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Why are aluminosilicates only found in meta-sedimentary rocks?

Forums: Geology, Minerals, Petrology, Igneous, Metamorphic
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blinlim
 
Reply Fri 24 Apr, 2015 03:36 pm
Question above. The aluminosilicates I'm referring to are sillimanite, kyanite, staurolite, and andalusite. I think it has something to do with the aluminum content of sedimentary rocks.
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Type: Question • Score: 2 • Views: 1,072 • Replies: 1
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farmerman
 
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Reply Fri 24 Apr, 2015 03:44 pm
@blinlim,
think. What aluminosilicates are found in igneous rocks and what hppens to them on chemical weathering?
Hint: think feldspar
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