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Alenkasestr [34]
3 years ago
7

An unknown mineral specimen is not scratched by a penny and does not exhibit cleavage. The mineral is most likely to be _____

Geography
1 answer:
Svetradugi [14.3K]3 years ago
5 0

Answer:

Quartz

Explanation:

<u>Quartz is a resistant mineral whose hardness is 7, according to the Mohr's hardness scale</u>. It is made up of silicon and oxygen and very abundant on the earth's continental crust, after feldspar. It is a very hard mineral that crystallizes in the hexagonal system.

<u>It cannot be scratched by a copper penny and also cleavage is absent. They are the most stable rocks that resist weathering and erosion</u>.

Thus, it is a very important mineral that forms the majority of sedimentary igneous and metamorphic type of rocks.

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