Gahnite is named for J. G. Gahn, the Swedish chemist who discovered the element manganese. It is a rare mineral that is found in zones enriched in zinc and forms in granitic pegmatites and metamorphic areas.
| ZnAl2O4 |
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| Oxide |
|
| Isometric |
|
| 4/m -3 2/m |
|
| 7.5-8 |
|
| 4.55 |
|
| {111} indistinct |
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| Uneven |
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| Dark green |
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| Gray |
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| Vitreous |
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| Translucent |
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| Granular, euhedral |
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| Notable Localities: |
Bavaria, Germany; Falun, Sweden; Franklin, New Jersey |
| Uses: |
Mineral specimen |
| Other zinc minerals |
Specimens:
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