Meyerhofferite

Formula:  Ca2B6O6(OH)10 . 2H2O

Origin of name:  For W. Meyerhoffer, German chemist

 

Crystal system:  Triclinic

Crystal class:  -1

Twinning: 

Unit cell: a = 6.62 Å, b = 8.32 Å, c = 6.49 Å, α = 90.6°, β = 101.9°, γ = 86.6°

 

Colour:  Colourless to white

Diaphaneity:  Transparent to translucent

Luster:  Vitreous

Habit:  Crystals prismatic; fibrous

Hardness:  2

Specific gravity:  2.120

Cleavage:  3; {010} perfect, {100} and {1-10} imperfect

Tenacity: 

Streak: 

 

Synonyms/varieties:

 

Comments: 

 

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