Mineralienatlas - Fossilienatlas
Sturmanite (Sturmanit) |
Pictures (50 Images total)
Views (File: ): 99
Brucit und Sturmanit farbloser Brucit als kugeliges Aggregat mit gelben Sturmanitkristallen. N'Chwaning Mines, Kalahari, Südafrika. BB: 6,5mm Copyright: Mabu; Contribution: Mabu Collection: Mabu Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Kuruman/N'Chwaning Mines (NChwaning Mines) Mineral: Brucite, Sturmanite Image: 1730154781 Rating: 9.5 (votes: 2) License: Usage for Mineralienatlas project only |
Brucit und Sturmanit |
farbloser Brucit als kugeliges Aggregat mit gelben Sturmanitkristallen. N'Chwaning Mines, Kalahari, Südafrika. BB: 6,5mm |
Collection: | Mabu |
Copyright: | Mabu |
Contribution: Mabu 2024-10-28 |
Locality: N'Chwaning Mines (NChwaning Mines) / Kuruman / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika |
Views (File: ): 2912, 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: ): 1332
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: ): 2918, 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: ): 1924, 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 |
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
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
IDs
GUSID (Global unique identifier short form) | M7yfGOqZNU2U3gebs3Hd5Q |
GUID (Global unique identifier) | 189FBC33-99EA-4D35-94DE-079BB371DDE5 |
Database ID | 3682 |