Distinguishing Particles & Crystals in Rock Identification

In summary, the conversation discusses the differences between particles and crystals in rock identification. The speaker defines particles as individual pieces that make up a rock and crystals as a proper arrangement of structural elements within the rock. They also mention that a visual analysis and fizzing reaction can help distinguish between the two. The speaker also asks for links to rock identification sites for further help.
  • #1
Sharifullah
11
0

Homework Statement


I saw a division in a rock identification chart given to me by a lecturer.It says, Rock made of particle or crystals.I was wondering wat is different in both of these two and how to distinguish between them and identify them


Homework Equations





The Attempt at a Solution


As for my knowledge, particle is an individual piece which integrates with others into a rock and crystal is a proper arrangement structural elements which is spread around forming rock.How do we see and distinguish between them.The identification is visual and things which could be used was an acid only to check whether it fizess with it or not.

Help appreciated.
 
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  • #2
How would you define 'crystal' from a visual analysis? What might a 'fizzing' reaction imply for any given rock?
 
  • #3
As crystal is arrangement of atoms in proper way therefore it could be identified as a separate unit cell that makes up the rock whereas, partilcles wouild be almost undistinguishable. Fizzing action helps in visually describing a rock type by using flow chart.any links to rock identification sites.
 

1. What is the difference between particles and crystals in rock identification?

The main difference between particles and crystals in rock identification is their size and shape. Particles are small, irregularly shaped fragments of minerals or rocks that make up a larger rock. Crystals, on the other hand, are larger and have a defined, geometric shape.

2. How can I tell if a rock is made of particles or crystals?

The best way to determine if a rock is made of particles or crystals is to examine it closely. Particles will appear as small, irregular pieces in the rock, while crystals will have a more defined, geometric shape. You can also use a magnifying glass or microscope to get a better look at the rock's structure.

3. What causes rocks to have particles or crystals?

Rocks can have particles or crystals depending on how they were formed. Particles are usually the result of weathering and erosion, where larger rocks are broken down into smaller fragments. Crystals are formed when minerals in a liquid or gas solidify and grow into a defined shape, usually in a process called crystallization.

4. Why is it important to distinguish particles and crystals in rock identification?

Distinguishing particles and crystals in rock identification is important because it can give us clues about how the rock was formed and what processes it has undergone. It can also help us identify the type of rock and its potential uses, as certain rocks with different structures may have different properties and purposes.

5. Can a rock have both particles and crystals?

Yes, it is possible for a rock to have both particles and crystals. These types of rocks are called clastic rocks and are formed from a mixture of particles and crystals that have been cemented together by natural processes. An example of a clastic rock is sandstone, which is made up of particles of sand and cemented together by minerals that form crystals.

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