This rock is exposed on east facing side of Long Peak, known as the \"Diamond\".

Question

This rock is exposed on east facing side of Long Peak, known as the "Diamond". It has interlocking, randomly oriented, visible crystals of three mineral types

Mineral A: Black, shiny, and breaks into sheets

Mineral B: Pink in color, opaque, with a rectangular crystal shape

Mineral C: Translucent and very hard. Does not have any cleavage planes.

1. What is Mineral A?

2.What is Mineral B?

3. What is Mineral C?

4. What is the name of this rock?

5. How did sample this rock sample from Chasm lake form? Be sure to refer to the directions to ensure that all information is included for a complete answer and that it is presented in three sentences or less.

Explanation / Answer

1)      What is Mineral A?

Answer: Mica (mostly Biotite or muscovite) and it has basal cleavage, this means mineral can break in sheets.

2)      What is Mineral B?

       Answer: Feldspar (Orthoclase)

3)      What is Mineral C?

Answer : Quartz, It has no cleavage

4. What is the name of this rock?

                  Answer: Granite, it is a plutonic igneous rock.

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