Here's why:

* Crystalline Texture: This refers to the arrangement of minerals within a rock. In this case, the minerals have a distinct, geometric shape and arrangement, which can be observed as crystals.

* Other Textures: Rocks can also have other textures like clastic (made of fragments), glassy, or porous, depending on how they were formed.

Examples of Rocks with Crystalline Texture:

* Granite: Composed of large, visible crystals of quartz, feldspar, and mica.

* Basalt: Contains smaller, less visible crystals.

* Marble: Formed from recrystallized limestone, with visible crystals of calcite.

Let me know if you have any other questions about rock textures!