Nordenskiöldine

Formula: CaSnB₂O₆

Origin of name: for Nils Nordenskiöld, Swedish mineralogist

Crystal system: hexagonal

Crystal class: -3

Twinning: 

Unit cell: 

Colour: colourless, yellow

Diaphaneity: transparent

Luster: vitreous, pearly on {0001}

Habit: crystals thin to thick tabular, or thick lens-like, parallel growths

Hardness: 5.5 to 6

Specific gravity: 4.20

Cleavage: 2; {0001} perfect, {10-11} indistinct

Tenacity: 

Streak: 

Synonyms/varieties:

Comments: isostructural with tusionite and dolomite