Nahpoite

Formula: Na2HPO4

Origin of name: from composition

 

Crystal system: monoclinic

Crystal class: 2 or 2/m

Twinning: 

Unit cell: 

 

Colour: white

Diaphaneity: 

Luster: 

Habit: grains, elongated to 4 micron

Hardness: 1

Specific gravity: 2.58

Cleavage: none

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments: 

 

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