Mineralienatlas - Fossilienatlas
Jacobsite |
Pictures (14 Images total)
Views (File: ): 2528
Jakobsit, N'Chwaning II, Südafrika, Tucson 2014 Jakobsit, 3 cm, aus N'Chwaning II Mine, Kalahari, Südafrika, im Angebot im InnSuites Hotel, Tucson 2014 Copyright: Manganit; Contribution: Manganit Collection: Southern African Minerals Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Kuruman/N'Chwaning Mines (NChwaning Mines) Mineral: Jacobsite Image: 1394430550 Rating: 10 (votes: 1) License: Usage for Mineralienatlas project only |
Jakobsit, N'Chwaning II, Südafrika, Tucson 2014 |
Jakobsit, 3 cm, aus N'Chwaning II Mine, Kalahari, Südafrika, im Angebot im InnSuites Hotel, Tucson 2014 |
Collection: | Southern African Minerals |
Copyright: | Manganit |
Contribution: Manganit 2014-03-10 |
Locality: N'Chwaning Mines (NChwaning Mines) / Kuruman / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika |
Views (File: ): 3382, Rating: 5.75
Jakobsit FO: Schweden/Värmland/Filipstad/Nordmark/Jakobsberg; Bildausschnitt 10 x 7 mm Copyright: rtbstone; Contribution: rtbstone Collection: rtbstone Location: Schweden/Värmland, Provinz/Filipstad, Gemeinde/Nordmark (Nordmarksberg)/Jakobsberg Mineral: Jacobsite Image: 1180282827 Rating: 5.75 (votes: 4) License: Usage for Mineralienatlas project only |
Jakobsit |
FO: Schweden/Värmland/Filipstad/Nordmark/Jakobsberg; Bildausschnitt 10 x 7 mm |
Collection: | rtbstone |
Copyright: | rtbstone |
Contribution: rtbstone 2007-05-27 |
Locality: Jakobsberg / Nordmark (Nordmarksberg) / Filipstad, Gemeinde / Värmland, Provinz / Schweden |
Views (File: ): 2681
Jakobsit Bildbreite: 5 mm; Fundort: Iron Monarch Opencut, Halbinsel Eyre, Süd-Australien Copyright: Alan Goldstein; Contribution: Philip Blümner Location: Australien/South Australia/Eyre Peninsula/Middleback Range/Iron Knob/Iron Monarch Opencut Mineral: Jacobsite Image: 1257637069 Rating: 5 (votes: 1) License: Usage for Mineralienatlas project only |
Jakobsit |
Bildbreite: 5 mm; Fundort: Iron Monarch Opencut, Halbinsel Eyre, Süd-Australien |
Copyright: | Alan Goldstein |
Contribution: Philip Blümner 2009-11-07 |
Locality: Iron Monarch Opencut / Iron Knob / Middleback Range / Eyre Peninsula / South Australia / Australien |
Views (File: ): 2675
Jakobsit In Matrix. Jakobsberg, Nordmark, Filistad, Värmland, Schweden. 5x6cm. Copyright: Doc Diether; Contribution: Doc Diether Collection: Doc Diether Location: Schweden/Värmland, Provinz/Filipstad, Gemeinde/Nordmark (Nordmarksberg)/Jakobsberg Mineral: Jacobsite Image: 1217077455 Rating: 3.5 (votes: 2) License: Usage for Mineralienatlas project only |
Jakobsit |
In Matrix. Jakobsberg, Nordmark, Filistad, Värmland, Schweden. 5x6cm. |
Collection: | Doc Diether |
Copyright: | Doc Diether |
Contribution: Doc Diether 2008-07-26 |
Locality: Jakobsberg / Nordmark (Nordmarksberg) / Filipstad, Gemeinde / Värmland, Provinz / Schweden |
Views (File: ): 2744
Jakobsit Größe: 3,8 x 3,5 x 3,2 cm; Fundort: N'Chwaning Mine - Kalahari Cape Provinz - Südafrika Copyright: Rob Lavinsky; Contribution: Hg Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Kuruman/N'Chwaning Mines (NChwaning Mines) Mineral: Jacobsite Image: 1180283655 License: Usage for Mineralienatlas project only |
Jakobsit |
Größe: 3,8 x 3,5 x 3,2 cm; Fundort: N'Chwaning Mine - Kalahari Cape Provinz - Südafrika |
Copyright: | Rob Lavinsky |
Contribution: Hg 2007-05-27 |
Locality: N'Chwaning Mines (NChwaning Mines) / Kuruman / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika |
Collectors Summary
Color | graulich mit mit oliven Farbton und braun internen Reflektionen |
Streak color | rötlich schwarz |
Hardness (Mohs) | 6 |
Solubility | ++ HCl |
