A tuffite consists of angular and / or rounded fragments of effusive rocks and their minerals, also may contain volcanic ash, pumice and clay minerals.
2.
All architectonic elements of La Quemada were constructed with rhyolite ( volcanic effusive rock of the granite family ) slabs, extracted from the hill located northeast of the Votive Pyramid.
3.
Igneous rocks are formed by the cooling and / or solidification of magma and the formation of a dense network of crystals below the Earth's surface as intrusive rock or on the surface as effusive rock.
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