Meaning of ALLANITE-(CE) in English

ALLANITE-(CE)

General Information:

Chemical Formula:

(Ce,Ca,Y)2(Al,Fe+++)3(SiO4)3(OH)

Composition:

(Molecular Weight = 614.71 gm)

Calcium 3.91 % Ca

Cerium 27.35 % Ce

Yttrium 4.34 % Y

Aluminum 9.88 % Al

Iron 6.81 % Fe

Silicon 13.71 % Si

Hydrogen 0.16 % H

Oxygen 33.84 % O

Empirical Formula:

Ce1.2Ca0.6Y0.3Al2.25Fe3+0.75(SiO4)3(OH)

IMA Status:

Approved IMA 1959

Locality:

TL: Greenland, Qaqarssuatsiaq

Name Origin:

Named after the Scottish mineralogist, T. Allan (1777-1833).

Physical Properties:

Cleavage:

[001] Imperfect, [100] Imperfect

Color:

brown, reddish brown, or black.

Density:

3.3 - 4.2, Average = 3.75

Diaphaniety:

Translucent to opaque

Habits:

Massive - Granular - Common texture observed in granite and other igneous rock., Disseminated - Occurs in small, distinct particles dispersed in matrix.,

Hardness:

5.5 - Knife Blade

Luminescence:

None.

Luster:

Vitreous - Greasy

Streak:

grayish brown

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .