Babylon NG
Simply the best definition!

Download it's free

Allactite

Wikipedia English The Free Encyclopedia

Download this dictionary
Allactite
Allactite is a rare arsenate mineral of metamorphosed manganese zinc ore deposits. It is found in Sweden and New Jersey, USA. Its name originated from Greek αλλάκτειν (allaktein) meaning "to change", referring to the strong pleochroism of the mineral.

See more at Wikipedia.org...


© This article uses material from Wikipedia® and is licensed under the GNU Free Documentation License and under the Creative Commons Attribution-ShareAlike License

Mineralogy Database Dictionary

Download this dictionary
Allactite

General Information:
 Chemical Formula:
Mn7(AsO4)2(OH)8
 Composition:
(Molecular Weight = 798.46 gm)
Manganese 48.16 % Mn
Arsenic 18.77 % As
Hydrogen 1.01 % 
Oxygen 32.06 % 
 Empirical Formula:
Mn2+7(AsO4)2(OH)8
 IMA Status:
Accepted IMA 1973
 Locality:
TL: Sweden, Nordmark, Moss mn
Physical Properties:
 Cleavage:
[???] Good
 Color:
brown red, greenish brown, purple red, or pink.
 Density:
3.83
 Diaphaniety:
Translucent
 Hardness:
4.5 - Between Fluorite and Apatite
 Luster:
Vitreous - Greasy
More details...


| Allactite in French | Allactite in Italian | Allactite in Portuguese | Allactite in Greek | Allactite in Farsi