Crystal System | kubisch, Fd3m |
Chemism
Chemical formula |
(Mn2+,Fe2+,Mg)(Fe3+,Mn3+)2O4 |
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Chemical composition |
Eisen, Magnesium, Mangan, Sauerstoff |
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Analysis wt% |
MgO : 9.26, FeO : 2.57, MnO : 13.94, Fe2O3 : 73.96 (Ref: Dana, 7th ed. 1) |
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Strunz 9th edition incl. updates |
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4: Oxide, Hydroxide (Oxide, Hydroxide, V[5,6]-Vanadate, Arsenite, Antimonite, Bismutite, Sulfite, Selenite, Tellurite, Iodate) |
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Lapis Classification |
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IV: OXIDE |
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Classification by Hölzel |
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4: OXIDES |
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Dana 8th edition |
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07: Multiple Oxides |
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IMA status |
Anerkannt von der CNMNC |
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Mineral status |
anerkanntes Mineral |
IMA Classification
IMA Classification |
Spinel supergroup ⇒ Oxyspinel group ⇒ Spinel subgroup |
Optical Properties
graulich mit mit oliven Farbton und braun internen Reflektionen |
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rötlich schwarz |
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opak |
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RI value α / ω / n |
2.3 |
Ri mean |
2.3 |
2V angle |
Isotropisch |
Crystallography
Crystals 3D
Open larger view |
Crystal Structure 3D
Open larger view |
Physical Properties
6 |
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746 (100g) |
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4.75 |
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4.971 ( ρ calc. Mineralienatlas ) |
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Instability |
++ HCl |
(Co-)Type locality
(Co-)Type locality |
Schweden/Värmland, Provinz/Filipstad, Gemeinde/Nordmark (Nordmarksberg)/Jakobsberg |
Preface
References
Handbook of Mineralogy (Anthony et al.), 3 (1997), 274 Rösler, H.J. (1988), Lehrbuch der Mineralogie, Deutscher Verlag für Grundstoffindustrie; 4. Aufl. Edition, 844 Seiten, S. 409, ISBN: 978-3-34200-288-8. |
IMA group assignments
Refresh list | Actuality: 05. Nov 2024 - 18:28:59 |
Other languages
Spanish |
Jacobsita |
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French |
Jacobsite |
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English |
Jacobsite |
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German |
Jakobsit |
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Russian |
Якобсит |
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Simplified Chinese |
黑镁铁锰矿 |
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Japanese |
ヤコブス鉱 |
Alternative Name
German |
Jacobsit |
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English |
Magnetostibian |
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English |
Manganoferrite |
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English |
Manganspinel |
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Simplified Chinese |
锰铁矿 |
CNMNC symbol
Symbol |
Jcb |
Automatic Links to external internet sources (Responsibility is with the operator)
Mineral Dealer
Locations with GPS information
IDs
GUSID (Global unique identifier short form) | y_gRfzE_Ck292YABFK2qnQ |
GUID (Global unique identifier) | 7F11F8CB-3F31-4D0A-BDD9-800114ADAA9D |
Database ID | 1767 |