| Locality type: | Open-Cast Mine |
| Classification |
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| Species: | Diopside |
| Formula: | CaMgSi2O6 |
| Habit: | prismatic, bladed |
| Colour: | white, lavender, green |
| Confirmation |
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| Validity: | Believed Valid |
| Associated Minerals Based on Photo Data: |
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| Grossular | 485 |
| - var Chrome-bearing Grossular | 27 |
| - var Hessonite | 24 |
| Vesuvianite | 85 |
| - var Manganese-bearing Vesuvianite | 6 |
| - var Chrome-Vesuvianite | 3 |
| Prehnite | 37 |
| Pectolite | 30 |
| Clinochlore | 19 |
| Heazlewoodite | 17 |
| Wollastonite | 15 |
| Chromite | 12 |
| Rodingite | 7 |
| Albite | 7 |
| Andradite | 4 |
| - var Demantoid | 1 |
| Muscovite | 2 |
| Quartz | 2 |
| Apophyllite Group | 2 |
| Allanite-(Ce) | 1 |
| Allanite Group | 1 |
| Calcite | 1 |
| Wollastonite Group | 1 |
| Data |
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| Mineral Data: | Click here to view Diopside data |
| Locality Data: | Click here to view Jeffrey Mine, Val-des-Sources, Les Sources RCM, Estrie, Québec, Canada |
| Photo Gallery | View Gallery (64 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 21574 |
| Long-form Identifier: | 1:3:21574:5 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Diopside |
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| 12.1km (7.5 miles) | ⓘSterrett mine, Saint-Cyr, Canton de Cleveland, Le Val-Saint-François RCM, Estrie, Québec, Canada |
| 41.5km (25.8 miles) | ⓘOrford Nickel mine, St-Denis-de-Brompton, Le Val-Saint-François RCM, Estrie, Québec, Canada |
| 50.7km (31.5 miles) | ⓘNormandie mine, Saint-Joseph-de-Coleraine, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada |
| 54.0km (33.6 miles) | ⓘMine Lac d'Amiante (Lake Asbestos Mine; "LAB Mine"; "Black Lake Mine"), Saint-Joseph-de-Coleraine, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada |
| 55.3km (34.4 miles) | ⓘCaribou pit (Caribou mine), Saint-Joseph-de-Coleraine, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada |
| 55.6km (34.5 miles) | ⓘBritish Canadian mine (B.C. 1 mine; B.C. 2 mine; Martin mine; Black Lake mine; American mine; Dauville mine), Black Lake, Thetford Mines, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada |
| 56.7km (35.3 miles) | ⓘUnion mine (Southwark mine), Black Lake, Thetford Mines, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada |
| 57.6km (35.8 miles) | ⓘMaple Leaf mine, Black Lake, Thetford Mines, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada |
| 59.8km (37.1 miles) | ⓘMontréal Chrome pit (Montréal mine; Montréal-Coleraine mine; Paré pit; Black Lake Chrome quarry), Saint-Joseph-de-Coleraine, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada |
| 60.0km (37.3 miles) | ⓘKing Beaver mine (Jacob mine; Beaver-1 mine; Beaver-2 mine), Thetford Mines, Les Appalaches RCM, Chaudière-Appalaches, Québec, Canada |
| References |
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Jeffrey Mine, Val-des-Sources, Les Sources RCM, Estrie, Québec, Canada