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geology.com/rocks/shale.shtml

Shale is a fine-grained sedimentary rock that forms from the compaction of silt and clay-size mineral particles that we commonly call "mud." This composition places shale in a category of sedimentary rocks known as "mudstones." Shale is distinguished from other mudstones because it is fissile and laminated.

sciencing.com/tell-difference-between-shale-slate-8697556.html

How to Tell the Difference Between Shale and Slate By Alex Silbajoris; Updated April 25, 2017 . Ryan Chylinski/iStock/Getty Images . When muddy sediments are buried and compacted for a long time, they form shale. When shale is buried deeper, for a longer time, and heated by the Earth's crust, it forms slate. The qualities of shale and slate ...

miningmatters.ca/.../rock-identification-guide

Complete with photos and information about each rock’s distinguishing characteristics, this rock identification guide has been designed to assist you in identifying the rocks provided in the Deeper and Deeper and Mining Matters II kits. ... Shale sediments are deposited in still water (low energy) such as a lake or a deep, slow river.

www.reference.com/science/difference-between-shale-slate-a...

Shale is a sedimentary rock while slate is a metamorphic rock formed from shale. Slate is much more durable than shale due to the metamorphic process it undergoes. Slate and shale are similar in appearance. Visually, it can be hard to tell the two apart.

www.halliburton.com/content/dam/ps/public/lp/contents/Case...

successfully identify the cement and displaced shale in the annulus in one run. The combination of the CAST-M impedance map and the RBT-M cement map provided extra confidence in the azimuthal shale coverage. The shale identification road map, along with MVTP, allowed the log analyst to quantify the shale

www.njminerals.org/moreid.html

Shale is not the best kind of rock for mineral prospecting, but it's sure great for fossils. Sandstone - like shale, this is a clastic or detrital sedimentary rock-- originating from the weathering and breakdown of other rocks. Sandstone was formed from grains of sand instead of silt or clay, so its final appearance is that of a rock made of ...

www.pitt.edu/.../ClasticSedRocks/MudstonesShales1.html

Mudstone and Shale. Mudstones and shales are made of silt- and clay-sized particles that are too small to see. The only difference between mudstone and shale is that mudstones break into blocky pieces whereas shales break into thin chips with roughly parallel tops and bottoms. Both are made of ancient mud.

sciencing.com/identify-metamorphic-rocks-2104486.html

How to Identify Metamorphic Rocks By Contributor; Updated April 24, 2017 . Rocks image by TAsh from Fotolia.com. Rocks that undergo changes are metamorphic rocks. Igneous and sedimentary rocks eroded by wind, weather and water become metamorphic rocks. Metamorphic rocks are changed by heat and pressure.

www.answers.com/Q/How_can_you_identify_slate

The easiest way to identify slate is to break a sample. Slate will cleave very easily in one direction and form large sheets. It can often be popped off in thin layers with a chisel or a screwdriver.