| Locality type: | Quarry |
| Classification |
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| Species: | Quartz |
| Formula: | SiO2 |
| Habit: | prismatic |
| Colour: | colourless, grey, brown, black |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Siderite | 30 |
| Calcite | 21 |
| Albite | 21 |
| Monteregianite-(Y) | 13 |
| Fluorite | 13 |
| Gaidonnayite | 12 |
| Lorenzenite | 9 |
| Pyrite | 9 |
| Microcline | 7 |
| Carletonite | 7 |
| Chalcopyrite | 6 |
| Sphalerite | 6 |
| Natrolite | 5 |
| Narsarsukite | 5 |
| Adamsite-(Y) | 5 |
| Elpidite | 4 |
| Gmelinite-Na | 4 |
| Zircon | 4 |
| Shomiokite-(Y) | 3 |
| Epididymite | 3 |
| Strontianite | 3 |
| Analcime | 3 |
| Dolomite | 3 |
| Serandite | 2 |
| Polylithionite | 2 |
| Quartz | 2 |
| - var Smoky Quartz | 2 |
| Amphibole Supergroup | 2 |
| Aegirine | 2 |
| Willemite | 1 |
| Yofortierite | 1 |
| Rutile | 1 |
| Anatase | 1 |
| Charmarite | 1 |
| Pectolite | 1 |
| Astrophyllite | 1 |
| Franconite | 1 |
| Lalondeite | 1 |
| Phillipsite-Na | 1 |
| Neighborite | 1 |
| Melansonite | 1 |
| Rhodochrosite | 1 |
| Mckelveyite Group | 1 |
| Molybdenite | 1 |
| Hilairite | 1 |
| Brookite | 1 |
| Aenigmatite | 1 |
| Fluorapatite | 1 |
| Data |
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| Mineral Data: | Click here to view Quartz 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 (28 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 37531 |
| Long-form Identifier: | 1:3:37531:1 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Quartz |
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| 1.3km (0.8 miles) | ⓘMont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada |
| 11.4km (7.1 miles) | ⓘMont Rougemont, Rouville RCM, Montérégie, Québec, Canada |
| 14.7km (9.1 miles) | ⓘDulude Quarry (DJL - Carrière Mont-Bruno), Mont Saint Bruno, Saint-Bruno-de-Montarville, Longueuil TE, Montérégie, Québec, Canada |
| 15.8km (9.8 miles) | ⓘGoyer quarry, Mont Saint Bruno, Saint-Bruno-de-Montarville, Longueuil TE, Montérégie, Québec, Canada |
| 19.5km (12.1 miles) | ⓘDemix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Canada |
| 20.4km (12.7 miles) | ⓘRoute 235 roadcuts, Saint-Pie, Les Maskoutains RCM, Montérégie, Québec, Canada |
| 21.6km (13.4 miles) | ⓘBoucherville, Lajemmerais RCM, Montérégie, Québec, Canada |
| 24.8km (15.4 miles) | ⓘMont Yamaska, Rouville RCM, Montérégie, Québec, Canada |
| 29.7km (18.4 miles) | ⓘAnge Gardien Quarry, Ange Gardien, Rouville RCM, Montérégie, Québec, Canada |
| 31.3km (19.4 miles) | ⓘLafarge Montreal East quarry (Carrière Lafarge Montréal-Est; Francon Montréal-Est quarry; Canada Cement quarry), Montréal-Est, Montréal, Québec, Canada |
| References |
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Lykova, Inna; Rowe, Ralph; Teat, Simon J.; Poirier, Glenn; Barnes, Stephanie (2026) Piilonenite-(Nd), NaNd(CO3)2·3H2O, a new neodymium-dominant carbonate mineral from Mont Saint-Hilaire, Quebec, Canada. European Journal of Mineralogy, 38 (3). p.337-345. doi:10.5194/ejm-38-337-2026 |
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Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada