| Locality type: | Mine |
| Classification |
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| Species: | Saponite |
| Formula: | Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O |
| Comments: | Any crystals of smectite are astonishing. This locality and several nearby produce the world's best saponite crystals. |
| Habit: | Radial sprays of white acicular crystals to 1 mm! |
| Colour: | White, sometimes has light red or green coloring. |
| Quality for species: | Excellent - world class for species or very significant. (!!) |
| Abundance at site: | Common |
| Confirmation |
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| Validity: | Confirmed |
| Confirmation Methods: | XRD |
| Associated Minerals Based on Photo Data: |
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| Quartz | 18 |
| Epidote | 17 |
| Calcite | 5 |
| Pumpellyite Subgroup | 3 |
| Malachite | 3 |
| Kinoite | 2 |
| Pumpellyite-(Mg) | 2 |
| Chalcocite | 1 |
| Analcime | 1 |
| Data |
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| Mineral Data: | Click here to view Saponite data |
| Locality Data: | Click here to view Laurium Mine, Osceola Township, Houghton County, Michigan, USA |
| Photo Gallery | View Gallery (17 photos) |
| Data Identifiers |
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| Mindat Occurrence Record ID: | 414494 |
| Long-form Identifier: | 1:3:414494:6 |
| GUID (UUID V4): | 0 |
| Nearest other occurrences of Saponite |
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| 0.7km (0.5 miles) | ⓘOsceola Amygdaloid, Osceola Township, Houghton County, Michigan, USA |
| 1.4km (0.9 miles) | ⓘLa Salle Mine, Osceola Township, Houghton County, Michigan, USA |
| 3.3km (2.1 miles) | ⓘTamarack Mine, Tamarack, Osceola Township, Houghton County, Michigan, USA |
| 4.2km (2.6 miles) | ⓘSt. Louis Mine Exploration, Schoolcraft Township, Houghton County, Michigan, USA |
| 5.1km (3.2 miles) | ⓘNo. 2 shaft, Centennial Mine, Centennial Heights, Calumet Township, Houghton County, Michigan, USA |
| 5.7km (3.6 miles) | ⓘSouth Kearsarge Mine, Kearsarge, Calumet Township, Houghton County, Michigan, USA |
| 6.9km (4.3 miles) | ⓘWolverine No. 2 shaft, Wolverine Mine, Wolverine, Calumet Township, Houghton County, Michigan, USA |
| 7.2km (4.4 miles) | ⓘKearsarge Mine, Kearsarge, Calumet Township, Houghton County, Michigan, USA |
| 10.5km (6.5 miles) | ⓘAhmeek Mine, Ahmeek, Allouez Township, Keweenaw County, Michigan, USA |
| 14.1km (8.7 miles) | ⓘIroquois Mine, Seneca, Allouez Township, Keweenaw County, Michigan, USA |
| References |
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Laurium Mine, Osceola Township, Houghton County, Michigan, USA