Some authors require the material to be a stable or metastable solid at room temperature (25 °C). However, the IMA only requires that the substance be stable enough for its structure and composition to be well-determined. For example, it recognizes meridianiite (a naturally occurring hydrate of magnesium sulfate) as a mineral, even though it is formed and stable only below 2 °C.
some authors require the material to be a stable or metastable solid at room temperature (25 °c) however the ima only requires that the substance be stable enough for its structure and composition to be well-determined for example it recognizes meridianiite (a naturally occurring hydrate of magnesium sulfate) as a mineral even though it is formed and stable only below 2 °c