MURMANITE


Meaning of MURMANITE in English

General Information:

Chemical Formula:

Na3(Ti,Nb)4(Si2O7)2O4·4(H2O)

Composition:

(Molecular Weight = 750.89 gm)

Sodium 9.18 % Na

Titanium 22.96 % Ti

Niobium 4.95 % Nb

Silicon 14.96 % Si

Hydrogen 1.07 % H

Oxygen 46.88 % O

Empirical Formula:

Na3Ti3.6Nb0.4(Si2O7)2O4·4(H2O)

Environment:

Supergene alteration product of lomonsovite.

Locality:

Lu Javr and Hibina districts, Lovozero Massif, Murmansk, Kola peninsula, Russia.

Name Origin:

Named apparently for the locality.

Physical Properties:

Cleavage:

[001] Perfect

Color:

pink, bright pink, silvery, yellow, or brown.

Density:

2.64 - 2.84, Average = 2.74

Diaphaniety:

Transparent to translucent to opaque

Habits:

Tabular - Form dimensions are thin in one direction., Massive - Uniformly indistinguishable crystals forming large masses.,

Hardness:

2.5-3 - Finger Nail-Calcite

Luster:

Vitreous - Greasy

Streak:

white

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .