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202-Granite, radiometric dating $8.00
Mystery includes rock, fossil, or mineral sample and Mystery questions with teaching instructions.

SAMPLE:
Coarsely crystalline granite or pegmatite showing large, pink orthoclase crystals (pictured), and one or more of: black hornblende (pictured), light gray muscovite flakes, and/or dark brown biotite flakes. See picture to help identify the minerals in your sample


TEACHING OBJECTIVES:
-- To introduce the radioactivity of elements contained within minerals and how it is used to determine the age of rocks containing those minerals
-- To introduce the notion of half-life of a radioactive element
-- To provide the opportunity to discuss the age of the earth determined by radioactive decay

GRADES 5-10		 202.JPG
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Ruth Deike
Rock Detective Geoscience Education
395 Deer Run Drive
Nellysford , VA 96080
Phone: 434-263-3737

EMAIL:

 
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