摘要
凤凰山锰银氧化矿石的锰矿物主要为隐钾锰矿,少量软锰矿和锰铅矿。银的赋存形式较为复杂,但大致可分为3种:①呈微细粒的角银矿、自然银、硫铜银矿和辉银矿等独立银矿物;②呈类质同像赋存于隐钾锰矿中;③呈微粒矿物包体分布于隐钾锰矿或褐铁矿集合体的微裂隙中。银的3种赋存形式的分配比例与矿石中隐钾锰矿的含量有关。软锰矿和锰铅矿基本不含银。
It was found that the manganese minerals in the ores are mostly cryptomelane, and a little pyrolusite and plumbopsilomelane. Silver facieses of the ores could be classified into three forms: ① micrograined cerargyrite, native silver and argentite, ② isomorphic mixture in cryptomelane, ③ micro mineral inclusions distributed in the microcracks of manganese oxide minerals and limonite. The distributing proportion of these three forms relates to the content of cryptomelane in the ores. Pyrolusite and plumbopsilomelane contain little silver.
出处
《中国锰业》
2003年第3期9-13,共5页
China Manganese Industry
基金
中国地质调查局地质调查项目(200120190103)