| Locality type: | Quarry |
| Classification |
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| Species: | Thaumasite |
| Formula: | Ca3(SO4)[Si(OH)6](CO3) · 12H2O |
| Habit: | acicular, radiating |
| Colour: | colourless, white |
| Confirmation |
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| Validity: | Believed Valid |
| Data |
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| Mineral Data: | Click here to view Thaumasite 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 |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 37563 |
| Long-form Identifier: | 1:3:37563:0 |
| GUID (UUID V4): | c4610ee4-5bfd-4825-b234-1650f8db384f |
| Nearest other occurrences of Thaumasite |
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| 36.2km (22.5 miles) | ⓘFrancon quarry, Montréal, Québec, Canada |
| 37.1km (23.0 miles) | ⓘCorporation (Forsyth's) quarry, Mont Royal, Montréal, Québec, Canada |
| References |
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Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada