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Pennantite

Pictures (3 Images total)

Pennantit
Views (Image: 1271680295): 1074
Pennantit

Bildbreite: 3,6 mm, Fundort: Miniera Valgraveglia (Miniera Gambatesa), Reppia, Val Graveglia, Ne, Genova, Ligurien (Liguria), Italien

Collection: Domenico Preite
Copyright: Enrico Bonacina
Contribution: thdun5 2010-04-19
Locality: Miniera Valgraveglia (Gambatesa) / Reppia / Val Graveglia / Ne / Genua (Genova), Metropolitanstadt / Ligurien (Liguria), Region / Italien
Pennantit xx auf Quarz xx
Views (Image: 1395174517): 602
Pennantit xx auf Quarz xx (SNr: 769)

Mineralien:Pennantit xx(rot-braune glimmerartige xx); Fundort: Mine Gambatesa, Val Graveglia, Italien; Bestimmung: optisch Bestimmt WF; Bildbreite: 2,2 mm

Collection: Florian
Copyright: Florian
Contribution: Florian 2014-03-18
Locality: Miniera Valgraveglia (Gambatesa) / Reppia / Val Graveglia / Ne / Genua (Genova), Metropolitanstadt / Ligurien (Liguria), Region / Italien
Pennantit xx auf Quarz xx
Views (Image: 1395174604): 594
Pennantit xx auf Quarz xx (SNr: 769)

Mineralien:Pennantit xx(rot-braune glimmerartige xx); Fundort: Mine Gambatesa, Val Graveglia, Italien; Bestimmung: optisch Bestimmt WF; Bildbreite: 1,9 mm

Collection: Florian
Copyright: Florian
Contribution: Florian 2014-03-18
Locality: Miniera Valgraveglia (Gambatesa) / Reppia / Val Graveglia / Ne / Genua (Genova), Metropolitanstadt / Ligurien (Liguria), Region / Italien

Collectors Summary

Color orangebraun, rotbraun, braun, dunkelrot, dunkelgrün, schwarz
Streak color bräunlich gelb
Lustre Perlglanz auf Spaltflächen
Hardness (Mohs) 2.5
Cleavages vollkommen {001}
Crystal System monoklin, C2/m

Chemism

Chem­ical formula

Mn2+5Al(Si3Al)O10(OH)8

Chem­ical com­po­si­tion

Aluminium, Mangan, Silicium, Sauerstoff, Wasserstoff

Unit weight: 708.9632319 u; Number of atoms in the formula: 36

Info

Empirical formula:

Mn5Al(Si3Al)O10(OH)8

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.14

8

22.22

1.0079470

8.0635760

Oxygen

O

40.62

18

50.00

15.9994300

287.9897400

Aluminium

Al

7.61

2

5.56

26.9815382

53.9630764

Silicon

Si

11.88

3

8.33

28.0855300

84.2565900

Manganese

Mn

38.75

5

13.89

54.9380499

274.6902495

Anal­y­sis wt%

SiO2 : 22.00, Al2O3 : 18.80, Fe2O3 : 4.10, MnO : 43.40, MgO : 0.80, H2O : 9.00 (Ref: Mineralogical Magazine 55)

Strunz 9th edi­tion incl. updates

9.EC.55

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
C: Schichtsilikate (Phyllosilikate) mit Glimmer Tafeln, zusammengesetzt aus tetrahedralen oder octahedralen Netzen
55:Chlorit Gruppe

Lapis Clas­sifica­tion

VIII/H.23-060

VIII: SILIKATE
H: Schichtsilikate
23: Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen; Chlorit-Gruppe

Clas­sifica­tion by Hölzel

9.EJ.440

9: SILICATES
E: Phyllosilicates
J: SudoiteChlorite-Group

IMA sta­tus

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

Min­eral sta­tus

anerkanntes Mineral

IMA Classification

IMA Clas­sifica­tion

Chlorite group

Optical Properties

Color

orangebraun, rotbraun, braun, dunkelrot, dunkelgrün, schwarz

Streak color

bräunlich gelb

Change in color

in Dürchlicht orange, rosafarben, rötlichorange

Diaphane­ity (Trans­parency)

durchscheinend, opak

Lus­tre

Perlglanz auf Spaltflächen

max. Birefrin­gence

0.015

Birefringence chart\! Pennantite title=Birefringence chart Pennantite

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

1.646

RI value β

1.661

RI value γ / ε

1.661

Ri mean

1.656

2V angle

Biaxial (-) 0°~

Absorp­tion

Y = Z > X

Pleochro­ism

X = pinkorange, lederfarben, rötlichbraun; Y = Z = orange, gelblichorange, sehr dunkelbraun

Optical Data Luminescence

Color LW-UV (365nm)

 

rot

LW-UV Intensity

schwach

Most Common Acti­vator

Cr3+

After­glow (Per­sistant Lumi­nes­cence)

keine Daten

Crystallography

Crystal Sys­tem

monoklin

Class (H-M)

2/m

Space Group number

12

Space Group

C2/m

Cell param­e­ters a (Å)

5.47

Cell param­e­ters b (Å)

9.47

Cell param­e­ters c (Å)

14.29

Cell param­e­ters a/b or c/a

0.578

Cell param­e­ters c/b

1.509

Cell param­e­ters α

90°

Cell param­e­ters β

97.3°

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

734.235

X-Ray Pow­der Diffrac­tion

7.12(100),
3.56(90),
2.646(70),
2.600(50),
2.431(50),
2.302(50),
2.034(60),
1.578(100)

