Notes on the Santa Eulalia Mining District, Chihuahua, Mexico PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Notes on the Santa Eulalia Mining District, Chihuahua, Mexico PDF full book. Access full book title Notes on the Santa Eulalia Mining District, Chihuahua, Mexico by Philip Argall. Download full books in PDF and EPUB format.
Author: Philip Argall
Publisher:
ISBN:
Category : Mines and mineral resources
Languages : en
Pages : 126
Get Book Here
Book Description
Author: Philip Argall
Publisher:
ISBN:
Category : Mines and mineral resources
Languages : en
Pages : 126
Get Book Here
Book Description
Author: Peter K. M. Megaw
Publisher:
ISBN:
Category : Geochemistry
Languages : en
Pages : 922
Get Book Here
Book Description
Santa Eulalia contains two separate, contrasting Pb-Zn-Ag deposits. The East Camp consists of a symmetrically zoned calc-silicate skarn with distal sulfide and tin-bearing orebodies; whereas the west Camp is composed of massive sulfide orebodies with minor proximal calc-silicate skarn and isolated intermediate calcic-iron skarns. Mineralization and alteration are zoned within each camp but do not overlap. Sulfide mineralization in both camps consists of pyrrhotite, sphalerite, galena, and pyrite with lesser amounts of arsenopyrite and chalcopyrite. The East Camp is apparently richer in zinc and copper than the West camp. Mineralization is temporally and spatially related to geochemically identical felsite intrusions which apparently have a common source. Mineralizing fluids followed these felsites through a thick section of evaporites and organic-rich shaly limestones into clean, homogeneous, relatively undeformed, limestone hosts. West Camp mineralization occurs along an interconnected network of vertically discontinuous tight fissures and sill contacts, whereas East Camp mineralization is located along vertically throughgoing faults and dike contacts. strata-bound, but not stratiform, mantos extend off discordant chimneys in both camps. Ore textures reveal that mineralization occurred primarily by limestone replacement. 21 Pressure-corrected primary fluid inclusion homogenization temperatures in fluorite range from 220 to 490 deg. C. Salinities are bimodal with high-salinity (>26.3 equivalent wt% NaCl) and low-salinity (1-12 equivalent wt% NaCl) populations. Mineralogical constraints indicate that the hydrothermal fluids were acid and reduced. Sulfur isotope analyses indicate that the ore fluids varied from -17 to +4 permil without correlation to iron-sulfide species, temperature, or salinity. Co-existing sulfides are commonly in isotopic disequilibrium. Sulfur isotopes from the West Camp are crudely zoned, but no consistent patterns exist in the East Camp. Oxygen and carbon isotope analyses of limestone wallrocks reveal a distinct isotopic alteration halo. A single analysis of gangue calcite from each camp indicates that the ore fluids contained non-carbonate-derived carbon and oxygen, possibly of magmatic origin. Metals were apparently transported as chloride complexes and deposited through coupled dissolution-precipitation replacement reactions. Most ore sulfur apparently came from diagenetic pyrite and sedimentary anhydrite, but some of the sulfur may have had a magmatic source. The metals probably came from the felsite parent magma and this magma may have also contributed fluids. Close similarities between Santa Eulalia and numerous other intrusion-related carbonate-hosted deposits in northern Mexico reinforce these interpretations.
Author: Timothy George Walter
Publisher:
ISBN:
Category : Mines and mineral resources
Languages : en
Pages : 204
Get Book Here
Book Description
Author: John Drew Ridge
Publisher: Geological Society of America
ISBN: 0813711312
Category : Ore deposits
Languages : en
Pages : 706
Get Book Here
Book Description
Author: William Paxton Hewitt
Publisher:
ISBN:
Category : Mining geology
Languages : en
Pages : 208
Get Book Here
Book Description
Author: William Paxton Hewitt
Publisher:
ISBN:
Category :
Languages : en
Pages : 32
Get Book Here
Book Description
Author: Wm Adams
Publisher: Forgotten Books
ISBN: 9780365257424
Category : Science
Languages : en
Pages : 60
Get Book Here
Book Description
Excerpt from General Report on the Santa Eulalia Mining District and the Old Spanish Mines of the Fresno Ranch Brief Notes Concerning Past History, Present Condi tions and Future Prospects of the Mines sof Santa Eulalia. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
Author: Phillip Lance Hadley
Publisher:
ISBN:
Category : Aquiles Serdán (Mexico)
Languages : en
Pages : 730
Get Book Here
Book Description
Author: Raoul Gustin Bergman
Publisher:
ISBN:
Category :
Languages : en
Pages : 448
Get Book Here
Book Description
Author: Basil Prescott
Publisher:
ISBN:
Category : Mines and mineral resources
Languages : en
Pages : 198
Get Book Here
Book Description
