Differentiating Quartz Cement Overgrowths and Quartz Framework Grains
How can you differentiate quartz cement overgrowths from the quartz framework grain?
Provide a screenshot of quartz cement overgrowth and a quartz framework grain.
Answer:
Quartz cement overgrowths and quartz framework grains can be differentiated based on their characteristics and locations within a sedimentary rock.
Characteristics and Differences:
Quartz cement overgrowths are formed when quartz crystals grow on pre-existing grains, filling in the spaces between them. Quartz framework grains, on the other hand, are the original grains within the rock.
To differentiate between the two, you can observe the following:
- Quartz framework grains are generally larger and more angular.
- Quartz cement overgrowths are smaller and more rounded.
- Quartz cement overgrowths are typically found within the pore spaces of the rock, whereas quartz framework grains are distributed throughout the rock.
- Quartz cement overgrowths may exhibit different crystallographic orientations compared to the original quartz framework grains.
Unfortunately, as an AI text-based bot, I am unable to provide screenshots. However, you can easily find examples of quartz cement overgrowths and quartz framework grains by conducting an image search online.