Group+5

Igneous Rocks

Rhyolite - fine grained, exrusive, quick cooling rate, felsic Scorria - fine grained texture, extrusive, quick cooling rate, mafic, looks like pumice but doesnt float. Granite - coarse texture, felsic, slow cooling rate, intrusive, bathroom pass is made out of this. Andesite  - fine grained, extrusive, quick cooling rate, mafic, Diorite - coarse grained, intrusive, slow cooling rate, felsic, looks like an oreo milkshake. Basalt - fine grained, extrusive quick cooling rate, mafic, black and tan speckles. Pumice - fine grained, extrusive, quick cooling rate, felsic, floats in water, bubbles Gabbro - porphyritic, slow and fast cooling rate, intrusive and extrusive, mafic  Obsidian - Glassy and black, extrusive, quick cooling rate, felsic.

Sedimentary Rocks

Conglomerate - clastic, poorly sorted, looks like coquina but less seashelly Coal- organic, black Limestone - geodes, chemical Brecchia- poorly sorted, clastic, grey Shale - fossils stratefication, well sorted clastic <span style="color: rgb(0, 0, 102)">Chert - scratches limestone, stratefication, well sorted, clastic <span style="color: rgb(0, 0, 102)">Sandstone <span style="color: rgb(0, 0, 102)">- stratification, well sorted, clastic, looks like a desert, ripple lines. <span style="color: rgb(0, 0, 102)">Coquina - look like a bunch of seashells glued together. <span style="color: rgb(0, 0, 102)">Siltstone- stratification, reacts with acid, well sorted, clastic

Metamorphic Rocks

<span style="color: rgb(0, 51, 0)">Quartzite - formed by heat, rock of quartz, non foliated <span style="color: rgb(0, 51, 0)">Marble <span style="color: rgb(0, 51, 0)"> <span style="color: rgb(0, 51, 0)">- formed by heat, used to be calcite, non foliated <span style="color: rgb(0, 51, 0)">Schist- formed by pressure, used to be chlorite <span style="color: rgb(0, 51, 0)">Gneiss- formed by heat and pressure, used to be muscovite, foliated <span style="color: rgb(0, 51, 0)">Slate- made by pressure, comes from shale, foliated.