Distinguishing Particles & Crystals in Rock Identification

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SUMMARY

This discussion focuses on the distinction between particles and crystals in rock identification. Particles are defined as individual pieces that combine to form rocks, while crystals are characterized by a structured arrangement of atoms. Visual identification techniques include observing the fizzing reaction of rocks with acid, which can indicate the presence of certain minerals. The conversation emphasizes the importance of recognizing these differences for accurate rock classification.

PREREQUISITES
  • Basic understanding of mineralogy
  • Knowledge of rock formation processes
  • Familiarity with acid testing methods in geology
  • Visual analysis skills for mineral identification
NEXT STEPS
  • Research the properties of common rock-forming minerals
  • Learn about the crystallography of minerals
  • Study the acid reaction tests for carbonate minerals
  • Explore online resources for rock identification techniques
USEFUL FOR

This discussion is beneficial for geology students, rock hounds, and anyone involved in mineral identification and classification. It provides foundational knowledge for distinguishing between different rock types based on their composition.

Sharifullah
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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


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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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How would you define 'crystal' from a visual analysis? What might a 'fizzing' reaction imply for any given rock?
 
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.
 

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