Know all about Mugearite and Siltstone properties here. All properties of rocks are important as they define the type of rock and its application. Mugearite belongs to Igneous Rocks while Siltstone belongs to Sedimentary Rocks.Texture of Mugearite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Siltstone is Clastic. Mugearite appears Dull and Soft and Siltstone appears Rough. The luster of Mugearite is not available while that of Siltstone is dull. Mugearite is available in black, brown, light to dark grey colors whereas Siltstone is available in brown, red, reddish brown colors. The commercial uses of Mugearite are creating artwork and that of Siltstone are raw material for the manufacture of mortar, soil conditioner.