1 / 9

Igneous rocks have “ Intergrown Mineral Crystals”

Finding Mineral Composition in Igneous Rocks using Page 6 of the ESRT Run the slide show to go through the steps to finding the mineral composition of igneous rocks. When done, complete the matching page in your handout. Igneous rocks have “ Intergrown Mineral Crystals”. Intergrown.

booker
Download Presentation

Igneous rocks have “ Intergrown Mineral Crystals”

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Finding Mineral Composition in Igneous Rocks using Page 6 of the ESRTRun the slide show to go through the steps to finding the mineral composition of igneous rocks. When done, complete the matching page in your handout.

  2. Igneous rocks have “Intergrown Mineral Crystals”

  3. Intergrown

  4. Intergrown

  5. Not Intergrown

  6. The percentage of each mineral in an igneous rock can be found using the chart below.

  7. A rock like GRANITE can have a changing mineral composition As you move left to right across the granite box, the amount of each mineral changes. On the right side, the sample of granite would only have a tiny bit of potassium feldspar. On the left side of the granite box, potassium feldspar makes up most of the rock.

  8. Picking a point and drawing a line down will help you to find the amount or percent of each mineral in that sample of rock. You can then find the mineral percentages by sliding the paper down and measuring the % using the labeled y-axis. The percentage of each mineral can be found by using a separate piece of paper and marking the width of each mineral. 40% quartz 20 % Plagioclase feldspar 20% potassium feldspar

  9. Once you get all the percentages, you can add them up and the sum should be 100% They add up to 100% 20% 40% 20% 10% 10%

More Related