General Information:
Chemical Formula:
Na2Ti2Si2O9
Composition:
(Molecular Weight = 341.91 gm)
Sodium 13.45 % Na
Titanium 28.01 % Ti
Silicon 16.43 % Si
Oxygen 42.12 % O
Empirical Formula:
Na2Ti2Si2O9
Environment:
Alkaline magmatic and pegmatitic rocks.
Locality:
Kola Peninsula, Russia.
Name Origin:
Ramsayite is named after V. Ramsay.
Physical Properties:
Cleavage:
[100] Distinct, [110] Distinct
Color:
brown, colorless, green, white, or light blue.
Density:
3.4
Diaphaniety:
Transparent to translucent to opaque
Habits:
Acicular - Occurs as needle-like crystals., Granular - Generally occurs as anhedral to subhedral crystals in matrix., Massive - Fibrous - Distinctly fibrous fine-grained forms.
Hardness:
6 - Orthoclase
Luminescence:
Non-fluorescent.
Luster:
Vitreous - Greasy
Streak:
light brownish yellow
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