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Nenadkevichite ((Na,Ca,K)(Nb,Ti)Si2O6(O,OH)·2H2O) NS2694 |
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| Crystal system | orthorhombic. |
| Habit | prismatic, tabular or stacked clusters of spherical aggregates. |
| Cleavage | indistinct. |
| Fracture | none. |
| Hardness | 5 |
| Specific Gravity | 2.86 |
| Color | colorless, pale pink, rose/pink, orange and brown/red. |
| Luster | transparent to translucent with a vitreous, pearly or dull luster. |
| Streak | light pink. |
| Distinguishing features | unfortunately, this mineral has a very close resemblance to serandite so it is difficult to distinguish visually. |
| Uses | of interest to collectors and researchers. |
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