Slate: Mineral information, data and localities.

i. A fine-grained rock displaying strong slaty cleavage and hence can be split into slabs and thin plates. Most slate was formed from shale during low grade

Slate Flour (Powder) Industrial Mineral Filler

Slate Metamorphic Rock, Sedimentary Origin, Uses in Construction

Phyllite: Mineral information, data and localities.

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GREEN SLATE | Slate is very lightly metamorphosed and well-foliated. This appearance often makes it difficult to distinguish from its parent rock,

Raw Green Slate, Metamorphic Rock Specimen - Approx. 1 - Geologist Selected & Hand Processed - Great for Science Classrooms - Eisco Labs

Slate - Geology Superstore

Stone cold killers - 11 of the world's most dangerous minerals

Digenite - Wikipedia

Spotted slate: Mineral information, data and localities.

Properties of Slate, Physical

What are metamorphic rocks? American Geosciences Institute, rocks

Slate: Identification, Pictures & Info for Rockhounds – Rockhound