GEOLOGY
CRYSTALLOGRAPHY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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{001}
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{111}
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{110}
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{101}
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Detailed explanation-1: -Miller indexes. A plane (110) means that plane intersect points are a, 0, 0, 0, a, 0, and 0, 0, ∞; with (111), plane intersect points are, in a similar way, a, 0, 0, 0, a, 0 and 0, 0, a. Correspondingly, the (321) plane is a plane with intersects at points a/3, 0, 0, 0, a/2, 0 and 0, 0, a (Figure 1.2(f)).
Detailed explanation-2: -What is the Miller index of the line of intersection of (110) and (111) planes in a cubic system? Ans. [110] or (I10]
Detailed explanation-3: -Miller indices of the line of intersection of (-1-11) and (110) are [-110]. (the intercept is “at infinity").
Detailed explanation-4: -The Miller indices of the planes ABC’, ABC, ABC”, AA"BB” are (112), (111), (221), (110), respectively. These planes have AB, or [11¯0], as common zone axis.