پترولوژي لمپروفيرهاي جنوب شرق انارك (استان اصفهان)

Petrology of lamprophyres in Southeast of Anarak (Isfahan Province}

albite), K-feldspar (sanidine), Cr-Ti spinel, ilmenite, apatite with low amount magnetite, chlorite, pumpellyite, epidote, sphene, leucoxene and calcite. Textures of pillow lavas are microlitic and variolitic, and textures of stocks are porphyritic and intersertal. The cavities are filled by calcite. These rocks are enciched in alkalis, Ti02 and LREE, and the Si02 content ranges from 40 to 52 weight percent. In classification of lamprophyres, these rocks are alkaline lamprophyres and tectonically are formed in intra-continental plate setting.