Geology Chapter 1.1 0.0 / 5 ? GeologymineralsA2/A-levelOCR Created by: abbbywCreated on: 21-12-17 09:54 Mineral a naturally occurring chemical substance having a definite composition + crystalline structure 1 of 7 Rock an aggregate / mixture of 1 or more minerals 2 of 7 Sublimation the transition of a substance directly from the gas phase to the solid phase, or the reverse, without passing through the intermediate liquid phase 3 of 7 Lustre the surface appearance of a mineral, as it interacts with light 4 of 7 Crystal a solid with the plane faces formed when atoms are arranged in a structurally ordered pattern 5 of 7 Glass an amorphous solid with no crystalline structure 6 of 7 Grain Boundary the line of contact between mineral crystals in a rock 7 of 7
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