm³)

2.59 gem.

2.538 ( ρ calc. Mineralienatlas )

Cleav­ages

keine

Frac­ture

muschelig

Insta­bil­ity

+++ H2O

(Co-)Type locality

(Co-)Type locality

Iran/Hormozgan, Provinz/Bandar Abbas, Bezirk/Haji Abad/Zagh Mine (Madeni Zakh)

Par­a­ge­n­e­sis of type mate­r­ial

Metavoltin, Botryogen, Pyrit, Alunit

Preface

Name from

Professor für Mineralogie und Kristallographie Franz Pertlik Universität Wien, Österreich

References

Mineralien Welt 05/09, Steffen Jahn, Neue Mineralien

IMA group assignments


 
 
(NH4)2Mg5Fe3+3Al(SO4)12·18H2O
kubisch
Fd3c

 
 
(NH4)2Fe2+5Fe3+3Al(SO4)12(H2O)18
kubisch
Fd3c

 
 
K2Mg5Fe3+3Al(SO4)12·18H2O
kubisch
Fd3c

 
 
K2(Fe2+,Mg)2(Mg,Fe3+)4Fe3+2Al(SO4)12·18H2O
tetragonal
I41cd

 
 
K2Fe52+Fe43+(SO4)12·18 H2O
kubisch
Fd3c

 
 
K2(Zn,Fe2+,Mn)5Fe33+Al(SO4)12·18H2O
kubisch
Fd3c

Refresh list

Actuality: 11. Jul 2020 - 14:19:06

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

Ammoniomagnesiovoltaite

(NH4)2Mg5Fe3+3Al(SO4)12·18H2O

kubisch : m3m : Fd3c

7.CC.25

Pertlikite

K2(Fe2+,Mg)2(Mg,Fe3+)4Fe3+2Al(SO4)12·18H2O

tetragonal : 4mm : I41cd

7.CC.25

Voltaite

K2Fe52+Fe43+(SO4)12·18 H2O

kubisch : m3m : Fd3c

7.CC.25

Zincovoltaite

K2(Zn,Fe2+,Mn)5Fe33+Al(SO4)12·18H2O

kubisch : m3m : Fd3c

7.CC.25

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

Alum-(Na)

NaAl(SO4)2·12H2O

kubisch : m3 : Pa3

VI/C.14-010

Alum-(K)

KAl(SO4)2·12H2O

kubisch : m3 : Pa3

VI/C.14-020

Tschermigite

(NH4)Al(SO4)2·12H2O

kubisch : m3 : Pa3

VI/C.14-030

Lonecreekite

(NH4)(Fe3+,Al)(SO4)2·12H2O

kubisch : m3 : Pa3

VI/C.14-040

Lanmuchangite

TlAl[SO4]2·12H2O

kubisch : m3 : Pa3

VI/C.14-045

Pertlikite

K2(Fe2+,Mg)2(Mg,Fe3+)4Fe3+2Al(SO4)12·18H2O

tetragonal : 4mm : I41cd

VI/C.14-048

Voltaite

K2Fe52+Fe43+(SO4)12·18 H2O

kubisch : m3m : Fd3c

VI/C.14-050

Zincovoltaite

K2(Zn,Fe2+,Mn)5Fe33+Al(SO4)12·18H2O

kubisch : m3m : Fd3c

VI/C.14-060

Ammoniomagnesiovoltaite

(NH4)2Mg5Fe3+3Al(SO4)12·18H2O

kubisch : m3m : Fd3c

VI/C.14-070

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

Voltaite

K2Fe52+Fe43+(SO4)12·18 H2O

kubisch : m3m : Fd3c

7.CD.600

Pertlikite

K2(Fe2+,Mg)2(Mg,Fe3+)4Fe3+2Al(SO4)12·18H2O

tetragonal : 4mm : I41cd

7.CD.605

Ammoniomagnesiovoltaite

(NH4)2Mg5Fe3+3Al(SO4)12·18H2O

kubisch : m3m : Fd3c

7.CD.607

Zincovoltaite

K2(Zn,Fe2+,Mn)5Fe33+Al(SO4)12·18H2O

kubisch : m3m : Fd3c

7.CD.610

Metavoltine

K2Na6Fe2+Fe63+(SO4)12O2·18 H2O

trigonal : 3 : P3

7.CD.620

Löweite

Na12Mg7(SO4)13·15H2O

trigonal : 3 : R3

7.CD.640

Other languages

German

Pertlikit

English

Pertlikite

Russian

Пертликит

IMA Number

IMA 2005-055

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