Section 5.2 homework

An online crossword puzzle with 15 words. Play it free at AgileCrosswords.com.

Clues

diorite is a good example of a ________ igneous rock
rare ultra mafic rocks that can contain diamond and other minerals formed only under very high press
many of the minerals found in igneous rocks are resistant to __________
an extrusive igneous rock, has no visible mineral grains
light colored igneous rocks that contain quartz and feldspars and have high silica contents
some important metallic elements that are not included in common minerals are _____, copper, lead an
slices of rock so thin that light can pass through them. ~hint~ geologist use these to observe miner
rock texture characterized by large crystals surrounded by finer crystals of the same mineral
igneous rocks with low silica content, with very high levels of iron and magnesium
vein deposits of extremely large grain minerals that can contain rare ores such as lithium and beryl
_________ is a valuable mineral found in rare ultramafic rocks known as kimberlites
________ is among the most durable of igneous rocks
an intrusive igneous rock, may have crystals large than 1 cm
dark colored igneous rocks that are rich in iron and magnesium
ore deposits can exist as ________