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Change: gel hardenhardens to a solid that was not the hardness of an agate (seven on the Mohrs scale). The next series of experiments will be carried out with higher concentration of silica with varying temperature and pressure. The goal will be to create a laboratory banded. agate.   View changes from previous version. (Word count: 1449) View all updates.

Change:SimpleSimply putput; they love life. They love people who love life. And they are weird fun folks!Bill Your "Reader's Digest" Version of Basic Mineralogy What is the difference between a rock and a mineral? Don't you wish someone had asked that question in school?* Pronunciation   View changes from previous version. (Word count: 5716) View all updates.

Change:2.Peterson2. Peterson Field Guides- Rocks and Minerals, by Frederick H. Pough3. Rocks and Minerals, by Rich M. Pearl 4. National Audubon Field Guide to Rocks and Minerals (It comes with a vinyl cover so that it can be carried into the field without damaging the book.)If   View changes from previous version. (Word count: 4649) View all updates.

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Change::If you're new to hunting petoskey's, hunt along the edge of the beach where the stones are wet. It will be easier to see their "eyes". Location #2: (Local beach, park, etc)General description: How to get there: Grade this location: (A to F): GPS coordinates:   View changes from previous version. (Word count: 459) View all updates.