Meaning of ALLEGHANYITE in English

ALLEGHANYITE

General Information:

Chemical Formula:

Mn5(SiO4)2(OH)2

Composition:

(Molecular Weight = 492.87 gm)

Manganese 55.73 % Mn

Silicon 11.40 % Si

Hydrogen 0.41 % H

Oxygen 32.46 % O

Empirical Formula:

Mn2+5(SiO4)2(OH)2

Environment:

Manganese vein deposits.

Locality:

TL: Bald Knob, Alleghany Co., North Carolina, USA.

Name Origin:

Named after its locality.

Physical Properties:

Cleavage:

None

Color:

white, brown, bright pink, or grayish pink.

Density:

4

Diaphaniety:

Transparent to Subtransparent to translucent

Habits:

Massive - Lamellar - Distinctly foliated fine-grained forms., Granular - Generally occurs as anhedral to subhedral crystals in matrix.,

Hardness:

6-5

Luminescence:

Non-fluorescent.

Luster:

Vitreous (Glassy)

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .