Reevesite

Formula: Ni₆Fe₂(CO₃)(OH)₁₆.4H₂O

Origin of name: for F. Reeves, American geologist

Crystal system: hexagonal

Crystal class: -3 2/m

Twinning:

Unit cell: 

Colour: yellow to greenish yellow

Diaphaneity: 

Luster: 

Habit: crystals hexagonal platelets to 0.1 mm across, 0.2 mm thick, in aggregates

Hardness: 

Specific gravity: 2.80 to 2.88

Cleavage: none

Tenacity: 

Streak: 

Synonyms/varieties:

Comments: from weathered meteorites and nickel ore deposits