Rocks

Photo: Yosemite

Rock = the solid mineral material forming part of the surface of the earth and other similar planets, exposed on the surface or underlying the soil or oceans

Headlines
Vintage UK illustrations of rocks and minerals repurposed as a cool poster and interactive site – Boing Boing

Elsewhere on the Web
British and Exotic Mineralogy

Wikipedia
https://en.wikipedia.org/wiki/Rock_(geology)
https://en.wikipedia.org/wiki/Pumice
https://en.wikipedia.org/wiki/Sedimentary_rock
https://en.wikipedia.org/wiki/Soapstone
https://en.wikipedia.org/wiki/Limestone
https://en.wikipedia.org/wiki/Travertine

Planeta