| Locality type: | Open-Cast Mine |
| Classification |
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| Species: | Prehnite |
| Formula: | Ca2Al2Si3O10(OH)2 |
| Habit: | steep pyramidal, blocky, curved aggregates |
| Colour: | colourless, white, pale yellow, green, purple |
| Quality for species: | Excellent - world class for species or very significant. (!!) |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Grossular | 63 |
| - var Chrome-bearing Grossular | 9 |
| - var Hessonite | 8 |
| Diopside | 37 |
| Pectolite | 10 |
| Heazlewoodite | 4 |
| Goethite | 3 |
| Vesuvianite | 3 |
| Aegirine | 2 |
| Okenite | 1 |
| Data |
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| Mineral Data: | Click here to view Prehnite data |
| Locality Data: | Click here to view Jeffrey Mine, Val-des-Sources, Les Sources RCM, Estrie, Québec, Canada |
| Photo Gallery | View Gallery (139 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 22016 |
| Long-form Identifier: | 1:3:22016:3 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Prehnite |
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| 12.1km (7.5 miles) | ⓘSterrett mine, Saint-Cyr, Canton de Cleveland, Le Val-Saint-François RCM, Estrie, Québec, Canada |
| 41.5km (25.8 miles) | ⓘOrford Nickel mine, St-Denis-de-Brompton, Le Val-Saint-François RCM, Estrie, Québec, Canada |
| 49.5km (30.8 miles) | ⓘContinental mine (Megantic mine; Lambly mine; Paré mine), Saint-Joseph-de-Coleraine, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada |
| 54.0km (33.6 miles) | ⓘMine Lac d'Amiante (Lake Asbestos Mine; "LAB Mine"; "Black Lake Mine"), Saint-Joseph-de-Coleraine, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada |
| 55.6km (34.5 miles) | ⓘBritish Canadian mine (B.C. 1 mine; B.C. 2 mine; Martin mine; Black Lake mine; American mine; Dauville mine), Black Lake, Thetford Mines, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada |
| 60.0km (37.3 miles) | ⓘKing Beaver mine (Jacob mine; Beaver-1 mine; Beaver-2 mine), Thetford Mines, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada |
| 60.8km (37.8 miles) | ⓘBell mine, Thetford Mines, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada |
| 60.9km (37.8 miles) | ⓘJohnson mine, Thetford Mines, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada |
| 61.3km (38.1 miles) | ⓘKing mine, Thetford Mines, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada |
| 65.9km (41.0 miles) | ⓘFlintkote mine, Pontbriand, Thetford Mines, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada |
| References |
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Jeffrey Mine, Val-des-Sources, Les Sources RCM, Estrie, Québec, Canada