Mindat Logo

Stephanite, Acanthite, Chlorargyrite, Quartz


Stephanite : Ag5SbS4, Acanthite : Ag2S, Chlorargyrite : AgCl, Quartz : SiO2
minID: 0J5-DN0

Photo Copyright © W.C. van Laer, 2009  - This image is copyrighted. Unauthorized reproduction prohibited.
Dimensions: 3.7 cm x 2.9 cm x 2.9 cm

Matrix specimen with stephanite, acanthite, and one small hemispherical mass of pale yellow chlorargyrite on martix of drusy quartz. This was collected off the dumps of the old Champion mine circa 1980. In the mid seventies, this mine was re-opened by the Anaconda Company and worked for its silver, but a mining engineering graduate of Montana Tech ran the operation and threw all the ore on to the dumps, and sent the gangue to the mill. The operation went bust, but for a few years you could pick up ore with these minerals (the chlorargyrite from here is previously unreported) including fine pyrargyrite crystals lying on the dumps in relative abundance. Later the dumps were removed and processed, so little good material remains. Ore sampled from here ran 290 ounces silver and 1.00 ounce gold per ton! Size of specimen: 3.7 x 2.9 x 2.9 cm.; self-collected.

This photo has been shown 522 times

Photo added: 1st Dec 2009

View User Page & Photos View Stephanite Gallery Create Talk Page Light Background

Mineral and/or Locality  
Search Google  
Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
Current server date and time: October 22, 2014 04:52:26
Mineral and Locality Search
Mineral:
and/or Locality:
Options
Fade toolbar when not in focusFix toolbar to bottom of page
Hide Social Media Links
Slideshow frame delay seconds