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A few inexpensive student-tested items that we recommend.

Dropper Bottle for Vinegar (or other dilute acid)
A drop of acid will tell you and your students whether the rock they have found is made of limestone (calcium carbonate), because it will  fizz.  These small dropper bottles are the safest w ...
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Glass Plate, Pkg of 10
These sturdy, thick glass plates are useful for determining mineral hardness.  The plate has a hardness of 5.5, so minerals (like quartz) harder than the glass will scratch it, while softer miner ...
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Magnifying Glass
These magnifiers are made of very clear plastic that provides an image magnified 3x.  They are about 2 1/2 inches in diameter with a smaller circular area close to the handle that is magnified 6x ...
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Streak Plate
These sturdy, white ceramic plates are standard size: 50 mm x 50 mm x 3 mm thick.  The color of a mineral's streak is an easy characteristic to determine, and often leads to a certain identificat ...
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Ruth Deike
Rock Detective Geoscience Education
395 Deer Run Drive
Nellysford , VA 96080

Phone: 434-263-3737



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