 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
|
|||||||||||||||||||||
 |
 |
 |
 |
 |
 |
 |
 |
 |
|
|||||||||||||
 |
 |
 |
 |
 |
 |
|
||||||||||||||||
 |
 |
 |
 |
|
||||||||||||||||||
 |
 |
 |
 |
|
||||||||||||||||||
 |
 |
 |
|
|||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|||||||||||||
|
|
|
|
|
|
|
||||||||||||||||
|
|
|
|
|
||||||||||||||||||
|
|
|
|
|
||||||||||||||||||
|
|
|
|
|||||||||||||||||||
Mn3+O(OH)
Monoclinic
Manganite, a manganese oxide hydroxide mineral, was first reported from Sterling Hill by Palache (1928a), but he subsequently (1935) gave a precise locality in the Franklin Mine for these manganite crystals in andradite. This is likely the first report of the then-unrecognized groutite assemblage. Most local specimens labeled manganite are in fact groutite. True manganite does occur rarely at Franklin, as microscopic crystals forming dark reddish brown velvety coatings in solution vugs in the more abundant of the groutite assemblages described herein. Preliminary analysis of this material indicates that SiO2, Sb2O5, Fe2O3, and ZnO are all present in amounts less than 1.0 wt. % and that Mg is absent. Manganite is a rare mineral locally.
 |
|
|||
|
|
||||
|
||||
| Copyright © 1995 by Pete J. Dunn |
Website
by Herb Yeates
|
|||
|
|
|
|||
|
Link
to homepage
|
||||
|
This
page created: January 11, 2001 |
||||
|
|
|
|||
