Meaning of LUDWIGITE in English

LUDWIGITE

General Information:

Chemical Formula:

Mg2Fe+++BO5

Composition:

(Molecular Weight = 195.26 gm)

Magnesium 24.89 % Mg

Iron 28.60 % Fe

Boron 5.54 % B

Oxygen 40.97 % O

Empirical Formula:

Mg2Fe2+BO5

Name Origin:

Named after the Austrian chemist, E. Ludwig (1842-1915).

Physical Properties:

Cleavage:

[001] Perfect

Color:

dark green, black, or black green.

Density:

3.7 - 4, Average = 3.85

Diaphaniety:

Opaque

Habits:

Fibrous - Crystals made up of fibers., Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite), Massive - Fibrous - Distinctly fibrous fine-grained for ms.

Hardness:

5.5 - Knife Blade

Luminescence:

None.

Luster:

Silky

Streak:

greenish black

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .