| Locality type: | Quarry |
| Classification |
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| Species: | Magnesite |
| Formula: | MgCO3 |
| Habit: | transparent, modified rhombohedra |
| Colour: | light greyish green |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Anatase | 2 |
| Data |
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| Mineral Data: | Click here to view Magnesite 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 (5 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 7174 |
| Long-form Identifier: | 1:3:7174:1 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Magnesite |
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| 38.6km (24.0 miles) | ⓘCanadian National Railway tunnel, Mont Royal, Montréal, Québec, Canada |
| 73.9km (45.9 miles) | ⓘBaker Talc mine (Van Reet mine), Bolton-Est, Memphrémagog RCM, Estrie, Québec, Canada |
| 86.7km (53.8 miles) | ⓘSterrett mine, Saint-Cyr, Canton de Cleveland, Le Val-Saint-François RCM, Estrie, Québec, Canada |
| 95.4km (59.3 miles) | ⓘJeffrey Mine, Val-des-Sources, Les Sources RCM, Estrie, Québec, Canada |
| References |
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Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada