This is a picture that shows another the rock that also surrounds the active min

Question

This is a picture that shows another the rock that also surrounds the active mining site and if found in the mine is considered waste rock. It is crystalline with visible individual crystals. The rock is dominantly black and white and shows alignment of the crystals and the alternating black and white bands.

Mineral A: Glassy luster, clear to milk white in color. Very hard and conchoidal fracturing

Mineral B: Shiny, black with thin sheets

Mineral C: White and opaque. Glassy luster and some larger minerals appear to have a rectangular shape.

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

sedimentary rock

igneous rock

metamorphic rock

Explanation / Answer

minearl A quartz

mineral B black color and thin sheets suggest that it as a biotite

mineral C calcite

alternating light and dark color banding suggest that it as a metamorphic rock.

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