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Name: |
hilgardite |
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Class: |
Borates |
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Chemistry: |
Ca2 B5O9 Cl · H2O |
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Color(s): |
colorless, red-orange streak: white |
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Hardness: |
5 |
SpecGrav: |
2.7 |
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Fracture: |
Cleavage: |
perfect 2 directions |
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Crystal: |
Triclinic |
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Envronment: |
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Association: |
other borates, boracite |
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Locals: |
| LA, USA | England | |
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Misc: |
Images 1-4 contain orange hilgardite on white boracite. |
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Photos |
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1.) Boulby Mine, Loftus, Cleveland, UK |
3.) Boulby Mine, Loftus, Cleveland, UK |
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