calcite

His team analysed mud samples from Lough Monreagh in Ireland and discovered layers of white sediment made up of calcite crystals from algae..他的团队分析了爱尔兰洛蒙雷阿湖泥浆样本，发现了由海藻中方解石晶体构成的白色沉淀物涡旋层。

We then used a quartz calcite, which has an effect on light that depends on the direction the light is propagating, to measure the direction as a function of position..然后，我们用石英方解石测量作为位置函数的方向，石英方解石对光的影响这取决于光线的传播方向。

The protein converts calcium carbonate into calcite crystals which makes up the egg shell, creating six grammes of shell every 24 hours..这种蛋白将碳酸钙转换为构成蛋壳的方解石晶体，每24小时生成6克蛋壳。