Widgiemoolthalite

Formula: Ni5(CO3)4(OH)2.4-5H2O

Origin of name: after locality, 132 North Nickel mine, 4 km SW of Widgiemooltha, 80 km S of Kalgoorlie, Western Australia, Australia

 

Crystal system: Monoclinic

Crystal class: 2/m

Twinning: possible

Unit cell: a = 10.06 Å, b = 8.75 Å, c = 8.32 Å, b = 114.3°

 

Colour: Bluish green, green

Diaphaneity: Transparent to semitransparent

Luster: Silky

Habit: spheroids 1-2 mm across of radiating fibers, massive

Hardness:  3.5

Specific gravity: 3.13

Cleavage: 

Tenacity: Splintery, brittle

Streak: Pale blue-green, apple green

 

Synonyms/varieties:

 

Comments: 

 

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