Mineralogy and crystallography UE Past Papers Questions.

Give two examples of minerals in each of the following crytal habits and aggregates

1. Dendritic
2. Botryoidal
3. Bladed
4. Fibrous

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Citing one example of minerals that show solid solution, show how the specific gravity of minerals is influenced by the atomic mass numbers of the constituent atoms.

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Giving one example in each case, explain how ionically bonded minerals differ from their covalent bonded counterparts in terms of their respective crystal symmetries.

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Name two gemstone minerals in each of the following group of minerals

1. Oxides
2. Nesosilicates

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Explain why minerals including quartz and its polymorphs are classified as silicates and not oxides although they have similar chemical formula to oxides of the general formula (Where X can be Ti, Mn, Sn, U or Th).

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