.  On the website https://seg.georockme.com/unknowns by Scott Brande, from the Unknown Samples page, click on the sample number (A01, A03, A05, etc…).  This will take you to the individual sedimentary rock webpage with the physical properties of the sample explained.  By scrolling down on the page, be sure to watch the videos on the webpages:  Whole Rock Video & Hi-Rez Images - Can you determine the size, shape and sorting of the grains? Do you see any fossils? HCl Acid Test – does it fizz when HCl acid is applied? Hardness Test – does it scratch the glass? Review your minerals lab to see which minerals scratch the glass, and which do not. Combustibility - Does it ignite under a flame? Sedimentary Rocks Table Sample # Clastic or Chemical/ Biochemical Grain Composition ID minerals, if possible Grain Shape Angular Rounded Grain Size Gravel (>2 mm) Medium sand Mud (< 1/16mm) Grain Sorting Poorly sorted Well sorted Special Features Depositional Environment See Table 1:  Beach, river, glacier, etc.. Sedimentary Rock Name Use Figure 4 to find the name of the sedimentary rock A01                     A03                     A05

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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.  On the website https://seg.georockme.com/unknowns by Scott Brande, from the Unknown Samples page, click on the sample number (A01, A03, A05, etc…).  This will take you to the individual sedimentary rock webpage with the physical properties of the sample explained.  By scrolling down on the page, be sure to watch the videos on the webpages: 

  • Whole Rock Video & Hi-Rez Images - Can you determine the size, shape and sorting of the grains? Do you see any fossils?
  • HCl Acid Test – does it fizz when HCl acid is applied?
  • Hardness Test – does it scratch the glass? Review your minerals lab to see which minerals scratch the glass, and which do not.
  • Combustibility - Does it ignite under a flame?

Sedimentary Rocks Table

Sample #

Clastic or

Chemical/ Biochemical

Grain Composition

ID minerals, if possible

Grain Shape

Angular

Rounded

Grain Size

Gravel (>2 mm)

Medium sand

Mud (< 1/16mm)

Grain Sorting

Poorly sorted

Well sorted

Special Features

Depositional Environment

See Table 1:  Beach, river, glacier, etc..

Sedimentary

Rock Name

Use Figure 4 to find the name of the sedimentary rock

A01

 

 

 

 

 

 

 

 

 

 

A03

 

 

 

 

 

 

 

 

 

 

A05

 

 

 

 

 

 

 

 

 

 

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