Larderellite

General Information:
 Chemical Formula:
(NH4)B5O6(OH)4
 Composition:
(Molecular Weight = 236.11 gm)
Boron 22.89 % B 
Hydrogen 3.42 % H 
Nitrogen 5.93 % N 
Oxygen 67.76 % O 
 Empirical Formula:
NH4B5O6(OH)4
Physical Properties:
 Cleavage:
[100] Perfect
 Color:
yellowish or white.
 Density:
1.905
 Hardness:
1-2 - Between Talc and Gypsum
 Streak:
white
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