Meaning of AGRELLITE in English

AGRELLITE

General Information:

Chemical Formula:

NaCa2Si4O10F

Composition:

(Molecular Weight = 394.48 gm)

Sodium 5.83 % Na

Calcium 20.32 % Ca

Silicon 28.48 % Si

Oxygen 40.56 % O

Fluorine 4.82 % F

Empirical Formula:

NaCa2(Si4O10)F

Environment:

Alkalic igneous rocks of the Sheffield Lake complex.

IMA Status:

Approved IMA 1973

Locality:

Kipawa River, Villieu Township, Temiscaming County, Quebec, Canada.

Name Origin:

Named for Stuart O. Agrell, British mineralogist, Cambridge University.

Physical Properties:

Cleavage:

[110] Perfect, [110] Perfect, [010] Poor

Color:

white, grayish white, or greenish white.

Density:

2.88 - 2.9, Average = 2.88

Diaphaniety:

Translucent

Habits:

Lath - Shaped like a small, thin plaster lath, tabular (rectangular) in shape., ,

Hardness:

5.5 - Knife Blade

Luminescence:

Fluorescent.

Luster:

Vitreous - Pearly

Streak:

white

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .