| Locality type: | Quarry |
| Classification |
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| Species: | Nepheline |
| Formula: | Na3K(Al4Si4O16) |
| Habit: | hexagonal prisms, massive |
| Colour: | grey |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Kentbrooksite | 9 |
| Eudialyte Group | 8 |
| Pectolite | 5 |
| Aegirine | 4 |
| Niobokupletskite | 3 |
| Eudialyte | 3 |
| Serandite | 3 |
| Charmarite | 2 |
| Villiaumite | 2 |
| Synchysite-(Ce) | 2 |
| Manganoeudialyte | 2 |
| Cappelenite-(Y) | 1 |
| Microcline | 1 |
| Fluorite | 1 |
| Data |
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| Mineral Data: | Click here to view Nepheline data |
| Locality Data: | Click here to view Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH), Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada |
| Photo Gallery | View Gallery (9 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 8058 |
| Long-form Identifier: | 1:3:8058:3 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Nepheline |
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| 19.5km (12.1 miles) | ⓘDemix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Canada |
| 22.7km (14.1 miles) | ⓘMont Saint-Gregoire (Mont Johnson; Monoir), Le Haut-Richelieu RCM, Montérégie, Québec, Canada |
| 24.8km (15.4 miles) | ⓘMont Yamaska, Rouville RCM, Montérégie, Québec, Canada |
| 33.5km (20.8 miles) | ⓘRosemont quarry, Montréal, Québec, Canada |
| 37.1km (23.0 miles) | ⓘCorporation (Forsyth's) quarry, Mont Royal, Montréal, Québec, Canada |
| 38.6km (24.0 miles) | ⓘCanadian National Railway tunnel, Mont Royal, Montréal, Québec, Canada |
| 46.4km (28.8 miles) | ⓘMont Shefford, Shefford, La Haute-Yamaska RCM, Estrie, Québec, Canada |
| 50.6km (31.4 miles) | ⓘMont Brome, Bromont, Estrie, Québec, Canada |
| 72.2km (44.9 miles) | ⓘHusereau Hill, Oka, Deux-Montagnes RCM, Laurentides, Québec, Canada |
| 89.7km (55.8 miles) | ⓘTroy, Orleans County, Vermont, USA |
| References |
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Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada