Name:

hilgardite

A photo of the mineral hilgardite

Class:

Borates

Chemistry:

Ca2 B5O9 Cl H2O

Color(s):

colorless, red-orange streak: white

Hardness:

5

SpecGrav:

2.7

Fracture:

Cleavage:

perfect 2 directions

Crystal:

Triclinic

Envronment:

Association:

other borates, boracite

Locals:

| LA, USA | England |

Misc:

Images 1-4 contain orange hilgardite on white boracite.

Photos
& Locals:

1.) Boulby Mine, Loftus, Cleveland, UK
2.) Boulby Mine, Loftus, Cleveland, UK

3.) Boulby Mine, Loftus, Cleveland, UK
4.) Boulby Mine, Loftus, Cleveland, UK

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