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MineralsRocksQB
Term | Definition |
---|---|
mineral | a solid substance |
crystal structure | a arragment of ions and atoms |
Moh's Hardness Scale | a system listing ten minerals that the hardness of other minerals can be compared with. |
Luster | quality and intensity of light reflected from the surface of a mineral. |
clevage | is the tender of an mineral to break along a flat surface |
fracture | the tender of an mineral to not break along a flat surface |
streak | The colour of a mineral when powdered and observed against an unglazed white porcelain plate. |
hardness | the abiltiy of an mineral to be scratched. |
crystalization | chemical solid–liquid separation technique, in which mass transfer of a solute from the liquid solution to a pure solid crystalline phase occurs |
texture | refers to the relationship between the materials of which a rock is composed. |
fine grained | generally indicate magma that rapidly cooled at or near the Earth's surface. |
coarse grained | generally indicate magmas that slowly cooled deep underground. |
porphryry | an igneous rock consisting of large-grained crystals such as feldspar or quartz dispersed in a fine-grained feldspathic matrix or groundmass. The larger crystals are called phenocrysts. |
intrusive Igenous rock | formed by magma |
extrusive igenous rock | formed by lava |
compaction | this refers to the process by which a sediment progressively loses its porosity due to the effects of loading. This forms part of the process of lithification. |
erosion | the process of eroding or being eroded by wind, and water |
cementation | the binding together of particles or other things by cement. |
depositon | the geological process in which sediments, soil, and rocks are added to a landform or land mass. |
clastic rock | are composed of fragments, or clasts, of pre-existing minerals and rock. |
chemical rock | rocks with sedimentary chemicals |
organic rock | rocks by living things |
sediment | the process of living things remain. |