| 石门雄黄矿一号窿矿体构造及深部找矿研究 |
| 点此下载全文 |
| 引用本文：.1998.Orebody structure in No.1 gallery of the Shimen realgar deposit and ore prospecting at depth[J].Mineral Deposits,17(3):277~284 |
| Hits: 2021 |
| Download times: 1955 |
|
|
| 中文摘要:通过对湖南石门雄黄矿一号窿矿区构造研究，雄黄矿床赋存于燕山期形成的背斜核部，背斜与断裂、断裂与断裂的交汇部位。在多种手段综合研究的基础上，指出了矿区导矿构造为EW向的Fi、F3断裂，容矿构造为次级的NEE、NE、NW、SN『匈断裂构造；提出了本区中生代的三期主要构造应力场，其中SN向主压应力的构造应力场共轭角高值区为雄黄矿体富集地带。矿床受寒武系娄山关群白云岩、奥陶系灰岩和构造的双重控制。认为在一号窿主矿体NW、SW方向可能存在有隐伏矿体。 |
| 中文关键词:构造应力场, 控矿因素, 找矿方向, 石门雄黄矿 |
| |
| Orebody structure in No.1 gallery of the Shimen realgar deposit and ore prospecting at depth |
|
|
| Abstract:The Shim en ore deposit in Hunan Province is a large realgar deposit in China characterized by the largest proved reserves and the best quality. The ore deposit is located at the northward prominent position of the reversed "S" -shaped curved structural swells on the core of the EW-trending Huangchang anticline. The host rocks are oolitic dolomite and dolomitic limestone. Especially in dolomite there might occur large and rich realgar orebodies. Based on the study of the structure in the ore district and the orebody structure in the No.l gallery, this paper has described structural characteristics, orebody characteristics and genetic connection between the orebody and the structure in the No.1 gallery. It is shown that realgar orebodies occur in the axial parts of Yanshanian anticlines as well as intersections between anticlines and faults and between different faults. The paper has also revealed the spatial zoning of the ore-control structure and, in particular, the intrinsic connection between the vertical zoning of the structure and that of the orebody. The ve rtical zoning of the structure not only controls the form and vertical variation of the orebody but also decides variation regularity of mineralization and enrichment in depth. Based on in tegrated study with multiple means, the paper points out that the ore conduit structure in the ore district includes EW-trending F1 and F3, whereas the host structure consists of second-order NEE-, NE-, NW-, SN- striking faults. Three major stages of Mesozoic tectonic stress fields are indicated, and it is emphasized that the conjugate angle high value area of the tectonic stress field of the SN-striking principal com pressive stress is the concentration area of realger orebodies. The ore deposit is controlled jointly by dolomite of Cam brian Loushanguan Group, Ordovician limestone and structure. It is considered that in NW and SW directions of the principal ore-body of No.l Gallery there might exist concealed orebodies. |
| keywords:tectonic stress field, ore-control factor, ore-prospecting direction, Shimen realgar deposit |
| View Full Text View/Add Comment Download reader |
|
|
|
