 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
|
|||||||||||||||||||||
 |
 |
 |
 |
 |
 |
 |
 |
 |
|
|||||||||||||
 |
 |
 |
 |
 |
 |
|
||||||||||||||||
 |
 |
 |
 |
|
||||||||||||||||||
 |
 |
 |
 |
|
||||||||||||||||||
 |
 |
 |
|
|||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|||||||||||||
|
|
|
|
|
|
|
||||||||||||||||
|
|
|
|
|
||||||||||||||||||
|
|
|
|
|
||||||||||||||||||
|
|
|
|
|||||||||||||||||||
Mg7(SiO4)3(OH,F)2
Orthorhombic
Humite, a magnesium silicate hydroxide mineral of the humite group, has not been studied from the local marble quarries. It has been reported (Dunn, 1985a) as highly manganoan and zincian material from the orebodies at both Franklin and Sterling Hill. A representative analysis is given in Table 1. At Franklin, manganoan humite occurs as brown blebby crystals with much calcite and minor franklinite, willemite, and zincite. At Sterling Hill, manganoan humite is brown and associated with franklinite, calcite, and minor willemite. Humite has been observed as a reaction rim on apparent tephroite (Dunn, 1985a), and it coexists with chondrodite, but no studies have been made of the possible partitioning of cations between these species. The humite reported by Palache (1910) may have been norbergite or chondrodite.
 |
|
|||
|
|
||||
|
||||
| Copyright © 1995 by Pete J. Dunn |
Website
by Herb Yeates
|
|||
|
|
|
|||
|
Link
to homepage
|
||||
|
This
page created: January 11, 2001 |
||||
|
|
|
|||
