PLAGIONITE


Meaning of PLAGIONITE in English

General Information:

Chemical Formula:

Pb5Sb8S17

Composition:

(Molecular Weight = 2,555.12 gm)

Antimony 38.12 % Sb

Lead 40.55 % Pb

Sulfur 21.33 % S

Empirical Formula:

Pb5Sb8S17

Locality:

Wolfsberg, Hartz Mountains.

Name Origin:

From the Greek, plagios meaning "oblique."

Physical Properties:

Cleavage:

[112] Perfect

Color:

black or gray black.

Density:

5.4 - 5.6, Average = 5.5

Diaphaniety:

Opaque

Habits:

Tabular - Form dimensions are thin in one direction., Botryoidal - "Grape-like" rounded forms (e.g.. malachite)., Massive - Granular - Common texture observed in granite and other ign eous rock.

Hardness:

2.5 - Finger Nail

Luster:

Metallic

Streak:

reddish gray black

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .