Meaning of ALLOPHANE in English

ALLOPHANE

General Information:

Chemical Formula:

Al2O3·(SiO2)1·3-2·((H2O))2·5-3

Composition:

(Molecular Weight = 225.11 gm)

Aluminum 23.97 % Al

Silicon 16.22 % Si

Hydrogen 2.24 % H

Oxygen 57.57 % O

Empirical Formula:

(Al2O3)(SiO2)1.3·2.5(H2O)

Name Origin:

From the Greek allos - "other" and phanos - "to appear."

Physical Properties:

Cleavage:

None

Color:

white, green, blue, yellow, or brown.

Density:

1.9

Diaphaniety:

Translucent

Habits:

Encrustations - Forms crust-like aggregates on matrix., Stalactitic - Shaped like pendant columns as stalactites or stalagmites (e.g. calcite)., Botryoidal - "Grape-like" rounded form s (e.g.. malachite).

Hardness:

3 - Calcite

Luminescence:

None.

Luster:

Waxy

Streak:

white

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .