Ca2Al2SiO4Si2O7OOH

Ca2Al2SiO4Si2O7OOH is a mineral formula that has been proposed for a hydrated calcium aluminum silicate. The exact chemical composition and mineralogical status of this formula are not definitively established within mainstream mineralogy. It is important to note that this formula does not correspond to a widely recognized or officially named mineral in standard mineralogical databases.

The formula suggests a structure containing calcium (Ca), aluminum (Al), silicon (Si), oxygen (O), and hydroxyl (OH) groups. The presence of both SiO4 (orthosilicate) and Si2O7 (disilicate) units indicates a complex silicate framework. The hydroxyl group (OOH) signifies that the mineral is hydrated, meaning it contains water molecules within its crystal structure.

Minerals with similar chemical components, such as members of the melilite group (which can contain calcium, aluminum, and silicon) and various hydrated silicates, exist. However, without further crystallographic and chemical data, it is challenging to pinpoint the specific mineralogical context or potential occurrence of a compound represented by Ca2Al2SiO4Si2O7OOH. Further research and characterization would be necessary to confirm its existence as a distinct mineral species.