No, marble is not foliated. Foliation is a term used to describe the repetitive layering in metamorphic rocks, which typically occurs under significant pressure and temperature conditions, leading to the alignment of minerals in a layered or banded appearance.
Marble, on the other hand, is a metamorphic rock that forms from the recrystallization of limestone or dolostone. In the case of marble, the minerals present, mainly calcite or dolomite, recrystallize into a more interlocking crystalline structure without exhibiting the distinct layers characteristic of foliated rocks.
This lack of foliation in marble gives it a uniform and often elegant appearance, which is why it is widely used in sculpture and architecture.