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Sodalite (Na8Al6Si6O24Cl2) NS2905B |
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![Image: NS2905B.jpg](../minerals_jpg/NS2905B.jpg) |
![Detail: NS2905Bdetail.jpg](../minerals_jpg/NS2905Bdetail.jpg) |
Crystal system |
isometric. |
Habit |
found in crystal form as dodecahedrons; also massive; twinning is common. |
Cleavage |
poor. |
Fracture |
uneven or conchoidal. |
Hardness |
5.5-6 |
Specific Gravity |
2.3 |
Color |
can be colorless, white, yellow, green, light or dark blue and red. |
Luster |
transparent to translucent with a greasy to vitreous luster. |
Streak |
uncolored. |
Distinguishing features |
its dodecahedral crystals are typical. |
Uses |
in jewelry and for carved ornaments.
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