no not all of them for example like Bituminous coal or coal, is form by plant remains
Sandstone has dull lustre.
by chemicals
red sandstone
Which Rock Will Brake If You Freeze It In Water Schist Pumice Or Sandstone? Answar: Sandstone
sandstone is not harder than flint because sandstone breaks in to smaller pieces.
Granite is typically harder than sandstone. Granite is an igneous rock that forms from the cooling of molten magma, making it more dense and resistant to abrasion compared to sandstone, which is a sedimentary rock.
No. Not at all.
Anthracite coal is harder than lignite coal. Anthracite has a higher carbon content and is more dense and brittle compared to lignite, which is softer and more crumbly.
There is Sandstone, Chalk, Coal, Limestone, and Shale.
limestone,shale,sandstone,and coal
Anthracite is harder than bituminous coal. Anthracite has a higher carbon content and lower moisture content, making it a more dense and harder coal type.
no not all of them for example like Bituminous coal or coal, is form by plant remains
Sedimentary rocks. Example, sandstone.
No, diamonds are harder than coal. Diamonds are one of the hardest natural materials on Earth, while coal is relatively soft and brittle.
a sandstone would break more easily because a quartzite is harder. a quartzite is made of sandstone melted together by magma
"The two basic rocks found in the Mammoth Cave area are limestone and sandstone. Limestone is the "soft" rock (more water soluble) that is dissolved more easily by water. Sandstone and shale are the rocks that are on top of the cave. They are "harder" (less water soluble) and don't let the water soak into the cave." http://www.nps.gov/archive/maca/learnhome/cur_k3_cla.htm