1. Phaneritic texture

• For small degrees of undercooling, few crystals will form and grow at a mordant wait until the run into each other. Because there are few nuclei, the crystals will be able to grow relatively large size, intercourse grain texture will create. This would be called phaneritic texture. See figure 2.1
• This type of texture generally occurs in plutonic rocks. In a rock with phaneritic texture, where all grains are about the same size, wheels the grain size ranges from 1 mm to 3cm which is fine grained to very coarse grained respectively.

2. Aphanitic texture

• At large degrees of undercooling, the nucleation rate will be high and the growth rate also high. This will result in many crystals rapidly, but because there are so many crystals, they will run into each other before they have time to grow and the resulting texture will be a fine grained texture.
• If the size of the grains are so small crystals cannot be distinguished with a hand lens, the texture is said to be aphanitic texture. This type of texture generally occurs in Volcanic rocks see figure 2.2

3. Porphyritic texture

• Two stages of cooling that is slow cooling to grow a few large crystals, followed by Rapid cooling to grow many smaller could result in porphyritic texture, a texture with two or more distinct sizes of grains. Single stage cooling can also produce a porphyritic texture.
• In a porphyritic texture, the grains are called phenocrysts and the material surrounding to it is called ground mass for Matrix.
• This type of texture generally occurs in volcanic and hypabyssal rocks. See figure 2.3

4. Poiklitic texture

• In this type, smaller grains of one mineral are completely enclosed in large, optically continuous grains of another mineral see figure 2.4

5. Holohyaline texture

• At high degrees of undercooling, few crystals will form and they will not grow to any large size.
• The resulting texture will be glassy, the few tiny crystals called Microlites. A Completely Glassy texture is called Holohyaline texture.

6. Holocrystalline texture

• A completely crystalline texture is called holocrystalline texture.

7. Merocrystalline texture

• A texture which is partly crystalline and partly glossy is called Merocrystalline texture.

8. Vesicular Texture

• A texture in which vesicles (holes,pores, or cavities) within the igneous rock are clearly visible is called vesicular texture.

9.Ophitic Texture

• In this type, laths of plagioclase in a coarse grained matrix of pyrixene crystals, wherein the plagioclase is totally surrounded by pyroxene grains.

10. Hyalopilitic Texture

• It is a texture wherein microlites of plagioclase are more abundant than groundmass and the groundmass consists of glass which occupies the tiny intertices between plagioclase grains.