Altisite

General Information:
 Chemical Formula:
Na3K6Ti2Al2Si8O26Cl3
 Composition:
(Molecular Weight = 1,200.31 gm)
Potassium 19.54 % K 
Sodium 5.75 % Na
Titanium 7.98 % Ti
Aluminum 4.50 % Al
Silicon 18.72 % Si
Chlorine 8.86 % Cl
Oxygen 34.66 % O 
 Empirical Formula:
Na3K6Ti2Al2(Si8O26)Cl3
 Environment:
In the interstices of pectolite crystals in a hyperagpaitic pegmatite.
 IMA Status:
Approved IMA 1993
 Locality:
TL: In a drill core from the Oleny Stream apatite deposit in the southeastern part of the Khibina alkaline massif, Kola Peninsula, Russia.
 Name Origin:
Name for the elements Al, Ti, and Si in the composition.
Physical Properties:
 Cleavage:
None
 Color:
white.
 Density:
2.64 - 2.67, Average = 2.65
 Diaphaniety:
Transparent
 Habits:
Anhedral Grains - Granular minerals without the expression of crystal shapes, ,
 Hardness:
6 - Orthoclase
 Luminescence:
Non-fluorescent.
 Luster:
Vitreous (Glassy)
 Streak:
white
More details...