Many tremolite-schists contain much talcand chlorite, and as these rocks have been derived from peridotites they not infrequently show residual grains of olivine.
Biotite and primary hornblende suffer comparatively little change; olivine disappears, and garnet, talc and tremolite or anthophyllite take its place.
Glass is one of the most fissile or "splittable" of all materials; but it is so just in the same way that ice is, and just in the opposite way to that in which slate or talc is.
Talc also enters in large proportion into the composition of this granite.
This talc is in tabular masses, two or three inches in diameter, and about half an inch in thickness.
In the granitic soil which lay about it we saw many fragments of pyrites, also uncommonly large and beautiful laminæ of talc intermixed with scales of mica.
The talc in some instances forms an integrant part of the granite, and {160} we have seen it blended with mica in the same specimen.
Having collected {159} several beautiful masses of an aggregate of felspar, talc and quartz, we returned to the house where our breakfast was in preparation.
Defn: The cohesion of the particles on the surface of a body, determined by its capacity to scratch another, or be itself scratched;-measured among minerals on a scale of which diamond and talc form the extremes.
For use in the street there were torches and also lanterns, which had a metal frame and were "glazed" with sheets of transparent horn, with bladder in the cheaper instances, or with transparent talc in the more costly.
The litter may either be carried open on all sides, or with curtains of coloured stuffs partially drawn, or it may be enclosed by windows of talc or glass.
Should any of your photographic friends wish to transmit collodion pictures through the post, I would suggest that thin plates of talc be used instead of glass for supporting the film; I find this substance well suited to the purpose.
Water is sometimes represented by lengths of silver purl stretched tightly across a flat surface of satin or laid-stitches, but not infrequently, instead of the purl, sheets of talc are laid over the silken stitchery.
The water in which Susannah laves her legs is worked in imitation of ripples, and looks fresher than the rest owing to the recent removal of the talc with which it was covered.
Essentially this dusting powder consists of the well-known substances talc and zinc stearate in about equal proportions to which small quantities of magnesium carbonate and boric acid have been added.
Talc is always of secondary origin, generally derived by chemical alteration of various common minerals rich in silicate of magnesia.
Talc proper is used as a lubricant, to weight paper, in soap, as dustless crayon, talcum powder, etc.
It may consist of the ingredients of gneiss, or of an extremely fine mixture of mica and quartz, or talc and quartz.
Occasionally it derives a shining and silky lustre from the minute particles of mica or talc which it contains.
It is then exposed to the sun, and the extraneous talc is brushed off.
The glue, it is obvious, causes the talc to adhere.
To see the eastern part of it, however, it was necessary to cross to the opposite point, where some talc slate, pieces of which measured four inches in length, was found imbedded in quartz.
Many workers adhere to the powderedtalc or French chalk already mentioned.
When quite dry, lightly dust it with fine talc powder (French chalk) and polish off again with a bit of clean rag.
He breathed the atmosphere of the day of toil, a hot, stifling atmosphere, heavy with the odor of boiled talc and varnish.
Prominent among them was the practice of writing down curses on lead or talc with a view to the injury of those against whom the writer conceived that he had a grudge.
That talc was also used is shown by the fact that several of the lanterns in the Museum at Naples have their walls made of this material.
And I'll bring you one of those silk things with talc windows to wear over your head and face, so no one will see that Lady Betty Bulkeley is 'doing' Chicago to-day.
I looked at him merrily through my talc window, for I felt happy and light-hearted, and the world seemed such a very nice place to live in at that moment.
Then we used a suction draft at night, drawing the talc from the earth, filling one drum after another.
We cannot use oil to lubricate these wooden shafts and bearings as it softens the wood, so all parts exposed to friction are sprayed constantly by a gust of talc from a blower.
And in this way, with the talc that entered Aline's eyes, malice entered our hearts.
The talcfront over her face had been damaged in the morning's storm, and somehow her eyes were injured.
The most popular and reliable table is that of Mohs, in which he takes talc as the softest of the rarer minerals and classes this as No.
As for the talcmask and the black moustache, that is not much to help us, it is true.
He wore a talc mask over the upper part of his face, and had a little black moustache, and was dressed in a heavy great-coat of blue with a white collar.
Ground talc or soapstone is used as a filler for paper, paint, and rubber goods, and in electrical insulation.
The United States is independent of foreign markets for the bulk of its talc consumption, but some carefully prepared talc of high quality is imported from Canada, Italy, and France.
Pyrophyllite (hydrated aluminum silicate) resembles talc in some of its properties and is used in much the same way.
Talc deposits consist of lenses and bands in metamorphic limestones, schists, and gneisses of ancient age.
Italy is our chief source oftalc for pharmaceutical purposes, though recently these needs have been largely supplied by high-grade talc from California.
The talc itself is usually schistose like the wall rocks, and is largely a product of mechanical mashing.
Talc is also derived from the recrystallization of magnesian carbonates.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "talc" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: alabaster; asphalt; mineral; powder
