ANDALUSITE


Meaning of ANDALUSITE in English

General Information:

Chemical Formula:

Al2SiO5 = Al[6]Al[5]OSiO4

Composition:

(Molecular Weight = 162.05 gm)

Aluminum 33.30 % Al

Silicon 17.33 % Si

Oxygen 49.37 % O

Empirical Formula:

Al2SiO5

Environment:

Metamorphosed peri-aluminous sedimentary rocks.

Locality:

Andalucia (Spain), an early but now unimportant location.

Name Origin:

Named after its locality.

Physical Properties:

Cleavage:

[110] Distinct, [100] Indistinct, [010] Poor

Color:

dark green, gray, brown, red, or green.

Density:

3.13 - 3.17, Average = 3.15

Diaphaniety:

Transparent to translucent

Habits:

Blocky - Crystal shape tends to be equant (e.g. feldspars)., Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline)., Euhedral Crystals - Occurs as well-formed crystals sho wing good external form.

Hardness:

6.5-7 - Pyrite-Quartz

Luminescence:

None.

Luster:

Vitreous (Glassy)

Streak:

white

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .