Mineralienatlas - Fossilienatlas
Sturmanite (Sturmanit) |
Pictures (48 Images total)
Views (File: ): 2858, Rating: 8.8
Sturmanit xx Bildbreite 4 cm; Fundort: N'Chwaning II Mine, Kalahari (Manganfelder), Südafrika Copyright: berthold; Contribution: Mineralienatlas Collection: berthold Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Kuruman/N'Chwaning Mines (NChwaning Mines)/N'Chwaning II Mine Mineral: Sturmanite Image: 1103050705 Rating: 8.8 (votes: 5) License: Usage for Mineralienatlas project only |
Sturmanit xx |
Bildbreite 4 cm; Fundort: N'Chwaning II Mine, Kalahari (Manganfelder), Südafrika |
Collection: | berthold |
Copyright: | berthold |
Contribution: Mineralienatlas 2004-12-14 |
Locality: N'Chwaning II Mine / N'Chwaning Mines (NChwaning Mines) / Kuruman / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika |
Views (File: ): 1212
Sturmanite Perfect quality, Sturmanite specimen, from N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape Province, South Africa; Size 60 х 29 х 23 mm Copyright: pegmatite; Contribution: pegmatite Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Kuruman/N'Chwaning Mines (NChwaning Mines) Mineral: Sturmanite Image: 1511758132 Rating: 9 (votes: 1) License: Usage for Mineralienatlas project only |
Sturmanite |
Perfect quality, Sturmanite specimen, from N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape Province, South Africa; Size 60 х 29 х 23 mm |
Copyright: | pegmatite |
Contribution: pegmatite 2017-11-27 |
Locality: N'Chwaning Mines (NChwaning Mines) / Kuruman / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika |
Views (File: ): 2866, Rating: 8.44
Sturmanit N'Chwaning II Mine, Kalahari Manganese Field, Südafrika, 32x26 mm Copyright: Embarak; Contribution: Embarak Collection: Embarak Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Kuruman/N'Chwaning Mines (NChwaning Mines)/N'Chwaning II Mine Mineral: Sturmanite Image: 1266740903 Rating: 8.44 (votes: 9) License: Usage for Mineralienatlas project only |
Sturmanit |
N'Chwaning II Mine, Kalahari Manganese Field, Südafrika, 32x26 mm |
Collection: | Embarak |
Copyright: | Embarak |
Contribution: Embarak 2010-02-21 |
Locality: N'Chwaning II Mine / N'Chwaning Mines (NChwaning Mines) / Kuruman / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika |
Views (File: ): 1877, Rating: 7.75
Sturmanit N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa. Stufenbreite 1,8 cm Copyright: skibbo; Contribution: skibbo Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Kuruman/N'Chwaning Mines (NChwaning Mines) Mineral: Sturmanite Image: 1361713623 Rating: 7.75 (votes: 8) License: Usage for Mineralienatlas project only |
Sturmanit |
N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa. Stufenbreite 1,8 cm |
Copyright: | skibbo |
Contribution: skibbo 2013-02-24 |
Locality: N'Chwaning Mines (NChwaning Mines) / Kuruman / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika |
Views (File: ): 2445, Rating: 7.5
Sturmanit Fundort: Kalahari Manganese Fields, Northern Cape Province, South Africa; Größe: 7.0 x 6.5 x 4.0 cm; Kristalle bis 1.2 cm Copyright: jayjay; Contribution: jayjay Collection: unbekannt Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field Mineral: Sturmanite Image: 1349721189 Rating: 7.5 (votes: 6) License: Usage for Mineralienatlas project only |
Sturmanit |
Fundort: Kalahari Manganese Fields, Northern Cape Province, South Africa; Größe: 7.0 x 6.5 x 4.0 cm; Kristalle bis 1.2 cm |
Collection: | unbekannt |
Copyright: | jayjay |
Contribution: jayjay 2012-10-08 |
Locality: Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika |
Views (File: ): 2857, Rating: 7.75
Sturmanit FO.: N´Chwaning Mine, bei Hotazell, wiederrum bei Kuruman, Provinz Northern Cape, Republik Südafrika / Stufengröße: 6 x 4,5 cm Copyright: Hrouda; Contribution: Hrouda Collection: Museum für Naturkunde Gera Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Kuruman/N'Chwaning Mines (NChwaning Mines) Mineral: Sturmanite Image: 1215552622 Rating: 7.75 (votes: 4) License: Usage for Mineralienatlas project only |
Sturmanit |
FO.: N´Chwaning Mine, bei Hotazell, wiederrum bei Kuruman, Provinz Northern Cape, Republik Südafrika / Stufengröße: 6 x 4,5 cm |
Collection: | Museum für Naturkunde Gera |
Copyright: | Hrouda |
Contribution: Hrouda 2008-07-08 |
Locality: N'Chwaning Mines (NChwaning Mines) / Kuruman / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika |
Collectors Summary
Color | grünlichgelb, gelb, gelbgrün, orange braun |
Streak color | gelb weiß |
Hardness (Mohs) | 2.5 |
Solubility | +++ HCl |
Crystal System | trigonal, P31c |
Chemism
Chemical formula |
Ca6(Fe3+,Al,Mn2+)2(SO4)2[B(OH)4](OH)12·25H2O |
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Chemical composition |
Aluminium, Calcium, Eisen, Mangan, Bor, Sauerstoff, Schwefel, Wasserstoff |
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Analysis wt% |
CaO : 25.60, Fe2O3 : 8.84, Al2O3 : 1.13, MnO : 1.30, B2O3 : 3.20, SO3 : 14.20, H2O : 46.70 (Ref: Canadian Mineralogist 83) |
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Strunz 9th edition incl. updates |
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7: Sulfate (Selenate, Tellurate, Chromate, Molybdate, Wolframate) |
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Lapis Classification |
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VI: SULFATE, CHROMATE, MOLYBDATE UND WOLFRAMATE |
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Classification by Hölzel |
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7: SULFATES CHROMATES MOLYBDATES WOLFRAMATES |
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Dana 8th edition |
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32: Compound Sulfates |
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IMA status |
Anerkannt von der CNMNC |
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Mineral status |
anerkanntes Mineral |
IMA Classification
IMA Classification |
Ettringite group |
Optical Properties
Optical Data Luminescence
keine Fluoreszenz bekannt |
Crystallography
Crystals 3D
Open larger view |
Crystal Structure 3D
Open larger view |
Physical Properties
2.5 |
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53 (ungefähre Angabe abgeleitet aus der Mohshärte) |
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1.847 |
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1.781 ( ρ calc. Mineralienatlas ) |
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Instability |
+++ HCl |
(Co-)Type locality
(Co-)Type locality |
Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Black Rock Mine |
Preface
Author (Name, Year) |
Peacor & Dunn & Duggan, 1983 |
IMA group assignments
Refresh list | Actuality: 23. Mar 2023 - 16:32:35 |
Other languages
German |
Sturmanit |
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Spanish |
Sturmanita |
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English |
Sturmanite |
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French |
Sturmanite |
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Russian |
Стурманит |
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Japanese |
スタルマナイト |
CNMNC (IMA)-Number
IMA 1981-011 |
CNMNC symbol
Symbol |
Strm |
Automatic Links to external internet sources (Responsibility is with the operator)
Mineral Dealer
Locations with GPS information