Meaning of GAHNITE in English

GAHNITE

General Information:

Chemical Formula:

ZnAl2O4

Composition:

(Molecular Weight = 183.35 gm)

Aluminum 29.43 % Al

Zinc 35.66 % Zn

Oxygen 34.90 % O

Empirical Formula:

ZnAl2O4

Environment:

Metamorphic and pegmatitic rocks.

Locality:

Falun, Sweden.

Name Origin:

Named after the Swedish chemist and mineralogist, J. G. Gahn (1745-1818).

Physical Properties:

Cleavage:

[111] Indistinct

Color:

bluish green, grayish green, deep leek green, greenish black, or bluish black.

Density:

4 - 4.6, Average = 4.3

Diaphaniety:

Subtransparent to opaque

Habits:

Euhedral Crystals - Occurs as well-formed crystals showing good external form., Massive - Granular - Common texture observed in granite and other igneous rock., Striated - Parallel li nes on crystal surface or cleavage face.

Hardness:

8 - Topaz

Luminescence:

None.

Luster:

Vitreous (Glassy)

Streak:

gray

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .