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Gahnit (Moll, 1807), chemický vzorec ZnAl2O4, je kubický minerál ze skupiny spinelidů. Pojmenován podle svého objevitele: Johan Gottlieb Gahn (1745-1818), švédský chemik a mineralog
Parageneze, Naleziště & Původ
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minerál vlastnosti chemický vzorec znal2o4 h2so4 oktaedry dodekaedry minerály zn barva zelená tvrdost lesk skelný štěpnost nedokonalá vryp šedý hustota
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Gahnit | Barva | zelená | 1.00 | infobox |
| Gahnit | Chemický vzorec | ZnAl2O4 | 1.00 | infobox |
| Gahnit | Hustota | 4,3 g ⋅ cm−3 | 1.00 | infobox |
| Gahnit | Index lomu | n=1,790–1,800 | 1.00 | infobox |
| Gahnit | Kategorie | Minerál | 1.00 | infobox |
| Gahnit | Lesk | skelný | 1.00 | infobox |
| Gahnit | Rozpustnost | těžce v H2SO4 | 1.00 | infobox |
| Gahnit | Soustava | krychlová | 1.00 | infobox |
| Gahnit | Tvrdost | 7,5–8 | 1.00 | infobox |
| Gahnit | Vryp | šedý | 1.00 | infobox |
| Gahnit | Vzhled krystalu | oktaedry, dodekaedry | 1.00 | infobox |
| Gahnit | Štěpnost | nedokonalá | 1.00 | infobox |
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