Know all about Rhomb Porphyry and Borolanite properties here. All properties of rocks are important as they define the type of rock and its application. Rhomb Porphyry and Borolanite belong to Igneous Rocks.Texture of Rhomb Porphyry is Aphanitic to Porphyritic whereas that of Borolanite is Granular. Rhomb Porphyry appears Rough and Borolanite appears Banded and Foilated. The luster of Rhomb Porphyry is subvitreous to dull while that of Borolanite is greasy to dull. Rhomb Porphyry is available in black, brown, colourless, green, grey, pink, white colors whereas Borolanite is available in brown, buff, cream, green, grey, pink, white 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 Borolanite are cemetery markers.