Sussexite

Formula: MnBO2(OH)

Origin of name: after locality Sussex County, New Jersey, USA

 

Crystal system: monoclinic

Crystal class: 2/m

Twinning: 

Unit cell: 

 

Colour: white, pinkish, straw-yellow

Diaphaneity: 

Luster: silky to dull or earthy

Habit: fibrous veinlets, masses, dense or chalky

Hardness: 3 to 3.5

Specific gravity: 3.30

Cleavage: none

Tenacity: 

Streak: white

 

Synonyms/varieties:

 

Comments: series with szaibelyite

 

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