Suanite

Formula: Mg2B2O5

Origin of name: after locality Suan County, North Korea

 

Crystal system: monoclinic

Crystal class: 2/m

Twinning: 

Unit cell: a = 12.31, b = 3.12, c = 9.2, β = 104.33°

 

Colour: white, gray white

Diaphaneity: 

Luster: silky to pearly

Habit: fibrous aggregates

Hardness: 5.5

Specific gravity: 2.91

Cleavage: 1; prismatic, perfect

Tenacity: 

Streak: White

 

Synonyms/varieties:

 

Comments: 

 

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