Rock and Mineral Review Test

62) Which lettered box could represent the rock conglomerate?

• E

• G

• C

• D

33) Which observation about the rock best supports this classification?

• The rock is composed of several minerals.

• The rock has a vesicular texture.

• The rock contains fragments of other rocks

• The rock shows distorted and stretched pebbles.

7) Which mineral can be found in all samples of rhyolite and andesite?

• pyroxene

• quartz

• biotite

• potassium feldspar

10. Which mineral might scratch the mineral fluorite, but would not scratch the mineral amphibole?

• brucite

• magnesite

• carnallite

• olivine

19. How are the minerals biotite mica and muscovite mica different?

• Biotite mica is colorless, but muscovite mica is not.

• Biotite mica contains iron and/or magnesium, but muscovite mica does not.

• Muscovite mica scratches quartz, but biotite mica does not.

• Muscovite mica cleaves into thin sheets, but biotite mica does not.

20. Which of the following elements is not found in Plagioclase Feldspar?

• Na

• Al

• Si

• Pb

21) Which two mineral samples most likely have a similar internal arrangement of atoms?

• galena and quartz

• galena and halite

• gold and halite

• gold and galena

28. What are the rock name and map symbol used to represent the sedimentary rock that has a grain size of 0.006 to 0.2 centimeters?

• 
• 
• 
• 

32. Most rocks that form from fragmental rock particles are classified as

• extrusive igneous

• intrusive igneous

• clastic sedimentary

• chemical sedimentary

34. Which process most likely formed a layer of the sedimentary rock, gypsum?

• precipitation from seawater

• solidification of magma

• folding of clay-sized particles

• melting of sand-sized particles