Meaning of ALUNOGEN in English

ALUNOGEN

General Information:

Chemical Formula:

Al2(SO4)3·17(H2O)

Composition:

(Molecular Weight = 639.45 gm)

Aluminum 4.22 % Al

Hydrogen 5.67 % H

Sulfur 15.04 % S

Oxygen 75.06 % O

Empirical Formula:

Al(SO4)3·18(H2O)

Name Origin:

From the Latin alumen ="alum" and the Greek genos ="origin."

Physical Properties:

Cleavage:

[010] Perfect

Color:

white, yellowish white, reddish white, or yellowish white.

Density:

1.65 - 1.78, Average = 1.71

Diaphaniety:

Transparent

Habits:

Acicular - Occurs as needle-like crystals., Fibrous - Crystals made up of fibers., Encrustations - Forms crust-like aggregates on matrix.

Hardness:

1.5-2 - Talc-Gypsum

Luminescence:

None.

Luster:

Vitreous - Pearly

Streak:

white

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .