Lorandite

Formula:  TiAsS2

Origin of name:  For E. Lorand, Hungarian physicist

 

Crystal system:  Monoclinic

Crystal class:  2/m

Twinning: 

Unit cell: a = 12.29 Å, b = 11.34 Å, c = 6.14 Å, β = 104.6°

 

Colour:  Red, surface may be blackish lead-gray

Diaphaneity: 

Luster:  Metallic adamantine

Habit:  Crystals tabular or short prismatic, striated; thin veinlets; fine granular

Hardness:  2 to 2.5

Specific gravity:  5.54 to 5.56

Cleavage:  3; {100} perfect, {001} and {201} distinct

Tenacity:  Flexible, readily separates

Streak:  Cerise red

 

Synonyms/varieties:

 

Comments: 

 

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