Compreignacite

Formula:  K2(UO2)6O4(OH)2 . 8H2O

 

Origin of name:  After locality; Compreignac, Haute-Vienne, France

 

Crystal system:  Orthorhombic

Crystal class:  2/m 2/m 2/m

Twinning:

Unit cell:

 

Colour:  Yellow

Diaphaneity:

Luster:

Habit:  Crystals minute, flattened; twinning common

Hardness:

Specific gravity:  5.03

Cleavage:  1; {001} perfect

Tenacity:

Streak:

 

Synonyms/varieties:

 

Comments:

 

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