0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
What is the texture and grain structure of anthracite?
Anthracite has a hard and compact texture. Its grain structure is fine-grained and dense, with a highly developed lamination and a bright, shiny appearance. It has a high carbon content and a low moisture and volatile matter content, making it a high-quality coal with excellent heat and energy properties.
What is basalt's grain size?
Basalt's grain size is considered to be super-fine and very smooth.
What is the grain size of fine sand?
The grain size of sand is 1/16 mm to 2 mm, which is gritty and visible grain.
Is a pollen grain spore?
Yes of course, it is a microspore which becomes a pollen grain after developing an exine
What is the grain size of welded tuff?
Course grained/ Jagged/
What is the grain size of coal?
fine
What is bituminous coal texture and grain?
Fine grain, rough and soft
How are rocks with grains classified?
They are eather fine grain or course grain. Granite are course Grain, Basalts are fine grains.
Is obsidian course-grained or fine-grain?
fine grained
Can extrusive igneous rocks be both fine grain and course grain?
No only fine grained as they cool quickly when out of the earths mantle so no time for crystals to form.
Is rhyolite coarse grain or fine grain?
fine grained
What effect does a fast cooling rate have on grain size in igenous rocks?
Fast cooling lava or magma creates an aphanitic or small crystal (grain) textured igneous rock.
What is the difference between fine-grain and coarse-grain?
Coarse is ruff/hard, and fine grain is smooth/ soft!
Is coal fine grained?
Coal is fine grained, lack of visible texture.
Grain size for bituminous coal?
small
What is the difference between coarse and fine grain?
Coarse is ruff/hard, and fine grain is smooth/ soft!
Is sandstone grain fine?
Yes it is fine grained.
