Ulexite
Ulexite
Item-No.: MIN4005 Price: 55.00 EUR
Kramer Borate deposit, Boron, Kramer District, Kern Co., California, USA
Synonyms: | Boronatro-calcite, Cotton-ball Borax, Franklandite, Hayesite, Natroborocalcite, Natronboroncalcite, Raphite, Stiberite, TV stone |
Classification: | Borates |
Chemical formula: | NaCa[B5O6(OH)6] · 5H2O |
Crystal system: | Triclinic |
Density (g/cm3): | 1,955 measured and calculated |
Tenacity: | Brittle |
Cleavage: | Perfect on {010}, good on {110}, poor on {110} |
Fracture: | Irregular/uneven |
Hardness (Mohs): | 2,5 |
Colour: | Colourless, white, grey |
Lustre: | Vitreous, silky |
Streak: | White |
Type locality: | Iquique Province, Tarapacá Region, Chile |
Application: | One of the main source for boron, chemical industry, gemstone |