ORTHOWALPURGITE


Meaning of ORTHOWALPURGITE in English

General Information:

Chemical Formula:

(UO2)Bi4O4(AsO4)2·2(H2O)

Composition:

(Molecular Weight = 1,483.82 gm)

Uranium 16.04 % U

Bismuth 56.34 % Bi

Arsenic 10.10 % As

Hydrogen 0.27 % H

Oxygen 17.25 % O

Empirical Formula:

(UO2)Bi4O4(AsO4)2·2(H2O)

Environment:

May have formed by weathering of emplectite, wittichenite or other Bi-bearing ore minerals. Dimorphous with walpugite.

IMA Status:

Approved IMA

Locality:

The Schmiedestollen, Wittichen, Black Forest, Germany.

Name Origin:

It is an orthorhombic polymorph of walpurgite.

Physical Properties:

Cleavage:

[001] Indistinct

Color:

pale yellow.

Density:

6.5

Diaphaniety:

Transparent

Habits:

Tabular - Form dimensions are thin in one direction., Crystalline - Fine - Occurs as well-formed fine sized crystals.,

Hardness:

4.5 - Between Fluorite and Apatite

Luminescence:

Non-fluorescent.

Luster:

Adamantine

Streak:

pale yellow

More details...

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