Due to the level of toxicity that abestos consist of, many people are surpries to learn that it is a natually occuring mineral and not a made made material. However, not only is asbestos a natrually occuring mineral, it's toxitity wass realises as far back as the days of the anceint Egyptians. Historic evidence demonstartess that asbestos has been mined and utilzie for over 3000 years. Historic evidence demonstartes that the Persians, Greeks and Egypitans, utilzie it for a variety of pupose
asbestos asbestos wamvibol. Serpentine asbestos mineral includes chrysotile, which have long curly and fiber that can be woven. Chrysotile is the model that has been widely used in commercial applications. Amphibole asbestos minerals include actinolite, tremolite, anthophyllite, crocidolite amosite. Amphibole fibres, such as straight stitch which is more fragile than that serpentine asbestos, more limited in its ability to be fabricated. How to use asbestos?
Exploring of Asbestos Asbestos (Greek a-, "not"; sbestos, "extinguishable") is a group of fibrous metamorphic minerals. The name is derived for its historical use in lamp wicks; the resistance of asbestos to fire has long been exploited for a variety of purposes. It was used in fabrics such as Egyptian burial cloths and Charlemagne's tablecloth, which, according to legend, he threw in a fire to clean. When asbestos is used for its resistance to fire or heat, the fibres are typically mixed
The lithification of loose sediment form sedimentary rock. Sedimentology is related to the basic sciences, which are biology, chemistry and physics. The fossils that deposited in the rocks are biological and weathering, diagenesis and formation of autochthonous sediments are about chemistry. The transportation and deposition of sediments are related to physics (Richard, 1988). Clastic rocks are the most common type of sedimentary rocks. Clastic rocks are composed of clasts or rock fragments which
Asbestos Case Study: A School and Ceiling Tiles Asbestos is a mineral that was used prevalently in the middle 1900’s as a building material. Asbestos is a naturally occurring mineral in the earth’s crust, that was once mined in the United States. Currently, the mining of asbestos is banned in the United States, and the use of asbestos is highly regulated. During the peak use of asbestos, it was used primarily for its insulating properties, for heat protection and sound dampening. Some examples of
mesothelioma, it is important to know some basics about asbestos that causes this dangerous disorder. Asbestos is a kind of mineral seen in rocks as well as in other natural minerals. There are two types of asbestos are known such as serpentine and amphibole. The former is considered to be less friable or breakable than the latter one. Further classification is done on asbestos which is generally in the form of fibers. These fibers are so thin and it has been found that human air is more than one thousand
Asbestos has been used since prehistoric times and there is archaeological evidence from Finland of pottery containing asbestos fibers dating from 2500 BC (Mcculloch, 1986). Where asbestos fibers were mixed with clay to form stronger ceramic utensils and pots (Benarde, 1990), the ancient Greeks used it to make lamp wicks and other fireproof items. However, the romans wove asbestos fibers into fabrics to make towels, nets and even head coverings for women (Asbestos Diseases Society of Australia, 1995
Introduction In this lab, eight unidentified mineral samples are the subject of observation and experimentation. The purpose of this lab is to identify the samples based on the observations and experimentation. This paper will identify each of the samples and briefly discuss each one. Mineral A - Kaolinite Kaolinite, composed of hydrated aluminum silicate, is the result of “sedimentary rocks whose sediments were derived from weathered igneous and metamorphic rocks” (Schroeder, 2013). Much like
electricity. Asbestos has been mined and used in many industries like construction, automotive, and ship building. These asbestos minerals are divided into two major groups, the serpentine asbestos and the amphibole asbestos. Serpentine asbestos is the form that is mostly used in commercial applications. Amphibole can stay in the lungs for a longer time and hence considered more harmful among the two (Asbestos Exposure and Cancer Risk). Asbestos has been used commercially in the United States since the 1800s
Granite is a readily-available, durable material. That makes it an outstanding choice for kitchen countertops, since they take a lot of daily abuse in most homes. The conditions that let granite stone form also ensure that every piece of granite is unique. If you get a granite countertop installed, no one else will ever have one that looks exactly like yours. What trips a lot of people up is what looks like arbitrary pricing for granite. It's all the same stuff, isn't it? Why should one piece of
Factors effecting respiration Cigarettes Drugs Pollutants Factors effecting respiration There are several factors that affect respiration Here are a few examples; Drugs Pollutants Cyanide Cigarettes and nicotine Tar Carbon monoxide Carcinogens These factors affect metabolic pathways in terms of how efficiently aerobic respiration can proceed. Drugs Different classes of drugs have various effects on the body. They can affect ventilation and breathing rate, thus having a knock-on effect on
Chloromethane, more commonly referred to as methyl chloride, is an organic compound categorized as a haloalkane functional group. Functional groups are atoms that control how the molecule will react with other molecues. Haloalkane functional groups consist of a carbon atom with four single bonds and one of the bonds in occupied by an element in the Halogen family; in this case chlorine. The structural formula is CH3Cl. This formula effects some of the physical properties which include the boiling
Geological Setting The Cape Granite Suite formed about 560-520 Ma during the Saldanian orogeny which occurred between 780 to 510 Ma (Harris & Vogelli, 2010; Villaros, Stevens & Buick, 2009). This orogeny formed as a result of the convergence of the Rio de la Plata and Kalahari cratons during the formation of Gondwanaland (Harris & Vogelli, 2010). The granitoids of the CGS were intruded into the three terranes of the metasedimentary and metavolcanic Malmesbury Group which are divided by distinct
Introduction Four tectonic environments in which magmatism occurs: destructive plate margins, constructive plate margins/divergent plate boundaries, oceanic intraplate and continental intraplate. Arcs are magmatic products of destructive plate margins (stern, 2001) which are referred to as sites where new continental crust is created and old oceanic crust is subducted back into the mantle (Hawkesworth , Hergt, McDermott, Ellam, 1991). An island arc is a form of an arc produced by the subduction