1.Mineral A described in the rock is 2. Mineral B described in the rock is 3. Mi
ID: 801795 • Letter: 1
Question
1.Mineral A described in the rock is
2. Mineral B described in the rock is
3. Mineral C described in the rock is
4. What is the rock type of this sample?
sedimentary rock
igneous rock
metamorphic rock
5.The crystalline texture of this rock is called
6. Based on the texture of the rock, what can you determine was the rate that the mineral crystals formed (aka the crystallization rate; Slow crystallization, fast crystallization, two rates of crystallization, first slow then fast)? Explain your reasoning on 1-2 sentences.
a)sedimentary rock
b)igneous rock
c)metamorphic rock
Explanation / Answer
Answer 1:
The mineral A is Muscovite (white flaky mineral)
Answer 2:
The mineral B is Quartz (white color)
Answer 3:
The mineral C is Orthoclase (pink color)
Answer 4: It is an igneous rock
Answer 5: It has pegmatitic texture
Answer 6: It represents slow rate of crystallization due to presence of phanetic size crystals, however pegmatite rock forms at end of crystallization.
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