黑钨矿是一种常见的钨矿物,它广泛分布在热液石英脉型钨矿床中。晶形通常呈自形板状、短柱状或不规则粒状。 (湖南浏阳七宝山多金属矿床中产出一种特殊晶形黑钨矿,它呈假双锥状。)现介绍如下: 一、产状 (浅成侵入体侵入于中、上石炭统和元古代地层之中,受几组不同方向构造控制,矿体呈接触交代型和裂隙充填型产出。 Wolframite is a common tungsten mineral, which is widely distributed in hydrothermal quartz vein type tungsten deposits. Crystal shape is usually self-shaped plate, short columnar or irregular granular. (Liuyang, Hunan Qibao Mountain polymetallic deposits produce a special type of wolframite, which was false biconical.) Are introduced as follows: First, the occurrence (epithermal invasion of the Middle, Upper Carboniferous and Proterozoic Among the strata, controlled by several groups of different orientations, the ore bodies are in contact with confronting and fissure-filled outputs.