Rocks are naturally occurring solids which are composed of minerals & have been used by humans since ages. From Stone Age, rocks are used for various purposes. Also, the metals and minerals found in rock play an important role in our life. Get to know all the Talc carbonate Uses. We have provided you with all information about Talc carbonate rock here. Talc carbonate is nothing but a rock sequence or a mineral composition found in metamorphic ultramafic rocks.. Talc carbonate is available in colourless, grey, white colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Talc carbonate is white. Get to know more about Talc carbonate rock and characteristics of Talc carbonate rock in the next sections.