 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
 |
|
|||||||||||||||||||||
 |
 |
 |
 |
 |
 |
 |
 |
 |
|
|||||||||||||
 |
 |
 |
 |
 |
 |
|
||||||||||||||||
 |
 |
 |
 |
|
||||||||||||||||||
 |
 |
 |
 |
|
||||||||||||||||||
 |
 |
 |
|
|||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|||||||||||||
|
|
|
|
|
|
|
||||||||||||||||
|
|
|
|
|
||||||||||||||||||
|
|
|
|
|
||||||||||||||||||
|
|
|
|
|||||||||||||||||||
Mg9(SiO4)4(OH)2
Monoclinic
Clinohumite, a magnesium silicate hydroxide mineral of the humite group, has not been found in the local marble quarries. The known occurrence of this species is in the orebody at Sterling Hill (Dunn, 1985a) where it occurs as massive brown aggregates, veins, and disseminated blebs, associated with zincite, franklinite, willemite, and abundant calcite. Some crystals have reaction rims of willemite. A representative analysis is given in Table 1. Another occurrence was reported by Reilly (1983) who described it from Sterling Hill drill-hole #124, at 69 feet (21 meters) from its beginning on the 340 level. This material was associated with dolomite and altered to white chlorite; microprobe analysis showed it was of near end-member composition.
 |
|
|||
|
|
||||
|
||||
| Copyright © 1995 by Pete J. Dunn |
Website
by Herb Yeates
|
|||
|
|
|
|||
|
Link
to homepage
|
||||
|
This
page created: January 11, 2001 |
||||
|
|
|
|||
