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赤铁矿物理性质
Physical properties of hematite
钢灰色至铁黑色,常带淡蓝锖色;隐晶质或粉末状者呈暗红至鲜红色。具特征的樱桃红或红棕色条痕。金属光泽至半金属光泽,有时光泽暗淡。无解理。因双晶可具和裂开。硬度5~6。相对密度5.0~5.3。偏光镜下:血红、橙黄、灰黄色。一轴晶(-),No=2.988,Ne=2.759。
Steel gray to black iron, often with a light blue tarnish; aphanitic or powder were dark red to bright red. Characteristics of cherry red or reddish brown streak. Metallic luster to the semi metallic luster, sometimes dim. No cleavage. Because the twin with and cleave. The hardness of 5~6. The relative density of 5.0~5.3. Under a polarized light microscope: blood red, orange, yellow. A uniaxial (-), No=2.988, Ne=2.759.
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