Definition of Black shale

1. Noun. (geology) A dark, muddy rock, rich in sulfides and organic material. ¹

¹ Source:

Black Shale Pictures

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Lexicographical Neighbors of Black Shale

black root rot fungus
black rot
black rudderfish
black sage
black sally
black salsify
black salts
black saltwort
black sanctis
black sanctus
black sanctuses
black santis
black santos
black scabbardfish
black shale (current term)
black sheep
black sickness
black slug
black slugs
black smoker
black snakeroot
black spleenwort
black spore
black spot
black spots
black spruce
black squirrel
black stork
black stuff

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