Which two minerals define a felsic composition? A) Pyroxene and amphibole B) Muscovite and ...

Author Question: Which two minerals define a felsic composition? A) Pyroxene and amphibole B) Muscovite and ... (Read 73 times)

jman1234

Hero Member
Posts: 560

on: Jul 16, 2018

Which two minerals define a felsic composition?

A) Pyroxene and amphibole
B) Muscovite and biotite micas
C) Quartz and potassium feldspar
D) Plagioclase feldspar and biotite mica

Question 2

Peridotite is the main constituent of which part of the Earth?

A) Crust
B) Magma chambers
C) Rift zones
D) Upper mantle

kjohnson

Sr. Member
Posts: 330

Reply #1 on: Jul 16, 2018

Answer to Question 1

Answer: C

Answer to Question 2

Answer: D

Need homework help now?

Ask unlimited questions for free

Ask a Question

« previous next »

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

Despite claims by manufacturers, the supplement known as Ginkgo biloba was shown in a study of more than 3,000 participants to be ineffective in reducing development of dementia and Alzheimer’s disease in older people.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.