RESEARCH GROUP

button mineral resources
Mineral Resources and Geofluids
 

Ore Deposits Introductory Course

Prof. Lluís Fontboté and collaborators

 

Slides to Chapter M

Ore deposits in sedimentary rocks. Part IV: Chemical sediments (without Fe and Mn)

 

Boron deposits related to volcanic exhalations

Boron

Boron open pit, Kern Co, California, USA

0 ft
- Alluvium
180 ft
- Arkosic Sandstones
980 ft
- Claystone with Colemanite Ca2B6O11.5H2O
- Tuff with Ulexite NaCaB5O6(OH)6.5H2O
- Claystone with Ulexite NaCaB5O6(OH)6.5H2O
- Borax ore Na2B4O5(OH)4.8H2O (upper ore)
- Borax ore with Kernite Na2B4O6(OH)2.3H2O (middle and lower ore)
- Shale with Ulexite NaCaB5O6(OH)6.5H2O and probertite NaCaB5O7(OH)4.3H2O
- Shale
1380 ft
- Basalt

Cf. J. W. Siefke, 1991, The Diversity of Mineral and Energy Resources of Southern California (SEG)
Photo Pierre Perroud, 28 Feb. 1992. Copyright © 2000 - Pierre Perroud - All Rights Reserved.

 

[Mineral Resources and Geofluids]

 


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