aragonite

[矿]霰石, 文石英释中释na generally white or grey mineral, found in sedimentary rocks and as deposits from hot springs. Composition: calcium carbonate. Formula: CaCO3. Crystal structure: orthorhombic

1 So will corals, especially those whose skeletons are composed of aragonite, a particularly unstable form of calcium carbonate..珊瑚礁对此也受到同样的危险，对于骨骼由霰石（极不稳定的碳酸钙）构成的珊瑚来说，情况更是如此。

2 One indicator is the levels of calcium and aragonite..其中一个就是水体中的钙和霰石的水平。