Sklodowskite

Formula: Mg(UO2)2(SiO3OH)2.2H2O

Origin of name: for M. Sklodowska Curie, Polish-French physicist

 

Crystal system: monoclinic

Crystal class: 2/m

Twinning: on {001} or {100}

Unit cell: a = 17.28 Å, b = 7.03 Å, c = 6.56 Å, b = 105.9°

 

Colour: pale yellow to greenish yellow

Diaphaneity: 

Luster: subvitreous

Habit: crystals prismatic acicular, as rosettes, mammillary crusts, radial fibrous aggregates, massive, granular or earthy

Hardness: 2 to 3

Specific gravity: 3.64

Cleavage: 1; {100} perfect

Tenacity: brittle

Streak: yellow

 

Synonyms/varieties:

 

Comments: 

 

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