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Greywacke

earth science Maturity 7-9

This is a dark, hard rock.

Greywacke-f-and-l.jpg
Greywacke-f-and-l.jpg
It is made of sand and tiny bits of other rocks. It can be grey or black. People use it to make statues. It is very strong. Can you find a dark rock?

40 words
🖼️ Images & Media (2)
File:Greywacke-f-and-l.jpg
Greywacke-f-and-l.jpg
File:Menkaura Bust Closeup.jpg
Menkaura Bust Closeup.jpg
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📚 Content adapted from Wikipedia | Readability: FK 14.1 | Vital Level 5