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Franconite (Na2Nb4O11·H2O) D04366.02 |
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| Crystal system | monoclinic. |
| Habit | radiating, bladed globules found as coatings on weloganite, quartz and calcite; sometimes. |
| Cleavage | not observed. |
| Fracture | uneven. |
| Hardness | not determined |
| Specific Gravity | 2.71 |
| Color | colorless to white. |
| Luster | vitreous to silky luster. |
| Streak | none. |
| Distinguishing features | the radiating bladed habit and as of yet found as extremely small samples.. |
| Uses | of interest to scientists and collectors. |
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