| Locality type: | Tunnel |
| Classification |
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| Species: | Prehnite |
| Formula: | Ca2Al2Si3O10(OH)2 |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Prehnite data |
| Locality Data: | Click here to view Martigny road tunnel, Mont Chemin mining district, Martigny, Valais, Switzerland |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 298754 |
| Long-form Identifier: | 1:3:298754:5 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Prehnite |
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| 37.4km (23.2 miles) | ⓘMiage Glacier, Courmayeur, Aosta Valley, Italy |
| 46.5km (28.9 miles) | ⓘLes Perrères Dam, Valtournenche, Aosta Valley, Italy |
| 46.9km (29.1 miles) | ⓘGouffre des Busserailles, Valtournenche, Aosta Valley, Italy |
| 49.8km (30.9 miles) | ⓘSchwarzsee lake, Zmuttbach Valley, Zermatt, Visp, Valais, Switzerland |
| 57.6km (35.8 miles) | ⓘPollux, Gorner glacier area, Zermatt, Visp, Valais, Switzerland |
| 57.6km (35.8 miles) | ⓘMittal-Hohtenn road tunnel, Mittal, Steg-Hohtenn, Westlich Raron, Valais, Switzerland |
| 57.6km (35.8 miles) | ⓘPolluce (Pollux), Champoluc, Ayas, Aosta Valley, Italy |
| 57.7km (35.8 miles) | ⓘMonte Rosso di Verra, Champoluc, Ayas, Aosta Valley, Italy |
| 58.0km (36.0 miles) | ⓘPasso di Verra area (Zwillingsjoch area), Champoluc, Ayas, Aosta Valley, Italy |
| 59.0km (36.7 miles) | ⓘStockchnubel, Stockhorn, Gorner glacier area, Zermatt, Visp, Valais, Switzerland |
| References |
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