NOVAKITE


Meaning of NOVAKITE in English

General Information:

Chemical Formula:

(Cu,Ag)21As10

Composition:

(Molecular Weight = 2,172.33 gm)

Copper 55.58 % Cu

Silver 9.93 % Ag

Arsenic 34.49 % As

Empirical Formula:

Cu19Ag2As10

IMA Status:

Approved IMA 1959

Locality:

Cerny Dul mine, near Berghaus, Czech Republic.

Name Origin:

Named for Jiri Novak (1902-1971), Czech mineralogist.

Physical Properties:

Cleavage:

None

Color:

steel gray or black.

Density:

6.7

Diaphaniety:

Opaque

Habits:

Aggregates - Made of numerous individual crystals or clusters., Tarnishes - Freshly fractured surfaces form a surface oxidation film,

Hardness:

3-3.5 - Calcite-Copper Penny

Luster:

Metallic

Streak:

black

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .