Lehnerite

Formula:  Mn(UO2)2(PO4)2 . 8H2O

Origin of name:  For F. Lehner, German mineral collector

 

Crystal system:  Monoclinic

Crystal class:  2/m

Twinning: 

Unit cell: 

 

Colour:  Bronze-yellow to yellow

Diaphaneity: 

Luster:  Vitreous to pearly iridescent

Habit:  Thin platy pseudotetragonal crystals to 1 mm

Hardness:  2 to 3

Specific gravity:

Cleavage:  4; {010} perfect, {101}, {-101} and {100} less perfect

Tenacity: 

Streak:  Whitish yellow

 

Synonyms/varieties:

 

Comments:  Mn analogue of bassetite

 

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