Essay on Clay and Common Clay Minerals

Submitted By erc0123

Words: 397

Pages: 2

Open Document

1. A sandy soil has a porosity of 38% (porosity, n = volume of void/total volume = e/(1+e)) and the grain specific gravity Gs is 2.69. Determine:  (a) The void ratio; (b) The dry unit weight; (c) The saturated unit weight; (d) The bulk unit weight at a water content of 17%

Q2:
The three common clay minerals are kaolin, montmorillonite and illite.

Kaolin consists of many ‘two layer sheets’, which is made up of a tetrahedral layer and an octahedral layer. These layers are two layer sheets are bonded together quite strongly by hydrogen bonding, leaving kaolin particles very thick. * Specific surface= 20m2/g * Very stable * Very tight lattice structure that prevents water penetration * Not subject to expansion when saturated * High internal friction due to strong silicate structure

Montmorillonite is a three-layer mineral that has weak bonding between the sheets. This allows water to penetrate between individual sheets. This leaves the particle thickness of montmorillinite as just the thickness of a single three-layer sheet. * Specific surface= 800 m2/g * Bonding is weak, therefore unstable * Significant affinity for water, very easily attracts water due to weak connections, therefore water easily penetrates between sheets and particles. * Subject to expansion when saturated (Large volume expansion when water is present) * Low internal friction due to weak connections.

Illite Clay Mineral * Specific surface 80 m2/g * Bonding is intermediate * Water affinity not

Questions On Science

right e. Experiment and/ or observe (collect data) f. Analyze and interpret data g. Peer review/ publish/ more peer review h. Repeat again i. With the exception of IPR (Intellectual property rights, patents, copyrights, etc) 6. Granite is the most common rock on the earth (igneous) 7. A theory is out there for everybody to see 8. People will try to prove your theory wrong (if it’s interesting enough) 9. If people can’t prove it wrong, you have a strong theory. Strong theories tend to rely on lots…

Words 937 - Pages 4

Impact Crusher Make Stone into sand Essay

most common limestone or dolomite rock.The cause of the metamorphic recrystallization variable original carbonate mineral grains.The resulting marble rock usually by an interlocking carbonate crystal Mosaic.Main sedimentary structure and original carbonate (protolith) will usually be modified or destroyed. Results the pure white marble very pure (silicate) poor limestone or dolomite rock.The characteristics of vortex and veins many color varieties of marble is usually by a variety of mineral impurities…

Words 416 - Pages 2

Hydroponics and Water Essay

hydroculture and is a method of growing plants using mineral nutrient solutions, in water, without soil. Terrestrial plants may be grown with their roots in the mineral nutrient solution only or in an inert medium, such as perlite, gravel, mineral wool, expanded clay pebbles or coconut husk. Researchers discovered in the 18th century that plants absorb essential mineral nutrients as inorganic ions in water. In natural conditions, soil acts as a mineral nutrient reservoir but the soil itself is not essential…

Words 5449 - Pages 22

How Did Mummification Change Over Time

a Greek and Roman mummy, the crown was not wrapped with the mummy. This was for two purposes- to show the natural hair of the mummy, and also to make sure the mummies did not decay during the embalming process (Taylor 91). Mummies rotting was a common problem in this period of mummification, but the embalmers were sure to remove the crown of the mummy to…

Words 901 - Pages 4

Essay on GEO 101 STUDY GUIDE WTK LIST 2

FRACTURES AND ROCK STRUCTURES THAT SHOW NO DISPLACEMENT 10. Which low-grade metamorphic rock, composed of extremely fine-sized (can’t see w/ naked eye) mica and other mineral grains typically exhibits well-developed rock cleavage (fracturing)? SLATE 11. Which textural term denotes a strong, parallel alignment of different mineral bands in a metamorphic rock? FOLIATION 12. Which response best represents the conditions of contact metamorphism? PRESSURE ARE FAIRLY LOW; ROCK IN UPPER PRT OF CRUST HEATED…

Words 940 - Pages 4

Steps Of Synthizing Inorganic Compounds Into Organic Attems

and inorganic ions to synthesize organic molecules.  Plants obtain CO2 from the air. Most vascular plants obtain water and minerals from the soil through their roots.  The branching root and shoot systems of vascular plants allow them to draw from soil and air reservoirs of inorganic nutrients. • Roots, through fungal mycorrhizae and root hairs, absorb water and minerals from the soil. • CO2 diffuses into leaves from the surrounding air through stomata. Concept 37.1 Plants require certain…

Words 4987 - Pages 20

Silicon Essay examples

is used to produce transistors, solar cells, rectifiers, and other important solid-state electronic devices. Silicones range from liquids to hard solids and have many useful properties, including use as adhesives, sealants, and insulators. Sand and clay, which have silicon in them, are used to make building materials. Silica is used to make glass, which has many useful mechanical, electrical, optical, and thermal properties. Silicon makes up 25.7% of the earth's crust, by weight, making it the…

Words 449 - Pages 2

Essay on Science: Sedimentary Rock and Calcium Carbonate

sand, which is about the size pin’s head, silt, which is roughly the size of a grain of salt and clay clasts, which are about the size of a grain of flour. The sand can be held together by silica or calcium carbonate to form sandstone. When silt is deposited in seas or lakes siltstones may form, when clay is deposited into the same spots shale's may form in layers that are easily split. When the silt, clay, and sand mix they may form mud stones, which are typically larger than shale's and well consolidated…

Words 681 - Pages 3

The Importance Of Earth Resources

found in enormous quantities although spatially discontinuous Scarce metals (copper, lead, zinc, molybdenum, silver, gold, mercury…) are found in small and isolated concentrations, and future availability is questionable Non-metallic resources Minerals and substances used for fertilizers, abrasives, construction, industry, etc. Crushed stone, sand, and gravel are used to make cement Some are used solely to provide the resources needed to make chemicals (e.g. halite is an important source of sodium…

Words 2413 - Pages 10

geology time notes 10-23 Essay

boundaries – tension or hot spots -most common on earth -usually undersea -usually quiet eruption -Strombolian Hawaiian Pelean -does not expoled -relatively short with respect to width -lava flows low viscosity/mafic chemistry -Basaltic rock -decompression melting Compostie Volcanoes -also called stratovolcanoes exp: mammoth mountain. -made up of lava and pyroclastic material /-convergent plate boundaries -subduction zones (only) -most common on land -explosive eruptions -Plinian…

Words 1133 - Pages 5