摘要
铁白云石是八卦庙超大型金矿床的主要脉石矿物，与金的矿化关系十分密切。根据其产状可分为浸染状、斑，支状和脉状等三种类型。它们在化学成分、碳氧同位素、包裹体特征等方面有许多相似之处，而在矿物共生组合、矿物形态特征上又有一定的差别。不同类型的铁白云石都是热液作用的产物，它们在金的运移、沉淀等方面起重要作用。铁白云石包裹体的温度ｔ／Ｃ为２４５－２９０，为八卦庙金矿是中温热液矿床提供了证据。
Ankerite is one of the main gangue minerals genetically related to gold mineralization in the Baguamiao giant gold deposit.According to its occurrences,Ankerite can be classified intothree types:disseminated ,spotted and vein. These types of ankerite have some similarities in theirchemical composition,carbon and oxygen isotopes,and some difference in their mineral assem-blages and shapes. They are products of hydrothermal solution extraced from deep-seated sourcesreacting with wall-rocks. Ankerite with formation temperature of 245℃-290℃ plays an impor-tant role in the transportation,deposition of gold.
出处
《矿物岩石》
CAS
CSCD
1995年第3期32-36,共5页
Mineralogy and Petrology
关键词
金矿床
铁
白云石
成因
an kerite ,Baguamiao gold depcoit
