Cascandite

Formula:  Ca(Sc,Fe)Si3O8(OH)

Origin of name:  From composition, calcium and scandium

 

Crystal system:  Triclinic

Crystal class:  -1

Twinning:

Unit cell:

 

Colour:  Pale pink

Diaphaneity:

Luster:  Vitreous

Habit:  Crystals, tiny platelets

Hardness:

Specific gravity:  3.01

Cleavage:  2; {100} and {001} good

Tenacity:

Streak:

 

Synonyms/varieties:

 

Comments:

 

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