| Locality type: | Quarry |
| Classification |
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| Species: | Franconite |
| Formula: | Na(Nb2O5)(OH) · 3H2O |
| Habit: | fibrous radiating aggregates |
| Colour: | white, silky |
| Quality for species: | Good crystals or rich for species - important (!) |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Aegirine | ⓘ33 photos of Franconite associated with Aegirine at this locality. |
| Albite | ⓘ32 photos of Franconite associated with Albite at this locality. |
| Thomasclarkite-(Y) | ⓘ25 photos of Franconite associated with Thomasclarkite-(Y) at this locality. |
| Microcline | ⓘ25 photos of Franconite associated with Microcline at this locality. |
| Adamsite-(Y) | ⓘ21 photos of Franconite associated with Adamsite-(Y) at this locality. |
| Niobokupletskite | ⓘ13 photos of Franconite associated with Niobokupletskite at this locality. |
| Siderite | ⓘ13 photos of Franconite associated with Siderite at this locality. |
| Rhodochrosite | ⓘ11 photos of Franconite associated with Rhodochrosite at this locality. |
| Gaidonnayite | ⓘ11 photos of Franconite associated with Gaidonnayite at this locality. |
| Zircon | ⓘ8 photos of Franconite associated with Zircon at this locality. |
| Data |
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| Mineral Data: | Click here to view Franconite 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 (50 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 22113 |
| Long-form Identifier: | 1:3:22113:5 |
| GUID (UUID V4): | cf1b0f90-f94b-4dfc-8d36-4f9352d34412 |
| Nearest other occurrences of Franconite |
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| 19.5km (12.1 miles) | ⓘDemix-Varennes quarry, Saint-Amable sill, Varennes & St-Amable, Lajemmerais RCM, Montérégie, Québec, Canada |
| 36.2km (22.5 miles) | ⓘFrancon quarry, Montréal, Québec, Canada |
| References |
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Poudrette quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec, Canada