Felsite

Stone
Sedimentary	Sandstone • Siltstone • Mudstone • Shale • Claystone • Rock salt • Limestone • Conglomerate • Dolomite • Flint • Chert • Chalk
Igneous I.	Granite • Diorite • Gabbro
Igneous E.	Rhyolite • Basalt • Andesite • Felsite • Obsidian
Metamorphic	Quartzite • Slate • Phyllite • Schist • Gneiss • Marble
Unique	Bauxite • Lignite • Bituminous coal • Graphite • Kimberlite
Ore	Bismuthinite • Cassiterite • Copper nuggets • Galena • Garnierite • Gold nuggets • Hematite • Horn silver • Limonite • Magnetite • Malachite • Native aluminum • Platinum nuggets • Raw adamantine • Silver nuggets • Sphalerite • Tetrahedrite

Felsite
Uses
	Masonry ; Stone crafting ; Construction ;
Properties
	Igneous extrusive layer ; Material value 1 ;
Contains
	Hematite ; Native gold ; Native copper ; Tetrahedrite ; Native aluminum ; Galena ; Brimstone ; Realgar ; Orpiment ; Stibnite ; Rutile ; Hornblende ; Alunite ; Microline ;
	Wikipedia article

Felsite is one of the types of stone that forms entire layers.

"Felsite" is also the name of the third month of the dwarven calendar, covering late Spring.