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Why granite igneous rock sample can have vastly different appearance?
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What sample is igneous and has a coarse texture?
Granite
What is the maximum amount of plagioclase feldspar possible in a sample of granite?
65%. Any more, and it is not considered granite.
Which term or terms could be used to describe this sample of granite?
heterogeneous mixture
What type of rock is clemina granite?
'Clemina' granite may be a trade name associated with a decorative rock. Without a sample, identification would not be possible.
There are different sizes of these in different igneous rocks?
Different igneous rocks have different crystal sizes because they have cooled at different rates. Those with larger crystals have cooled at a slower rate. A single rock sample can have varying crystal sizes because there are different minerals within it. It is consistently the Quartz crystals in Granite which cool fastest, leaving less space for the Mica, which forms later. This means that the Quartz crystals are larger than others in the rock, resulting in an inconsistency in size.
What sample is igneous and has a coarse texture?
Granite
What is the maximum amount of plagioclase feldspar possible in a sample of granite?
65%. Any more, and it is not considered granite.
A sample best dated using radiocarbon would be a?
Rocky Mountain granite
Which term or terms could be used to describe this sample of granite?
heterogeneous mixture
What is the general appearance of the soil sample?
Brown.
How old is diorite?
That depends on the sample, it is igneous so it could be any age.
What type of rock is clemina granite?
'Clemina' granite may be a trade name associated with a decorative rock. Without a sample, identification would not be possible.
How old is gold of troy granite?
700 million years, according to the sample statment.
Different parts of a sample material have the same compositions what can you conclude about the material?
Your material is homogeneous. common salt is such. A piece of granite would no be so, for the different coloured bits are different minerals and chemistry.
What determines the size of the crystals that form in a sample of granite?
Crystal size in igneous rock is predominately a factor of time spent in cooling from lava or magma. Samples with relatively large crystals are the result of the magma having spent a longer amount of time at ideal crystal forming temperatures for each mineral present.
What determines the size of the crystal that form in a sample of granite?
Crystal size in igneous rock is predominately a factor of time spent in cooling from lava or magma. Samples with relatively large crystals are the result of the magma having spent a longer amount of time at ideal crystal forming temperatures for each mineral present.
There are different sizes of these in different igneous rocks?
Different igneous rocks have different crystal sizes because they have cooled at different rates. Those with larger crystals have cooled at a slower rate. A single rock sample can have varying crystal sizes because there are different minerals within it. It is consistently the Quartz crystals in Granite which cool fastest, leaving less space for the Mica, which forms later. This means that the Quartz crystals are larger than others in the rock, resulting in an inconsistency in size.
