GEOLOGY, LITHOLOGIC ASSOCIATION, AND DEPOSITIONAL ENVIRONMENT OF THE OPOSURA MASSIVE SULFIDE DEPOSIT, SONORA, MEXICO

被引:0
|
作者
MARRS, CD [1 ]
机构
[1] ANACONDA MINERALS CO,ANCHORAGE,AK 99701
关键词
Geology - LEAD DEPOSITS - Mexico - MANGANESE DEPOSITS - Mexico - Petrology;
D O I
10.1016/0375-6742(86)90053-1
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
The Oposura massive sulfide deposit is located in the Sierra La Huerta, approximately 150 km east of Hermosillo, Sonora. Stratabound and stratiform lenses of massive and thinly bedded sulfides vary in thickness from several centimeters to 3. 5 meters. Field and laboratory examinations identified four types of mineralization. The most common type consists of beds of fine-grained sphalerite and galena hosted by fine crystal tuff. It is associated with chlorite, epidote, and important amounts of manganese, either as rhodonite or rhodochrosite. The mineralization is interpreted to have formed syngenetically with deposition of crystal tuffs and limestone in a shallow subaqueous volcano-sedimentary environment.
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页码:255 / 255
页数:1
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