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Name: |
uvite (var of tourmaline) |
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Class: |
Silicates |
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Chemistry: |
(Ca,Na)(Mg,Fe++)3Al5Mg(BO3)3Si6O18(OH,F)4 |
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Color(s): |
greenish streak: light brown |
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Hardness: |
7.5 |
SpecGrav: |
3.1 - 3.25 |
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Fracture: |
sub conchoidal |
Cleavage: |
indistinct |
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Crystal: |
Trigonal - Ditrigonal Pyramidal |
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Envronment: |
pegmatites, hydrothermal veins, schists |
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Association: |
quartz, feldspar, mica, beryl |
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Locals: |
| Brazil | Canada | Greenland | Nepal | Sri Lanka | N.J., N.Y., USA | |
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Misc: |
Named after its locality, province Uva, Sri Lanka. |
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