TUHUALITE


Meaning of TUHUALITE in English

General Information:

Chemical Formula:

[ ](Na,K)Fe++Fe+++[Si6O15]

Composition:

(Molecular Weight = 546.41 gm)

Potassium 1.43 % K

Sodium 3.37 % Na

Iron 20.44 % Fe

Silicon 30.84 % Si

Oxygen 43.92 % O

Empirical Formula:

Na0.8K0.2Fe2+Fe3+Si6O15

Environment:

In volcanic rock.

Locality:

Mayor (Tuhua) Island, Bay of Plenty (Opo Bay), Norht Island, New Zealand.

Name Origin:

Named for the locality.

Physical Properties:

Cleavage:

[100] Good, [010] Good, [001] Good

Color:

blue violet, dark blue, or black.

Density:

2.89

Hardness:

3-4 - Calcite-Fluorite

Streak:

reddish gray

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .