Ni-Co-As-Bi minerals in the Silius vein system, (SE Sardinia, Italy): The polymetallic evolution of a word-class fluorspar deposit

被引：0

作者：

Scano, Ignazio ^{[1
]}

Attardi, Antonio ^{[1
]}

Cocco, Fabrizio ^{[1
]}

Fancello, Dario ^{[1
]}

Murroni, Alessandro ^{[2
]}

Zara, Francesca ^{[1
]}

Naitza, Stefano ^{[1
]}

机构：

[1] Univ Cagliari, Dipartimento Sci Chim & Geol, Monserrato, Italy

[2] Mineraria Gerrei Srl, Silius, Italy

来源：

17TH BIENNIAL SGA MEETING, 2023, VOL 3 | 2023年

关键词：

ORE-DEPOSITS; HYDROTHERMAL ACTIVITY; MINERALIZATION;

D O I：

暂无

中图分类号：

P5 [地质学];

学科分类号：

0709 ; 081803 ;

摘要：

The world-class Silius deposit (NE Sardinia, Italy), exploited for decades, represents a huge ENE-WSW to NE-SW directed vein system, characterized by abundant fluorite, minor barite, and Pb-(Zn-Cu-Fe) sulphides in quartz-carbonate gangue. This deposit shows many similarities to other European unconformity-related F-Ba districts linked to the regional-scale event of the breakup of Pangea, such as ore textures, low-temperature high-salinity fluids, and observed mineral assemblages. Besides fluorite, the mineralogy includes other critical raw materials (CRM) such as disseminated tiny LREE minerals and intergrowths of Ni-Co-Fe arsenides-sulpharsenides such as nickeline (NiAs), rammelsbergite (NiAs2), gersdorffite (NiAsS), cobaltite (CoAsS) and arsenopyrite (FeAsS). Ni-Co assemblages, which were recently discovered in this deposit, were investigated by optical microscopy and SEM-EDS.

引用

页码：96 / 99

页数：4