Mineral ID Lab JCC - GEL111 Geology Name Chapter 4 Minerals Date Mineral Identification Although nearly 2500 minerals are know to occur within Earth's

Mineral ID Lab JCC - GEL111 Geology Name Chapter 4 Minerals...

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GEL111 – Geology Name: Chapter 4: Minerals Date: Mineral Identification Although nearly 2500 minerals are know to occur within Earth's crust, most are rare, with only about 100 occurring in abundance. Of those 100 minerals, 15 make up the common rock-forming minerals and some of the remainder has some economic value. Procedures : Step 1 Using the streak plate in the mineral kit, determine whether the mineral shows a streak (if it is harder than 5.5 it won’t) or if it is colored or white. Step 2 Determine the hardness of your mineral. Using a glass plate, your fingernail or a nail, see if the mineral scratches it or gets scratched. Be careful; make sure the glass is on a table. Do NOT hold it in your hand. Firmly grasp your mineral and draw it over the glass. Use your fingernail to feel if the glass is scratched. Step 3 Determine the luster (metallic or nonmetallic) of your mineral. If it is non- metallic, determine the color of the mineral. Step 4 Your choices will be narrowed down, using the attached chart. Determine which specific properties match up with your mineral and name the mineral. You may be able to see if the mineral shows cleavage – if you think it does, check off the box! Once you think you’ve identified all 15 minerals according to the chart, raise your hand and I will come and check your results. / var/filecabinet/temp/converter_assets/80/89/8089360fb551ff0dfaabf4632fd1992690919c3e. doc 1
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You should follow the LAB REPORT template and list the minerals by number and name upon completion of this lab. Answer all questions, including the mineral identifications on a Google Doc and share with me by next class!
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  • Fall '16
  • Wanda Roberts
  • Mineralogy, Mineral Characteristic Chart

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