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Hennomartinite (Hennomartinit)

Pictures (3 Images total)

Hennomartinite, Sugilite
Views (File:
1513523133
): 620
Hennomartinite, Sugilite
Sony Alpha 7R ii, bellows, Mitutoyo M Plan 20x, aperture, Raynox DCR-250 retro, Stack-Master linear actor, stack shot control. Brown Hennomartinite sprays among violet Sugilite crystals. Collection and photo Stephan Wolfsried 5/2016; Locality: Wessels Mine, Hotazel, Kalahari manganese field, Northern Cape Province, South Africa; Fov: 2 mm;
Copyright: Stephan Wolfsried; Contribution: Stefan
Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Hotazel/Wessel's Mine (Wessels Mine)
Mineral: Hennomartinite
Image: 1513523133
License: Usage for Mineralienatlas project only
Hennomartinite, Sugilite

Sony Alpha 7R ii, bellows, Mitutoyo M Plan 20x, aperture, Raynox DCR-250 retro, Stack-Master linear actor, stack shot control. Brown Hennomartinite sprays among violet Sugilite crystals. Collection...
Copyright: Stephan Wolfsried
Contribution: Stefan 2017-12-17
Locality: Wessel's Mine (Wessels Mine) / Hotazel / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika
Hennomartinite, Sugilite
Views (File:
1513523188
): 612
Hennomartinite, Sugilite
brown crystals of hennomartinite with lilac sugilite; photo and collection Joachim Esche 2016; modified Wild M420 photomacroscope with apozoom and Canon EOS 550D; Locality: Wessels Mine, Hotazel, Kalahari manganese field, Northern Cape Province, South Africa; Fov: 1.8 mm;
Copyright: Joachim Esche; Contribution: Stefan
Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Hotazel/Wessel's Mine (Wessels Mine)
Mineral: Hennomartinite
Image: 1513523188
License: Usage for Mineralienatlas project only
Hennomartinite, Sugilite

brown crystals of hennomartinite with lilac sugilite; photo and collection Joachim Esche 2016; modified Wild M420 photomacroscope with apozoom and Canon EOS 550D; Locality: Wessels Mine, Hotazel, K...
Copyright: Joachim Esche
Contribution: Stefan 2017-12-17
Locality: Wessel's Mine (Wessels Mine) / Hotazel / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika
Hennomartinit xx
Views (File:
1605546691
): 449
Hennomartinit xx
rotbraune Garben prismatischer Hennomartinite mit violetten Sugilithkristallen von der Wessels Mine,Kalahari Manganerzfeld,Kuruman/Südafrika; Bildbreite 2,05 mm
Copyright: Haubi; Contribution: Haubi
Collection: Haubi
Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Hotazel/Wessel's Mine (Wessels Mine)
Mineral: Hennomartinite, Sugilite
Image: 1605546691
License: Usage for Mineralienatlas project only
Hennomartinit xx

rotbraune Garben prismatischer Hennomartinite mit violetten Sugilithkristallen von der Wessels Mine,Kalahari Manganerzfeld,Kuruman/Südafrika; Bildbreite 2,05 mm
Collection: Haubi
Copyright: Haubi
Contribution: Haubi 2020-11-16
Locality: Wessel's Mine (Wessels Mine) / Hotazel / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika

Collectors Summary

Color braun, gelbbraun
Streak color gelblich braun
Hardness (Mohs) 4
Cleavages keine
Fracture unregelmäßig
Crystal System orthorhombisch, P21cn

Chemism

Chemical formula

SrMn23+[(OH)2|Si2O7]·H20

Chemical composition

Mangan, Silicium, Strontium, Sauerstoff, Wasserstoff

Unit weight: 401.6948178 u; Number of atoms in the formula: 18

Info

Empirical formula:

SrMn2[(OH)2Si2O7]·H20

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

1.00

4

22.22

1.0079470

4.0317880
Oxygen

O

35.85

9

50.00

15.9994300

143.9948700
Silicon

Si

13.98

2

11.11

28.0855300

56.1710600
Manganese

Mn

27.35

2

11.11

54.9380499

109.8760998
Strontium

Sr

21.81

1

5.56

87.6210000

87.6210000

Analysis wt%

SiO2 : 28.22, Mn2O3 : 37.82, Fe2O3 : 0.53, SrO : 24.32, BaO : 0.46, H2O : 8.63 (Ref: European Journal of Mineralogy 92)

Strunz 9th edition incl. updates

9.BE.05

9: Silikate (Germanate)
B: Gruppensilikate (Sorosilikate)
E: Si2O7 Gruppen mit zusätzlichen Anionen; Kationen in oktahedraler [6] und größerer Koordination
05:Lawsonit-Gruppe

Lapis Classification

VIII/C.10-015

VIII: SILIKATE
C: Gruppensilikate
10: Gruppensilikate [Si2O7] 6-, mit tetraederfremden Anionen (O,OH,F)

Classification by Hölzel

9.BE.330

9: SILICATES
B: Sorosilicates
E: Cuspidine-Tilleyite-Group

Dana 8th edition

56.02.03.02

56: Sorosilicates Sorosilicate Si2O7 Groups and O, OH, F. and H2O
02: Sorosilicates Sorosilicate Si2O7 Groups and O, OH, F. and H2O with cations in [4] and/or >[4] coordination
03: Lawsonite - Ilvaite group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

Optical Properties

Color

braun, gelbbraun

Streak color

gelblich braun

Diaphaneity (Transparency)

durchscheinend

RI value α / ω / n

1.82>

Ri mean

1.82>

2V angle

b nd 63°

Crystallography

Crystal System

orthorhombisch

Class (H-M)

mm2

Space Group number

33

Space Group

P21cn

Cell parameters a (Å)

6.245

Cell parameters b (Å)

9.031

Cell parameters c (Å)

13.404

Cell parameters a/b or c/a

0.692

Cell parameters c/b

1.484

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

755.967

X-Ray Powder Diffraction

4.804(90),
4.287(60),
3.373(70),
2.833(100),
2.807(80),
2.715(60),
2.695(100),
2.401(70)
XRD chart Hennomartinite

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)

4

VHN (Hardness Vickers)

300 (100g)

Density (g/cm³)

3.68 (berechnet)

3.529 ( ρ calc. Mineralienatlas )

Cleavages

keine

Fracture

unregelmäßig

Tenacity

spröde

(Co-)Type locality

(Co-)Type locality

Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Hotazel/Wessel's Mine (Wessels Mine)

Preface

Author (Name, Year)

Armbruster & Oberhänsli & Bermanec & Dixon, 1993

References

Armbruster T, Oberhänsli R, Bermanec V, Dixon R - Hennomartinite and kornite, two new Mn3+ rich silicates from the Wessels mine, Kalahari, South Africa, Schweizerische Mineralogische und Petrographische Mitteilungen 73 (1993), 349-355

Other languages

German

Hennomartinit

Spanish

Hennomartinita

French

Hennomartinite

English

Hennomartinite

Russian

Хенномартинит

CNMNC (IMA)-Number

IMA 1992-033

CNMNC symbol

Symbol

Hma

Locations with GPS information

IDs

GUSID (Global unique identifier short form) DQWr9fLFwkWy80U5Kol-KQ
GUID (Global unique identifier) F5AB050D-C5F2-45C2-B2F3-45392A897E29
Database ID 1567