Common examples of sulfide and sulfate minerals, respectively, ...

[ssal]

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

Question 2

Cleavage is defined as:
  a. planes of fracture resulting from weak bonds.
  b. smooth, flat reflective surfaces.
  c. surfaces of smooth, curved fracture.
  d. planes of fracture resulting from strong bonds.
  e. none of the above

[sokh]

Answer to Question 1

C

Answer to Question 2

A

[ssal]

Excellent

[nothere]

Thanks for the timely response, appreciate it