Mindat Logo

Tunellite, Ulexite

Tunellite : SrB6O9(OH)2·3H2O, Ulexite : NaCa[B5O6(OH)6]·5H2O
minID: JE1-W2K

Dimensions: 60 mm x 50 mm x 45 mm
Weight: 101.4 g

Sharp glassy somewhat translucent almost blockey tunellite crystals growing on fibrous ulexite. There were probably less than a dozen good specimens found of this type and this may be the best one. They were found growing in long acicular crystals of ulexite that had to be brushed away to expose the tunellite. I got the specimen in 1965 as part of the Denny Sutherland collection. The scale at the bottom of the specimen is an inch with a rule at one cm.

This photo has been shown 318 times

Photo added: 21st Jun 2009

View User Page & Photos View Tunellite Gallery Create Talk Page Light Background

Mineral and/or Locality  
Search Google  
Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
Current server date and time: December 20, 2014 21:37:52
Mineral and Locality Search
and/or Locality:
Fade toolbar when not in focusFix toolbar to bottom of page
Hide Social Media Links
Slideshow frame delay seconds