Which of the Following Is a True Statement About Minerals

question 18

Multiple Choice

Which of the following is a true statement about minerals?

• A) A total of 88 elements occur naturally in the Earth's crust
• B) Eight elements make up more than 98% of the crust
• C) The composition of a mineral can be expressed as a chemical formula such as SiO₂ for quartz
• D) Quartz would not have the same chemical formula anywhere else in the universe-its chemical formula is unique to Earth
• E) 3500 minerals are known on Earth

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