Graniteberg Complex; GM340 = bostonite, Graniteberg Complex; PM156 = bontonite, Pomona Complex; DM111 =...= quartz feldspar porphyry, Drachenberg Complex. Silica-undersaturated alkaline rocks: PM53 = nepheline...nepheline syenite, Pomona Complex; GM160 = tinguaite, Graniteberg Complex; GM171, GM142, GM136 = nepheline syenites...syenites, Graniteberg Complex. 155 ment. Differences between crystallization conditions in these and...minerals (loparite, lavenite, pyrochlore, apatite, arfvedsonite, eudialyte-eucolite solid solution rinkolite |