Wardsmithite

Formula: Ca₅MgB₂₄O₄₂.30H₂O

Origin of name: for Ward C. Smith (1906-), American geologist

Crystal system: Hexagonal

Crystal class: unknown

Twinning:

Unit cell: 

Colour: Colourless, white

Diaphaneity: Transparent

Luster: Vitreous

Habit: crystals platy, to 15 micron, in aggregates to 75 micron, nodular

Hardness: 2.5

Specific gravity: 1.88

Cleavage: 1; probably {0001}good

Tenacity: 

Streak: White

Synonyms/varieties:

Comments: