Near Highway 72, there is a shiny rock that breaks into plates. Layering is easi
ID: 804211 • Letter: N
Question
Near Highway 72, there is a shiny rock that breaks into plates. Layering is easily seen and there are three visible minerals that can be made out.
A. A shiny mineral that is dark in color that can easily be peeled off into sheets.
B. A second shiny mineral that can also be peeled off into sheets but is light in color
C. A translucent mineral that is glassy and fractures.
1. What is mineral A in this sample?
2. What is mineral B in this sample?
3 What is Mineral C in this sample?
4. What is the rock name of this sample?
5.How did this sample form? Be sure to refer to the directions to ensure that all information is included for a complete answer and keep your answer to three sentences or less.
Explanation / Answer
mineral A might be biotite
mineral B might be muscovite
mineral C might be quartz
the composition of magma and layering indicates the rock is schist
5) the rock is formed by the continuous increasing metamorphism of a sedimentay rock called shale, as the gade of metamorhism increases the shale turns into slate ,, phyllite, and then schist
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