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Geological characteristics of lamprophyre and its prospecting significance of the Beiya gold deposit,Yunnan
Author(s): 
Pages: 20-23
Year: Issue:  1
Journal: GOLD GEOLOGY

Keyword:  金矿煌斑岩找矿意义云南;
Abstract: 北衙金矿区广泛发育煌斑岩脉,规模较大的主要有7条,呈近EW向分布.形态较复杂,分支复合、膨胀收缩现象明显,并具有等距性分布的特点.厚度变化大,常交切矿体(脉),为成矿期脉岩.区内金矿体的产出主要与斑岩体及煌斑岩脉有关,与煌斑岩脉具有平行、包容和交切3种情况,以交切关系为主;在成因上煌斑岩为金矿成矿提供了部分成矿物质、热能及富集场所.煌斑岩不仅控制了矿区工业矿体的总体分布,而且控制了金矿体的产状及规模,是重要的找矿标志.
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