GRAFTONITE


Meaning of GRAFTONITE in English

General Information:

Chemical Formula:

(Fe++,Mn,Ca)3(PO4)2

Composition:

(Molecular Weight = 351.93 gm)

Calcium 3.42 % Ca

Manganese 14.05 % Mn

Iron 28.56 % Fe

Phosphorus 17.60 % P

Oxygen 36.37 % O

Empirical Formula:

Fe2+1.8Mn2+0.9Ca0.3(PO4)2

Name Origin:

Named after its locality at Grafton, New Hampshire, USA.

Physical Properties:

Cleavage:

[010] Perfect

Color:

brown, pink, dark brown, or reddish brown.

Density:

3.67 - 3.7, Average = 3.68

Diaphaniety:

Translucent

Habits:

Massive - Granular - Common texture observed in granite and other igneous rock., Lamellar - Thin laminae producing a lamellar structure.,

Hardness:

5 - Apatite

Luminescence:

None.

Luster:

Vitreous - Greasy

Streak:

pale pink

More details...

Mineralogy database English vocab.      Английский словарь базы данных минералогии .