EPSOMITE


Meaning of EPSOMITE in English

General Information:

Chemical Formula:

MgSO4·7(H2O)

Composition:

(Molecular Weight = 246.48 gm)

Magnesium 9.86 % Mg

Hydrogen 5.73 % H

Sulfur 13.01 % S

Oxygen 71.40 % O

Empirical Formula:

Mg(SO4)·7(H2O)

Environment:

White efflorescence on cave walls, volcanic exhalations, or deposited by Mg sulfate spring waters.

Locality:

Lake-bed deposits on Kruger Mountain, Oregon.

Name Origin:

The mineral has long been known from the deposits associated with the mineral waters at Epsom, Surrey, England.

Physical Properties:

Cleavage:

[010] Perfect, [101] Distinct

Color:

colorless, white, yellowish white, greenish white, or pinkish white.

Density:

1.67 - 1.68, Average = 1.67

Diaphaniety:

Transparent to translucent

Habits:

Fibrous - Crystals made up of fibers., Acicular - Occurs as needle-like crystals., Encrustations - Forms crust-like aggregates on matrix.

Hardness:

2-2.5 - Gypsum-Finger Nail

Luminescence:

None.

Luster:

Vitreous (Glassy)

Streak:

white

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .