ML212
| 名稱: 斜方砷鐵礦/ 黄皮水晶 | Name: Loellingite/Quartz |
| 化學公式: FeAs2 | Formula: FeAs2 |
| 莫氏硬度: 5.0~5.5 | Mohs scale of Hardness: 5.0~5.5 |
| 描述: 晶体沿C轴延伸呈柱状或针状，并在柱面上有平行C轴的纵纹，也有双锥状，双晶沿的聚片双晶，但晶形极少见，常呈致密块状产出 | Description The crystals extend along the C axis in a columnar or needle-like shape, and there are longitudinal lines parallel to the C-axis on the cylindrical surface, and there are also double cones. |
| 小挑戰: 鐵的質量百分比是多少?27.18% | Challenge: what is the percentage by mass of iron? 27.18% |
References
https://baike.baidu.com/item/%E6%96%9C%E6%96%B9%E7%A0%B7%E9%93%81%E7%9F%BF