礦物亞種
Mineral subspecies.
赤鐵礦的集合體有各種形態(tài)，形成一些礦物亞種，即:
The aggregation of hematite has various forms, forming some mineral subspecies:
(1)鏡鐵礦 為具金屬光澤的玫瑰花狀或片狀赤鐵礦的集合體。
(1) in the form of a rose like or sheet of hematite with a metallic luster.
(2)云母赤鐵礦 具金屬光澤的晶質(zhì)細鱗狀赤鐵礦。
(2) mica hematite with metal luster crystal fine scaly hematite.
(3)鮞狀或腎狀赤鐵礦 形態(tài)呈鮞狀或腎狀的赤鐵礦。
(3) oolitic hematite or reniform shape or kidney shaped oolitic hematite.
赤鐵礦是自然界中分布很廣的鐵礦物之一，可形成于各種地質(zhì)作用，但以熱液作用、沉積作用和區(qū)域變質(zhì)作用為主。在氧化帶里，赤鐵礦可由褐鐵礦或纖鐵礦、針鐵礦經(jīng)脫水作用形成。但也可以變成針鐵礦和水赤鐵礦等。在還原條件下，赤鐵礦可轉(zhuǎn)變?yōu)榇盆F礦，稱假象磁鐵礦。
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. |
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