poikiloblastic

poikiloblastic

[pȯi¦kil·ə¦blas·tik]
(petrology)
Of a metamorphic texture, simulating the poikilitic texture of igneous rocks in having small idioblasts of one constituent lying within larger xenoblasts. Also known as sieve texture.
References in periodicals archive ?
The hornblende is poikiloblastic and crystals are lineated parallel to the rock foliation.
Biotite gneiss with lepidogranoblastic or poikiloblastic texture and non-laminated crystalline structure consists of feldspar (47%), quartz (35%) and biotite (13%), the rest being accessories.
The poikiloblastic texture is defined by the inclusion of epidote minerals, titanite, muscovite, hornblende and garnet in the plagioclase (Figure 3g).