1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
daser333 [38]
3 years ago
6

An extraordinarily beautiful purple - blue gemstone (typically found in only one country in Africa), with a hardness close to or

less than 7.0 that is often formed by heat treatment of a brownish or greyish silicate mineral is a gem variety of
1) zoisite
2) cordierite
3) thulite
4) tourmaline
5) feldspar
Geography
1 answer:
storchak [24]3 years ago
5 0

Answer:

4) tourmaline

Explanation:

  • It is a gemstone that is found on the African continents and is made pos the silica materials and has compounds of the aluminum and iron and the potassium lithium and the sodium and this is classified as a semi-precious stone. The metamorphic rocks and the sandstone consists of these minerals and the colors of the gemstone cane alter by the heat treatment.
You might be interested in
what kind of stress forms mountains resulting from large blocks of rock squeezing together when two tectonic plates collide
dimaraw [331]
The three main type of stress are : Compression, Tension, and Shear stress.  Compression squeezes and shortens rock while Tension stretches and pulls rock, making it thinner.  <span>Shear stress distorts a body by pushing parts of the body in opposite directions. Sheared rock bends, twists, or breaks apart and slides past neighboring rock. So, Compression stress is the stress that forms mountains resulting from large blocks of rock squeezing together.  </span>
5 0
3 years ago
Describe how the type of asexual reproduction can help the organism reproduce quickly
Afina-wow [57]

It is certainly the most efficient system of reproduction. 
It doesn't require dating, dinner, movies, courtship, etc.,
and it doesn't even require locating another compatible,
cooperative individual, or even knowing anybody else. 
It eliminates all of the preliminaries, and cuts straight to the chase.
Even headaches are irrelevant.

3 0
3 years ago
Here is a diagram of a transform fault.
34kurt

Answer:

A. On Earth's surface, directly above the initial rock slippage.

Explanation:

I took the test got the answer right.

6 0
2 years ago
Read 2 more answers
Which city has the largest population in the world?
Effectus [21]
Tokyo/Yokohama is city with the largest population in the world. It has over 33 million people.
7 0
3 years ago
Read 2 more answers
Due to Australia’s location in the Southern Hemisphere, which of these months is part of its winter
KiRa [710]
Which are the months?
7 0
3 years ago
Read 2 more answers
Other questions:
  • About 90% of Earth's ice is found in _____.
    7·2 answers
  • What would likely happen to a boulder in the path of a glacier?
    6·1 answer
  • Which is the following is an important reason for large pockets of urban poor? This is for South America
    12·1 answer
  • What is Mass? write the difference between Mass and Weight?​
    10·2 answers
  • Which of the following is a renewable resource? <br> a. coal <br> b. wind <br> c. gold <br> d. oil
    14·1 answer
  • How does melting glaciers and rising sea levels affect living things around it? What is the impact on people and the environment
    13·1 answer
  • Is a smartphone a need or a want? In a carefully constructed paragraph, explain your thinking about the processes that bring a c
    12·1 answer
  • Express 4382.93 in standard form​
    5·1 answer
  • Hey i need help asap.
    5·1 answer
  • Mr. Rosenberger asked his students to use the distributive property to rewrite the expression 18 (24) by using friendlier number
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!