JOHANNITE


Meaning of JOHANNITE in English

General Information:

Chemical Formula:

Cu(UO2)2(SO4)2(OH)2·8(H2O)

Composition:

(Molecular Weight = 973.87 gm)

Uranium 48.88 % U

Copper 6.53 % Cu

Hydrogen 1.86 % H

Sulfur 6.59 % S

Oxygen 36.14 % O

Empirical Formula:

Cu(UO2)2(SO4)2(OH)2·8(H2O)

Physical Properties:

Cleavage:

[100] Good

Color:

yellow or greenish yellow.

Density:

3.3 - 3.5, Average = 3.4

Diaphaniety:

Transparent to Translucent

Habits:

Druse - Crystal growth in a cavity which results in numerous crystal tipped surfaces., Reniform - "Kidney like" in shape (e.g.. hematite)., Massive - Uniformly indistinguishable cryst als forming large masses.

Hardness:

2 - Gypsum

Luminescence:

Non-fluorescent.

Luster:

Vitreous (Glassy)

Streak:

light green

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .