Know all about Rhomb Porphyry and Troctolite properties here. All properties of rocks are important as they define the type of rock and its application. Rhomb Porphyry and Troctolite belong to Igneous Rocks.Texture of Rhomb Porphyry is Aphanitic to Porphyritic whereas that of Troctolite is Phaneritic. Rhomb Porphyry appears Rough and Troctolite appears Veined and Shiny. The luster of Rhomb Porphyry is subvitreous to dull while that of Troctolite is not available. Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, white colors whereas Troctolite is available in dark grey to black colors. The commercial uses of Rhomb Porphyry are an oil and gas reservoir, as a feed additive for livestock, metallurgical flux, soil conditioner, source of magnesia (mgo) and that of Troctolite are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones.