Shale is the protolith of slate.
|Particle size Wentworth||≤ 62.5 µm|
|Special properties||Fissile; splits along
Shale in Hand Sample
Shale is often fossiliferous, frequently preserves sedimentary structures such as crossbedding and mudcracks, and comes in varying shades of grey, tan, black, green, and red.
Shale in Thin Section
Laminated shale in plane polarized light. Magnification: 100x Click here to see laminated shale rotating in crossed polars: Click here to explore a hand samp…
Laminated shale in cross polarized light. Magnification: 100x Click here to see laminated shale rotating in plane polars: https://youtu.be/J8lp7IJaejk Click …
Magnification: 40x Click here for crossed polars: https://youtu.be/ySkoEEiCNzI
Magnification: 40x Click here for plane polars: https://youtu.be/AJW4wmW39r8