Delindeite

Formula:  (Na,K)3(Ba,Ca)4(Ti,Fe,Al)6Si8O26(OH)14

Origin of name:  For Henry deLinde, American amateur mineralogist

 

Crystal system:  Monoclinic

Crystal class:2/m

Twinning:

Unit cell:

 

Colour:  Pinkish-gray

Diaphaneity:  Translucent

Luster:  Resinous, pearly

Habit:  Micrometer size lath-like or flake-like crystals forming tiny compact spherulitic aggregates to 1 mm

Hardness:

Specific gravity:  3.3

Cleavage:  1; {001} good

Tenacity:

Streak:

 

Synonyms/varieties:

 

Comments:

 

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