Mineralienatlas - Fossilienatlas
Tweddillite |
Pictures (2 Images total)
Views (File: ): 106
Tweddillit von Barranco Hondo, Teneriffa Tafelig gestreckte Kristalle in Kalsilit-Olivin-Leucit-Melilithit. Bildbreite 1,5 mm Copyright: Kurt Rüsenberg; Contribution: humboldt Collection: humboldt Location: Spanien/Kanarische Inseln/Teneriffa/El Rosario, Municiopio/Barranco Hondo Mineral: Tweddillite Rock: kalsilite-leucite-olivine melilitite Image: 1681404380 License: Usage for Mineralienatlas project only |
Tweddillit von Barranco Hondo, Teneriffa |
Tafelig gestreckte Kristalle in Kalsilit-Olivin-Leucit-Melilithit. Bildbreite 1,5 mm |
Collection: | humboldt |
Copyright: | Kurt Rüsenberg |
Contribution: humboldt 2023-04-13 |
Locality: Barranco Hondo / El Rosario, Municiopio / Teneriffa / Kanarische Inseln / Spanien |
Views (File: ): 58
Tweddillit Sehr Kleiner Tweddillit-X (ohne Maßstab) von der Typlokalität Wessels Mine (North Cape Provinz, Süd Afrika). Copyright: Wikipedia-user: David Hospital; Contribution: oliverOliver Location: Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Hotazel/Wessel's Mine (Wessels Mine) Mineral: Tweddillite Image: 1701555108 Rating: 1 (votes: 1) License: Creative Commons - Attribution-ShareAlike 4.0 International (CC BY-SA) V.4.0 |
Tweddillit |
Sehr Kleiner Tweddillit-X (ohne Maßstab) von der Typlokalität Wessels Mine (North Cape Provinz, Süd Afrika). |
Copyright: | Wikipedia-user: David Hospital |
Contribution: oliverOliver 2023-12-02 |
Locality: Wessel's Mine (Wessels Mine) / Hotazel / Kalahari Manganese Field / Nordkap (Northern Cape), Provinz / Südafrika |
Collectors Summary
Color | tief rot |
Streak color | braunrot |
Lustre | Glasglanz |
Hardness (Mohs) | 6.5 |
Cleavages | vollkommen {001} |
Fracture | halbmuschelig |
Chemism
Chemical formula |
CaSr(Mn3+,Fe3+)2Al[O|OH|SiO4|Si2O7] |
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Chemical composition |
Aluminium, Calcium, Eisen, Mangan, Silicium, Strontium, Sauerstoff, Wasserstoff |
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Strunz 9th edition incl. updates |
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9: Silikate (Germanate) |
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Lapis Classification |
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VIII: SILIKATE |
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Classification by Hölzel |
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9: SILICATES |
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Mineral status |
anerkanntes Mineral |
IMA Classification
IMA Classification |
Epidote supergroup ⇒ Epidote group |
Optical Properties
tief rot |
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braunrot |
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Glasglanz |
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RI value α / ω / n |
1.825 |
RI value β |
av. |
Ri mean |
1.825 |
2V angle |
Biaxial |
Crystallography
Crystals 3D
Open larger view |
Crystal Structure 3D
Open larger view |
Physical Properties
6.5 |
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960 (ungefähre Angabe abgeleitet aus der Mohshärte) |
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3.84 (berechnet) |
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3.885 ( ρ calc. Mineralienatlas ) |
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vollkommen {001} |
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halbmuschelig |
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spröde |
(Co-)Type locality
(Co-)Type locality |
Südafrika/Nordkap (Northern Cape), Provinz/Kalahari Manganese Field/Hotazel/Wessel's Mine (Wessels Mine) |
Preface
References
IMA group assignments
Other languages
German |
Tweddillit |
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Spanish |
Tweddillita |
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French |
Tweddillite |
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English |
Tweddillite |
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Twedillit |
old name
German |
Manganipiemontit-(Sr) |
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English |
Manganipiemontite-(Sr) |
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Russian |
Манганипьемонтит-(Sr) |
Alternative Name
Tweddillita |
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Tweddillite |
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Twedillita |
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Twedillite |
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Russian |
Тведдилит |
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Simplified Chinese |
特威迪尔石 |
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Traditional Chinese |
特威迪爾石 |
CNMNC (IMA)-Number
IMA 2001-014 |
CNMNC symbol
Symbol |
Twe |
Automatic Links to external internet sources (Responsibility is with the operator)
Mineral Dealer
Locations with GPS information
IDs
GUSID (Global unique identifier short form) | 8GwZLhTS_k-tL_DWp3Ti9g |
GUID (Global unique identifier) | 2E196CF0-D214-4FFE-AD2F-F0D6A774E2F6 |
Database ID | 3959 |