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

Author Question: The minerals andalusite, sillimanite, and kyanite all have the chemical formula, Al2SiO5. Explain ... (Read 66 times)

armygirl

  • Hero Member
  • *****
  • Posts: 556
on: Jul 13, 2018
The minerals andalusite, sillimanite, and kyanite all have the chemical formula, Al2SiO5. Explain how three different minerals can have the same chemical components and why this fact is important.

Question 2

The age of oceanic crust in the Pacific is asymmetric because ____.
 A)much of the crust in the eastern Pacific has been subducted
 B)spreading is faster on the east side of the ridge than on the west side
 C)the eastern Pacific collided with the Americas to form mountain ranges
 D)volcanism on the west side of the ridge has made the crust larger
 E)almost none of the crust in the eastern Pacific has been subducted


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

sultana.d

  • Sr. Member
  • ****
  • Posts: 320
Reply #1 on: Jul 13, 2018
Answer to Question 1

Even thought andalusite, sillimanite, and kyanite have the same chemical formula, they differ in crystal structure and other physical properties because each forms under a different range of pressures and temperatures and is thus reflective of a different metamorphic grade. For this reason, they are useful index minerals for metamorphic rocks that formed from clay-rich rocks.

Answer to Question 2

A


armygirl

  • Member
  • Posts: 556
Reply 2 on: Jul 13, 2018
Thanks for the timely response, appreciate it

kusterl

  • Member
  • Posts: 315
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

Many people have small pouches in their colons that bulge outward through weak spots. Each pouch is called a diverticulum. About 10% of Americans older than age 40 years have diverticulosis, which, when the pouches become infected or inflamed, is called diverticulitis. The main cause of diverticular disease is a low-fiber diet.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

Did you know?

Acute bronchitis is an inflammation of the breathing tubes (bronchi), which causes increased mucus production and other changes. It is usually caused by bacteria or viruses, can be serious in people who have pulmonary or cardiac diseases, and can lead to pneumonia.

Structure and function of a chemical synapse. Structure and function of a chemical synapse.
Chemical structures of hexoses Chemical structures of hexoses
Comparison of the chemical structures of psilocybin and LSD. Psilocybin (left) is derived from a mus Comparison of the chemical structures of psilocybin and LSD. Psilocybin (left) is derived from a mus
Selected Minerals Used for Pharmactherapy Selected Minerals Used for Pharmactherapy
Chemical structures of ester and amide local anesthetics. Chemical structures of ester and amide local anesthetics.
The CHRIS manual entry for toluene. Useful information includes response information, chemical and ... The CHRIS manual entry for toluene. Useful information includes response information, chemical and ...
Video: Cataract

For a complete list of videos, visit our video library