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Elpidite (Na2ZrSi6O15·3H2O) NS2859 |
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![Image: NS2859.jpg](../minerals_jpg/NS2859.jpg) |
Crystal system |
orthorhombic. |
Habit |
vertically striated prismatic crystals. |
Cleavage |
perfect. |
Fracture |
splintery. |
Hardness |
5 |
Specific Gravity |
2.5 |
Color |
colorless, yellow/white, or if it contains impurities it can be light red. |
Luster |
transparent with a silky or vitreous luster. |
Streak |
none. |
Distinguishing features |
its prismatic needles have a tendency to diverge from one point |
Uses |
of interest to collectors and researchers.
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