Depends on the rock! Here are some you can use for normal rocks. (Don't use them all, use them according to what the rock you are thinking of is like.)
Rocky. :) enjoi!
a foliated rock is a metamorphic rock with a texture that gives the rock a layered appearance.
Obsidian is a hard, dark volcanic rock that is formed by the rapid solidification of lava. Its texture is glassy and shiny black.
Texture is the word used to describe a rock's constituent mineral size and arrangement, visible on a freshly fractured surface. Because a rock's surface can be weathered to a smooth or polished surface, the way it feels is not usually included in a description of texture.
The term used to describe the size and organization of the materials that comprise a rock is 'texture'.
The texture of an igneous rock that formed extremely slowly underground would likely be coarse-grained. This slow cooling process allows for the growth of large mineral crystals within the rock, leading to a visibly grainy texture.
A porphyritic texture can be a feature of igneous rocks, but 'porphyritic' is not used to describe metamorphic rock texture. Metamorphic rocks can be foliated or non-foliated, terms used to describe mineral alignment or banding, or the lack thereof.
The word that describes the shapes and sizes of grains in a rock is "texture." Texture refers to the arrangement and size of mineral grains in a rock, whether they are fine-grained, coarse-grained, or other specific characteristics.
In geology, texture refers to the physical characteristics of a rock, including the size, shape, and arrangement of its mineral grains or crystals. It can provide insight into the rock's formation processes and conditions, such as whether it is igneous, sedimentary, or metamorphic. Common terms used to describe rock texture include coarse-grained, fine-grained, glassy, and porphyritic. Understanding texture helps geologists interpret the history and environment of the rock's origin.
You can describe the rock by the process that allowed it to cool quickly: "Extrusive" or you can describe it by its texture: "aphanitic". An extrusive rock tends to be aphanitic = Rocks formed from lava flows tend to have small crystals.
no texture
well it depends. if its agray rock, it has a gray texture. if its a gold rock, it has a high value texture. etc