矿物亚种

Mineral subspecies.

赤铁矿的集合体有各种形态，形成一些矿物亚种，即:

The aggregation of hematite has various forms, forming some mineral subspecies:

(1)镜铁矿 为具金属光泽的玫瑰花状或片状赤铁矿的集合体。

(1) in the form of a rose like or sheet of hematite with a metallic luster.

(2)云母赤铁矿 具金属光泽的晶质细鳞状赤铁矿。

(2) mica hematite with metal luster crystal fine scaly hematite.

(3)鲕状或肾状赤铁矿 形态呈鲕状或肾状的赤铁矿。

(3) oolitic hematite or reniform shape or kidney shaped oolitic hematite.

赤铁矿是自然界中分布很广的铁矿物之一，可形成于各种地质作用，但以热液作用、沉积作用和区域变质作用为主。在氧化带里，赤铁矿可由褐铁矿或纤铁矿、针铁矿经脱水作用形成。但也可以变成针铁矿和水赤铁矿等。在还原条件下，赤铁矿可转变为磁铁矿，称假象磁铁矿。

Hematite is one of the most widely distributed iron minerals in nature, but it can be formed in various geological processes, but it is mainly based on hydrothermal, sedimentation and regional metamorphism. In the oxidation zone, hematite limonite can be formed or lepidocrocite, goethite by dehydration. But also can be turned into goethite and hematite water etc.. Under reducing conditions, can be transformed into magnetite hematite, called mushketovite.