Group+6

Igneous Rocks

Rhyolite ~Felsic,cools quickly,extrusive,fine grain Scorria ~Mafic,cools quickly,extrusive,fine grain Granite ~Felsic,cools slowly,intrusive,coarse grain Andesite  ~Mafic,cools quickly,extrusive,fine grain Diorite ~Felsic,cools slowly,intrusive,coarse grain Basalt~Mafic,cools quickly,extrusive,fine grain Pumice ~Felsic,cools quickly,extrusive,fine grain Gabbro~Mafic,cools quickly,extrusicve,prophoritic  Obsidian~Felsic,cools quickly,extrusive,glassy

Sedimentary Rocks

Conglomerate - Clastic, poorly sorted, contains round fragments Coal- Organic, Black color, contains plant material Limestone - Chemical, beginnings of geode, bubbles when acid is applied, Brecchia- Clastic, poorly sorted, contains angular fragments, Shale - Clastic, well sorted, fossils and stratification, contains fragment <span style="color: rgb(0, 0, 102)">Chert - clastic, well sorted, stratification, scratches limestone <span style="color: rgb(0, 0, 102)">Sandstone <span style="color: rgb(0, 0, 102)"> - Clastic, well sorted, stratification, contains fragments <span style="color: rgb(0, 0, 102)">Coquina - Organic, contains angular fragments, bubbles when acid is applied <span style="color: rgb(0, 0, 102)">Siltstone- Clastic, well sorted, stratification, contains fragments, bubbles when acid is applied

Metamorphic Rocks

<span style="color: rgb(0, 51, 0)">Quartzite - non-foliated, from quartz, formed by heat <span style="color: rgb(0, 51, 0)">Marble <span style="color: rgb(0, 51, 0)"> <span style="color: rgb(0, 51, 0)">- Non-foliated, from calcite, formed by heat. <span style="color: rgb(0, 51, 0)">Schist- foliated, from clourite, formed by pressure. <span style="color: rgb(0, 51, 0)">Gneiss-foliated, from muscovite, formed by both. <span style="color: rgb(0, 51, 0)">Slate- foliated, from shale, formed by pressure.