Under these conditions, new minerals like biotite, diopside and scapolite grew. Meionite is a tectosilicate belonging to the scapolite group with the formula CaAlSiOCO. The variety of scapolite known as wernerite is named in his honour. The scapolite limestones and contact metamorphic rocks. The names couzeranite and dipyre are often given to this kind of scapolite. Nepheline is very abundant and there is also cancrinite, sodalite, scapolite, calcite, biotite and hornblende. Subsequently the chlorides were absorbed, and the feldspar was transformed into scapolite. Scapolite and wernerite are far more common at the contacts of limestone with intrusive masses. According to their genesis the scapolite rocks fall naturally into four groups. Scapolite rocks from Alaska&colon; American Journal of Science, 4th ser.