Jennite
（重定向自Jenite）
![](/Images/godic/202501/21/Jennite_CSH_3D_Crystal_Structure_RasMol0732.gif")
Jennite is a calcium silicate hydrate mineral of general chemical formula: Ca9Si6O18(OH)6·8H2O.
Jennite occurs as an alteration mineral in metamorphosed limestone and skarn. It typically occurs as vein and open space fillings as a late mineral phase. It also occurs in hydrated cement paste.