In:
Resource Geology, Wiley, Vol. 65, No. 1 ( 2015-01), p. 1-12
Abstract:
The mineralogy of the E arly C ambrian N i– M o polymetallic black shale ores at the S ancha deposit, S outh C hina, was investigated to better the understanding of the complex ore genesis by optical microscope, electron microprobe, and scanning electron microscope. Analytical results show that the sulfides in the ore bed mainly comprise C / MoS 2 mixed‐layer phase ( MoSC ), millerite, and pyrite. Of these, MoSC and millerite are the main ore minerals of M o and N i, respectively. Pyrite is subdivided into six types based on its morphology, occurrence, relationship to N i‐ and M o‐bearing minerals, and chemical composition. Many millerite crystals cut early‐formed MoSC , implying that these two minerals formed at different stages. The concentrations of biogenic elements (e.g., S b) in the MoSC are high compared with those in millerite, implying a close relationship between MoSC and organic matter. These data provide a new and improved understanding of the complex ore genesis at the Sancha deposit, and can be applied to other black‐shale‐hosted mineral deposits worldwide.
Type of Medium:
Online Resource
ISSN:
1344-1698
,
1751-3928
DOI:
10.1111/rge.2015.65.issue-1
Language:
English
Publisher:
Wiley
Publication Date:
2015
detail.hit.zdb_id:
2279954-0
SSG:
13