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099-Serpentinite $12.00
Mystery includes rock, fossil, or mineral sample and Mystery questions with teaching instructions.

SAMPLES:
— Serpentinite from Huntinghill Quarry, Rockville, Maryland, clearly showing the three minerals, garnet, diopside and talc

TEACHING OBJECTIVES:
— To introduce the rock type serpentinite
— To encourage use of maps and to show where certain rock types occur
(i.e. serpentinite in Rockville, MD)
— To show the three minerals, garnet, talc and diopside
— To introduce the idea of one mineral (talc), 'growing' at the expense of another (diopside) -- which is the concept of mineral replacement.

GRADES 5-12
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