Q: Is a slate a fine-grained? ¶
A: Yes, and foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism.
Q: Is a slate plentiful it is also used in pieces of various sizes for building walls and hedges? ¶
A: Yes, and sometimes combined with other kinds of stone.
Q: Is a slate produced on the east coast of Newfoundland? ¶
A: Yes, and in Eastern Pennsylvania, Buckingham County, Virginia, and the Slate Valley of Vermont and New York, where colored slate is mined in the Granville, New York area.
Q: Is a slate used for tombstones and commemorative tablets? ¶
Q: Is a slate not to be confused with shale? ¶
A: Yes, and from which it may be formed, or schist.
Q: Is a slate secured? ¶
Q: Is a slate usually dark purple to blackish? ¶
A: Yes, and many local structures are still roofed with slate tiles.
Q: Is a slate called "slaty cleavage"? ¶
A: Yes, It is caused by strong compression causing fine grained clay flakes to regrow in planes perpendicular to the compression.
Q: Is a slate used by building professionals as a result of its beauty and durability? ¶
Q: Was a slate extensively used for blackboards and individual writing slates? ¶
A: Yes, for which slate or chalk pencils were used.
Q: Is a slate particularly suitable as a roofing material as it has an extremely low water absorption index of less than 0.4%? ¶
A: Yes, and making the material waterproof.
Q: Is a slate mainly composed of the minerals quartz and muscovite or illite? ¶
A: Yes, and often along with biotite, chlorite, hematite, and pyrite and, less frequently apatite, graphite, kaolinite, magnetite, tourmaline, or zircon as well as feldspar.
Q: Is a slate often used as table coasters? ¶
Q: Is a slate abundant in Brazil? ¶
A: Yes, and the world's second-biggest producer of slate, around Papagaios in Minas Gerais, which extracts 95 percent of Brazil's slate.
Q: Is a slate found in the Arctic? ¶
A: Yes, and was used by Inuit to make the blades for ulus.
Q: Is a slate also fire resistant and energy efficient? ¶
Q: Is a slate incredibly durable and can last several hundred years? ¶
A: Yes, and often with little or no maintenance.
Q: Was a slate used by the ancient Maya civilization to fashion stelae? ¶
Q: Was a slate commonly used to refer to shale well into the 20th century? ¶
Q: Was a slate formed in low heat and pressure, compared to a number of other metamorphic rocks, some fossils can be found in slate? ¶
A: Yes, sometimes even microscopic remains of delicate organisms can be found in slate.
Q: Is a slate frequently grey in color? ¶
A: Yes, and especially when seen, en masse, covering roofs.