HAUYNE


Meaning of HAUYNE in English

General Information:

Chemical Formula:

(Na,Ca)4-8Al6Si6(O,S)24(SO4,Cl)1-2

Composition:

(Molecular Weight = 1,032.43 gm)

Sodium 8.91 % Na

Calcium 7.76 % Ca

Aluminum 15.68 % Al

Silicon 16.32 % Si

Sulfur 9.32 % S

Chlorine 1.72 % Cl

Oxygen 40.29 % O

Empirical Formula:

Na4Ca2Al6Si6O22S2(SO4)Cl0.5

Environment:

Igneous rocks low in silica and rich in alkalies.

Locality:

Vesuvian lavas, on Mte Somma, Italy.

Name Origin:

Named after the French crystallographer, R. J. Hauy (1743-1822).

Physical Properties:

Cleavage:

[110] Perfect, [011] Perfect, [101] Perfect

Color:

blue, green, red, yellow, or gray.

Density:

2.4 - 2.5, Average = 2.45

Diaphaniety:

Subtransparent to translucent

Habits:

Crystalline - Coarse - Occurs as well-formed coarse sized crystals., Twinning Common - Crystals are usually twinned., Euhedral Crystals - Occurs as well-formed crystals showing good e xternal form.

Hardness:

5-6 - Between Apatite and Orthoclase

Luminescence:

None.

Luster:

Vitreous - Greasy

Streak:

bluish white

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .