Coarse grain
Visible crystals or grains would be referred to as a coarse grained texture.
When all grains in a rock are large and easy to see, the rock is described as coarse-grained.
The size, shape, and arrangement of grains in a rock is known as its texture. Grains can vary in size from fine (small) to coarse (large), and can be rounded or angular in shape. The position of grains within a rock can be random or show preferred orientation.
Fine grains of rocks are referred to as "clasts." The word "clast" comes from the Greek word "klastos," meaning "broken."
Sandstone is an example of a large grain clastic rock, composed primarily of sand-sized grains that are cemented together. It forms from the accumulation and compaction of individual sand grains over time.
When all grains in a rock are large and easy to see, the rock is described as coarse-grained.
When all grains in a rock are large and easy to see, the rock is described as coarse-grained.
Coarse grain
When all the grains in a rock are large and small to see, the rock is described as having a bimodal grain size distribution. This means that the rock contains both large and small grains, with little to no medium-sized grains present.
Visible crystals or grains would be referred to as a coarse grained texture.
Visible crystals or grains would be referred to as a coarse grained texture.
When all grains in a rock are large and easy to see, the rock is described as coarse-grained.
fine-grained
Conglomerate
No. They are large and visible to the unaided eye.
No. They are large and visible to the unaided eye.
The size, shape, and arrangement of grains in a rock is known as its texture. Grains can vary in size from fine (small) to coarse (large), and can be rounded or angular in shape. The position of grains within a rock can be random or show preferred orientation.