SWINEFORDITE


Meaning of SWINEFORDITE in English

General Information:

Chemical Formula:

(Li,Ca0.5,Na)0.72(LI,Al,Mg)2.66(Si,Al)4O10(OH,F)2·2(H2O)

Composition:

(Molecular Weight = 397.20 gm)

Sodium 0.58 % Na

Lithium 1.75 % Li

Calcium 5.05 % Ca

Magnesium 3.06 % Mg

Aluminum 10.19 % Al

Silicon 21.21 % Si

Hydrogen 1.40 % H

Oxygen 54.38 % O

Fluorine 2.39 % F

Empirical Formula:

LiCa0.5Na0.1Al1.5Mg0.5Si3O10(OH)1.5F0.5·2(H2O)

IMA Status:

Approved IMA 1975

Locality:

Foote Quarry, Kings Mountain, Cleveland County, North Carolina, USA.

Name Origin:

Named for Ada Swineford (1917-1993), clay mineralogist and professor of geology at Western Washington State College, Bellingham, Washinton, USA.

Physical Properties:

Cleavage:

[001] Perfect

Color:

greenish gray or light olive green.

Density:

2.3 - 2.8, Average = 2.54

Diaphaniety:

Translucent to Opaque

Habits:

Aggregates - Made of numerous individual crystals or clusters., ,

Hardness:

1 - Talc

Luster:

Earthy (Dull)

Streak:

white

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .