Know all about Taconite and Obsidian properties here. All properties of rocks are important as they define the type of rock and its application. Taconite belongs to Sedimentary Rocks while Obsidian belongs to Igneous Rocks.Texture of Taconite is Banded, Trellis whereas that of Obsidian is Glassy. Taconite appears Layered, Banded, Veined and Shiny and Obsidian appears Shiny. The luster of Taconite is earthy while that of Obsidian is vitreous. Taconite is available in red, reddish brown colors whereas Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors. The commercial uses of Taconite are as a touchstone, cemetery markers, creating artwork and that of Obsidian are creating artwork, mirror, used in aquariums.