XRD chart Pennantite

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

Crystals 3D

Open larger view

Physical Properties

Hard­ness (Mohs)

2.5

VHN (Hard­ness Vick­ers)

53 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.06

3.207 ( ρ calc. Mineralienatlas )

Cleav­ages

vollkommen {001}

Preface

Name from

Thomas Pennant

Thomas Pennant (1726 - 1798), walisischer Mineraloge. WikiPedia:Thomas_Pennant

Author (Name, Year)

Smith & Bannister & Hey, 1946

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 635

IMA group assignments

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

Nimite

(Ni,Mg,Fe2+)5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

9.EC.55

Odinite

(Fe3+,Mg,Al,Fe2+,Ti,Mn)2.4(Si1.8Al0.2)O5(OH)4

9.EC.55

Sudoite

Mg2Al3(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

9.EC.55

'Chlorite group'

(Fe,Mg,Al)6(Si,Al)4O10(OH)8

9.EC.55

Cookeite

LiAl4(Si3Al)O10(OH)8

triklin : 1 : C1

9.EC.55

Chamosite

(Fe2+,Mg,Fe3+)5Al(Si3Al)O10(OH,O)8

monoklin : 2/m : C2/m

9.EC.55

'Delessite' (Var.v. Chamosite)

(Mg,Fe,Fe,Al)(Si,Al)4O10(O,OH)8

9.EC.55

Gonyerite

Mn2+5Fe3+(Si3Fe3+O10)(OH)8

9.EC.55

Donbassite

Al2.3[(OH)8|AlSi3O10]

monoklin : 2 : C2

9.EC.55

'Odinite-1T' (Pol.v. Odinite)

(Fe,Mg,Al)2.5(Si,Al)2O5(OH)4

9.EC.55

Pennantite

Mn2+5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

9.EC.55

Glagolevite

NaMg6[(OH,O)8|AlSi3O10]·H2O

triklin : 1 : C1

9.EC.55

Clinochlore

(Mg,Fe2+)5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

9.EC.55

Baileychlore

(Zn,Fe2+,Al,Mg)6(Si,Al)4O10(OH)8

triklin : 1, 1 : C1, C1

9.EC.55

Borocookeite

Li1-1.5Al4-3.5[(OH,F)8|(B,Al)Si3O10]

monoklin : 2/m : C2/m

9.EC.55

'Chromian Clinochlore' (Var.v. Clinochlore)

Mg5(Al,Cr)2Si3O10(OH)8

9.EC.55

'Orthochamosite' (Pol.v. Chamosite)

(Fe2+,Mg,Fe3+)5Al(Si3Al)O10(OH,O)8

9.EC.55

Franklinfurnaceite

Ca2(Fe3+,Al)Mn3+Mn32+Zn2Si2O10(OH)8

monoklin : 2 : C2

9.EC.55

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

Donbassite

Al2.3[(OH)8|AlSi3O10]

monoklin : 2 : C2

VIII/H.23-005

Sudoite

Mg2Al3(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

VIII/H.23-010

Clinochlore

(Mg,Fe2+)5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

VIII/H.23-020

Chamosite

(Fe2+,Mg,Fe3+)5Al(Si3Al)O10(OH,O)8

monoklin : 2/m : C2/m

VIII/H.23-030

'Orthochamosite' (Pol.v. Chamosite)

(Fe2+,Mg,Fe3+)5Al(Si3Al)O10(OH,O)8

VIII/H.23-040

Baileychlore

(Zn,Fe2+,Al,Mg)6(Si,Al)4O10(OH)8

triklin : 1, 1 : C1, C1

VIII/H.23-050

Pennantite

Mn2+5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

VIII/H.23-060

Nimite

(Ni,Mg,Fe2+)5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

VIII/H.23-070

Gonyerite

Mn2+5Fe3+(Si3Fe3+O10)(OH)8

VIII/H.23-080

Cookeite

LiAl4(Si3Al)O10(OH)8

triklin : 1 : C1

VIII/H.23-090

Borocookeite

Li1-1.5Al4-3.5[(OH,F)8|(B,Al)Si3O10]

monoklin : 2/m : C2/m

VIII/H.23-095

Manandonite

Li2Al4[(Si2AlB)O10](OH)8

triklin : 1 : C1

VIII/H.23-100

Jadarite

LiNaB3SiO7(OH)

VIII/H.23-105

Franklinfurnaceite

Ca2(Fe3+,Al)Mn3+Mn32+Zn2Si2O10(OH)8

monoklin : 2 : C2

VIII/H.23-110

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

Pennantite

Mn2+5Al(Si3Al)O10(OH)8

monoklin : 2/m : C2/m

9.EJ.440

Gonyerite

Mn2+5Fe3+(Si3Fe3+O10)(OH)8

9.EJ.450

Other languages

German

Pennantit

Spanish

Pennantita

English

Pennantite

French

Pennantite

Russian

Пеннантит

Alternative Name

Grovesit

Spanish

Grovesita

English

Grovesite

French

Grovesite

Grovesite

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

German pages

DeWikiPedia - search for: Pennantit
Google-Bilder-Suche - search for: Pennantit
Mineralogisch-Petrographisches-Institut Hamburg - search for: Pennantit

English pages

Mindat - search for: Pennantite
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Handbook-of-Mineralogy - search for: Pennantite
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RRUFF - References and PDF downloads - search for: Pennantite
American-Mineralogist-Crystal-Structure-Database - search for: Pennantite
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Russian pages

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German pages

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