Gurmeet singh Asked a Question
October 9, 2020 2:26 pmpts 30 pts
unstable. In view of the stability characters of the minerals, in most of the sedimentary rocks we find the minerals like quartz and muscovite whereas the presence of unstable minerals like augite, hypersthene etc. is rarely found. In general, the sandy rocks consist largely of stabler primary minerals, while the fine grained clayey materials are constituted mostly by the ferromagnesian silicates and feldspars.
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  • Rahul pandey Best Answer
    Answer: The last two lines convey that the sandstone mainly comprises stable minerals such as Quartz, muscovite, K-feldspar etc. It happens because sandstones commonly form by the ...
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  • Sajan sarthak sahoo thankyou
    1.Sandyrocks means in general view point the snadstone have stable quartz in it. 2.where as in clay like shale there must be PLAGIOCLASE component PLAGIOCLASE breaks down to ka...
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