Because it contains marble....................I think?
There is no specific or universal chemical formula for slate, because slate is formed up of various amounts of varying types of rock such as:QuartzMuscoviteIlliteBiotiteChloriteHematitePyriteApatiteGraphiteKaolinMagnetiteTourmalineZirconFeldsparIn some locations, such as the mountains of Wales, slate also contains iron.Because of the range of diversity of which slate is formed from - there is no universally accurate formula for slate in general.
Slate varies in color, but gray is one of the more common colors. Graphite can easily be distinguished from slate by its color. Slate has a dull luster while graphite appears metallic.
It is not recommended to use bleach to clean slate. Especially if you have colored grout because the bleach will cause discoloration.
Slate.
Slate's slightly coarse texture allows bits of chalk to 'stick' to board. Its foliation (process of splitting into thin sheets) allows it to be broken or cut easily into pieces ranging from a small student chalkboard - or as big as a giant chalkboard for the teacher to write on. Slate is also very durable, although now slate chalkboards are being overtaken by 'white boards' and SmartBoards.
Marble and slate
There are not many retailers for slate fireplace, most give intruction how to assemble or they sale slate to be applied. One website that may be helpful with different style fireplaces and the websites that offer them is http://www.slate-stone.com/slate-fireplaces.html .
slate and marble
slate and marble
slate and marble
Slate is a fine-grained, foliated, homogeneous metamorphic of silt. It is able to be cleaved into sheets which can be used as roofing slates, or left thicker to form hard wearing paths, in house building, ornamental fireplaces, and so on.
It's chief property is that it is (easily) split into thin sheets.
Yes. My fireplace is slate, and as far as i know, pretty much all mantles for fireplaces are stone. If they were wooden, wouldn't that kind of be... dangerous?
You may use muriatic acid to clean tile or slate floors if you encounter stains on them. It will need to be diluted in order to be useful.
Marble would be the most durable and beautiful but more difficult to carve than slate due to it's hardness .
Slate has been mined for generations. It is good for paving, tiling, making slate chalk boards, making fire places, etc etc. In Llanberis, Wales there is a Slate Museum. If you want to know more about slate and what it does Google the Slate Museum and they'll tell you all you want/need to know
n the 19th century, writing slates were made of slate, which is more durable than paper and was cheap at the time when paper was expensive. It was used to allow children to practice writing. Thin slabs of slate, typically three inches by five (roughly 9 × 12 cm), were also bound into "slate books" for adult use in workplaces.