Meaning of AENIGMATITE in English

AENIGMATITE

General Information:

Chemical Formula:

Na2Fe++5TiSi6O20

Composition:

(Molecular Weight = 861.60 gm)

Sodium 5.34 % Na

Titanium 5.56 % Ti

Iron 32.41 % Fe

Silicon 19.56 % Si

Oxygen 37.14 % O

Empirical Formula:

Na2Fe2+5TiSi6O20

Environment:

Sodalite-syenite rocks.

IMA Status:

Approved IMA 1963

Locality:

TL: Julianehaab district in southern Greenland.

Physical Properties:

Cleavage:

[???] Perfect

Color:

brown or black.

Density:

3.74 - 3.85, Average = 3.79

Diaphaniety:

Opaque

Habits:

Lamellar - Thin laminae producing a lamellar structure., ,

Hardness:

5-6 - Between Apatite and Orthoclase

Luminescence:

Non-fluorescent.

Luster:

Subadamantine

Streak:

reddish brown

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .