Common examples of sulfide and sulfate minerals,respectively,are ____.
A) galena and pyrite
B) gypsum and anhydrite
C) galena and gypsum
D) galena and hematite
E) fluorite and pyrite
Correct Answer:
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Q41: Amorphous minerals are
A) without form.
B) lacking an
Q42: Covalent bonds differ from ionic bonds in
Q43: Cleavage is defined as
A) planes of fracture
Q44: The hardest,most chemically inert common rock-forming mineral
Q45: Placer deposits form because
A) gold is lighter
Q47: In different specimens of the same type
Q48: Isotopes of the same element have _.
A)
Q49: Which of the following are all examples
Q50: The relatively massive,positively-charged particles in the nucleus
Q51: For a neutrally-charged atom to become a
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