EUGSTERITE


Meaning of EUGSTERITE in English

General Information:

Chemical Formula:

Na4Ca(SO4)3·2(H2O)

Composition:

(Molecular Weight = 456.26 gm)

Sodium 20.16 % Na

Calcium 8.78 % Ca

Hydrogen 0.88 % H

Sulfur 21.08 % S

Oxygen 49.09 % O

Empirical Formula:

Na4Ca(SO4)3·2(H2O)

Environment:

Surface efflorescences on soils.

IMA Status:

Approved IMA 1980

Locality:

Sindo and Luanda, near Lake Victoria, Kenya.

Name Origin:

Named for Hans P. Eugster (1925-1987), Suiss-American mineralogist, John Hopkins University, awarded the Roebling Medal, 1983.

Physical Properties:

Color:

colorless.

Density:

2.5

Diaphaniety:

Transparent

Habits:

Efflorescences - Crystals covering matrix, generally produced from transpiro-evaporation., ,

Hardness:

1-2 - Between Talc and Gypsum

Luster:

Vitreous (Glassy)

Streak:

white

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .