GOTZENITE


Meaning of GOTZENITE in English

General Information:

Chemical Formula:

(Ca,Na)3(Ti,Al)Si2O7(F,OH)2

Composition:

(Molecular Weight = 363.79 gm)

Sodium 1.58 % Na

Calcium 30.30 % Ca

Titanium 9.87 % Ti

Aluminum 1.85 % Al

Silicon 15.44 % Si

Hydrogen 0.14 % H

Oxygen 32.99 % O

Fluorine 7.83 % F

Empirical Formula:

Ca2.75Na0.25Ti0.75Al0.25Si2O7F1.5(OH)0.5

Environment:

Alkalic igneous rocks.

IMA Status:

Approved IMA 1960

Locality:

Nyiragongo crater, Mount Shaheru, Kivu Province, Zaire.

Name Origin:

Named for Gustav Adolf Von Gotzen (1866-1910), German traveler and first European to climb Mt. Shaheru, North Kivu, Zaire.

Physical Properties:

Cleavage:

[100] Perfect, [001] Good

Color:

colorless, very pale yellow, tan, or white.

Density:

3.138 - 3.2, Average = 3.16

Diaphaniety:

Transparent

Habits:

Tabular - Form dimensions are thin in one direction., Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Acicular - Occurs as needle-like crystals.

Hardness:

5.5-6 - Knife Blade-Orthoclase

Luster:

Vitreous - Greasy

Streak:

white

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .