C. quartz
15. Which of the following best suits the definition of a mineral?
A. Clastic and mafic
C. naturally occurring and crystalline
B. foliated and amorphous D. organic and solution
16. Which of the following properties may vary for different samples of a given mineral?
A. color
C. luster
B. hardness D. streak
17. Which minerals has a resinous luster?
A. calcite
B. diamond
D. sulfur
18. Which of the following is a physical property of minerals?
A. Chemical make-up C. fracture
B. bonding formation
D. viscosity
19. Which carbonate mineral reacts readily with cool, dilute hydrochloric acid to produce
visible bubbles of carbon dioxide gas?
A. Calcite C. Plagioclase
B. Gypsum D. Quartz
20. What is the hardest known mineral on earth?
A. Diamond C. Native gold
B. Muscovite D. Silicate
21. Which common mineral is composed entirely of silicon and oxygen?
A. Calcite C. Olivine
B. Diamond
D. Quartz
22. What characteristics of a mineral refers to resistance to abrasion?
A. cleavage
C. luster
B. hardness D. streak
23. Which mineral is easily soluble in water at room temperature conditions?
A. Diamond C. Olivine
B. Halite
D. Talc
24. Which element is the most abundant in the Earth's crust by weight?
A. Carbon C. Oxygen
B. Chlorine D. Sodium
25. Which one of the following is NOT true for minerals?
A. They may be liquid, solid, or gas form.
B. They have a specific, internal, crystalline structure.
C. They have a specific, predictable chemicalcomposition.
D. They can be identified by characteristic physical properties.
Write your answers in the boxes. (USE CAPITAL LETTERS ONLY)​