Earth Science lab worksheet

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Nylffn1997

Science

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Metamorphic rocks form when other pre-existing rocks change under extreme heat or pressure. Depending on the environment of their formation, they may be foliated or non-foliated. Most metamorphic rocks are classified based on whether or not they display foliation.

In this lab, you will have the chance to see some metamorphic rocks, to identify their texture, and to assign a name to them. You will need to download the blank data sheet to enter your lab observations.

rock lab 2.PDF 

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Review the chart below and use it to complete the data chart that follows by filling in the data cells with information about metamorphic rock samples 20 through 24. Sample Number 20 Protolith (Parent rock) sandstone Effervesces Under Acid? no Main Minerals in the Sample quartz 21 limestone yes calcite 22 shale or granite no mica minerals 23 shale or granite no 24 shale no quartz, feldspar, mica minerals clay minerals Sample Number Your description of texture (foliated or non-foliated) and other notable features 20 21 22 23 24 © KC Distance Learning Sample Name
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