Talc is a common clay mineral easily identifiable due to its greasy texture. It forms only rarely as a crystal form, and most variations or of the massive kind where the texture is very finely crystalline. Colours can vary from white to green to pale blue. It has a perfect basal cleavage, when broken, tends to break in slices or slabs, similar to slate. Being extremely soft, it is placed at 1 on the Moh's scale of hardness and can be scratched and chipped simply with your finger nail. Many people will also use talc almost every day with out realising, it is the main ingredient in the manufacture of talcum powder as well as in corn starch. These particular samples from Egypt, they have a pale green colouration but may also have a blue hue if chlorite is present. Available by weight, we supply them in lots of 1 kilogram, the pieces will vary in size, between 20 mm to 70 mm, however, due to their platey cleavage the crystals form in, pieces will often be thin. The samples will come in a polythene bag along with an information label.