Meaning of AEGIRINE in English

AEGIRINE

General Information:

Chemical Formula:

NaFe+++Si2O6

Composition:

(Molecular Weight = 231.00 gm)

Sodium 9.95 % Na

Iron 24.18 % Fe

Silicon 24.32 % Si

Oxygen 41.56 % O

Empirical Formula:

NaFe3+(Si2O6)

Environment:

Sodium rich igneous nepheline syenites.

IMA Status:

Approved IMA 1987

Locality:

TL: Norway, Buskerud, Kongsberg. Magnet Cove, Hot Spring County, Arkansas.

Name Origin:

Named after the Teutonic god of the sea. Acmite is from the Greek "point" in allusion to the pointed crystals.

Physical Properties:

Cleavage:

[???] Distinct, [???] Distinct

Color:

green, greenish black, reddish brown, or black.

Density:

3.5 - 3.54, Average = 3.52

Diaphaniety:

Subtransparent to translucent to opaque

Habits:

Acicular - Occurs as needle-like crystals., ,

Hardness:

6-6.5 - Orthoclase-Pyrite

Luminescence:

Non-fluorescent.

Luster:

Vitreous - Resinous

Streak:

yellowish gray

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .