Know all about Slate and Hornblendite properties here. All properties of rocks are important as they define the type of rock and its application. Slate belongs to Metamorphic Rocks while Hornblendite belongs to Igneous Rocks.Texture of Slate is Foliated whereas that of Hornblendite is Banded, Foliated, Massive. Slate appears Dull and Hornblendite appears Foliated. The luster of Slate is dull while that of Hornblendite is vitreous to dull. Slate is available in black, brown, buff, green, light to dark grey, purple, red, shades of blue colors whereas Hornblendite is available in black, brown, green, grey colors. The commercial uses of Slate are blackboards, commemorative tablets, laboratory bench tops, standard material for the bed of billiard table, standard material for the beds of pool and snooker table, tombstones, used in aquariums, writing slates and that of Hornblendite are cemetery markers, commemorative tablets, creating artwork.