Mineralogy and crystallography questions.

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#	Question
1	Define the term solid solution as applied in mineralogy. Short answers
2	Outline the composition of Olivine using the $Ca_{2}SiO_{4} - Mg_{2}SiO_{4}-Fe_{2}SiO_{4}$ system and name the two series of minerals that show solid solution. Short answers
3	The structure of olivines is modelled as octahedral layers M2 and M1 that are cross-linked with SiO4 tetrahedra. How will the cations from minerals that show solid solution prefer to occupy the M2 and M1 octahedral sites? Short answers
4	What do the following minerals have in common ? Coesite and Stishovite Emerald, Turquoise and Amethyst Rhodochrosite, Siderite and Azurite Halite, Galena and Garnet Short answers
5	The covalennt bond is the strongest of all known chemical bonds. List three 3 physical properties of associated wiith covalently bonded minerals and explain why they tend to have lower symmetry that ionic bonded minerals. Short answers

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