Distinction between clay minerals and nonclay minerals.
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Distinction between clay minerals and nonclay minerals.
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- is one of the basic and most popular units of clay minerals. Select one: a. Alumina octahedron b. Alumina hexahedron c. Silica octahedron d. Silica tetrahedronA 12.80 lb sample of quartzite was found to have the following amounts of material retained on each sieve/pan: 1/2 in. 0 lb, 3/8 in.= 1.20 lb, No. 4 = 4.87 lb, No. 8 = 3.58 lb, No. 16 = 2.09 lb, No. 30 0.90 lb, pan = 0.27 lb. a. Calculate the fineness modulus of the aggregate. b. Is this sieve analysis valid for acceptance purposes? Explain why. c. What is the ASTM size number of this aggregate?List the 10 minerals in the Moh’s hardness scale, from the softest one to the hardest one.
- Name two minerals in your set that have two directions of cleavage at right angles, and the third direction is fracture.Write T on the blank provided if the statement is correct. If it is false,underline and replace the word(s) with the word(s) that will make the statement true. ___________________ Clay minerals can be recognized from their crystal structures, and physicaland chemical properties.___________________ A 1:1-layer phyllosilicate has two tetrahedral sheets attached to atetrahedral sheet.___________________ A 2:1-layer phyllosilicate has two octahedral sheets and a tetrahedralsheet.___________________ Soil with a high CEC adsorbs limited number of anions in the soil solutionsite.___________________ Soil with a low CEC absorbs huge number of cations in the adsorptionsite.Describe the basic properties of Kaolinite.
- Coarse and fine aggregates defined as the particles that are retained on a 4.75 mm sieve and pass through a 4.75 mm sieve, respectively. Select one: O True on O Falsechoose the correct answer With more coarse aggregate, does the quality of materials change from less to better quality? a-yes b-no:Hardness of Gypsum is more than hardness of Diamond O Talk O Calcite O :The ratio of volume of voids to volume of solids is Porosity O void ratio O Density O