This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Which minerals usually give mafic and ultramafic rocks their dark colors? A) plagioclase feldspar ... (Read 82 times)

leilurhhh

  • Hero Member
  • *****
  • Posts: 560
on: Jul 16, 2018
Which minerals usually give mafic and ultramafic rocks their dark colors?
 
  A) plagioclase feldspar and pyroxene
  B) amphibole and pyroxene
  C) olivine and pyroxene
  D) plagioclase feldspar and olivine

Question 2

A scientist identifies a rock sample as basalt. Why did he do so?
 
  A) He observed that the rock has a lot of silica, making it mafic.
  B) He observed that the rock has a lot of silica, making it ultra-mafic.
  C) He observed that the sample has little silica, making it felsic.
  D) He observed that the sample has little silica, making it mafic.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Ksh22

  • Sr. Member
  • ****
  • Posts: 297
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: C

Answer to Question 2

Answer: D


leilurhhh

  • Member
  • Posts: 560
Reply 2 on: Jul 16, 2018
Great answer, keep it coming :)

laurnthompson

  • Member
  • Posts: 334
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.

Did you know?

Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

The first dark spot observed on Uranus. Image obtained by the HST ACS in 2006. The first dark spot observed on Uranus. Image obtained by the HST ACS in 2006.
Vitamins and Minerals Vitamins and Minerals
Minerals are nonrenewable resources in limited supply Minerals are nonrenewable resources in limited supply
Sheeting and Exfoliation of Igneous Rocks Sheeting and Exfoliation of Igneous Rocks
Determining the Ages of Rocks Using Fossils Determining the Ages of Rocks Using Fossils
In 1969 a UC Berkeley group fired a carbon nucleus at a californium target. Give In 1969 a UC Berkeley group fired a carbon nucleus at a californium target. Give
Video: Introduction to Epilepsy

For a complete list of videos, visit our video library