Cualstibite

Formula:  Cu6Al2Sb3O18 . 16H2O

Origin of name:  From copper (Latin cuprum), aluminium and antimony (Latin stibium)

 

Crystal system:  Hexagonal

Crystal class:  3

Twinning:

Unit cell:

 

Colour:  Blue-green

Diaphaneity:  Transparent

Luster:  Vitreous

Habit:  Crystals columnar trigonal to .05 mm, crustifications

Hardness:  2

Specific gravity:  3.18

Cleavage:

Tenacity:

Streak:  Bluish white

 

Synonyms/varieties:

 

Comments:

 

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