Charlesite

Formula:  Ca6(Al,Si)2(SO4)2B(OH)4(OH,O)12  . 26H2O

Origin of name:  For Charles Palache, American Mineralogist

 

Crystal system:  Hexagonal

Crystal class:  3m

Twinning:

Unit cell:

 

Colour:  Colourless

Diaphaneity:  Transparent

Luster:  Vitreous

Habit:  Crystals hexagonal, tabular

Hardness:  2.5 to 1.7

Specific gravity:

Cleavage:  1; {10-10} perfect

Tenacity:

Streak:  White

 

Synonyms/varieties:

 

Comments:

 

Back to Alphabetical list Colour photos Thin sections SEM images TEM images vibrational spectra description IR spectra Raman spectra N-IR spectra F-IR spectra IES spectra