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The collection of 75 rock and mineral specimens demonstrates major rock-forming minerals, the scale of hardness and recognized physical properties. The unit includes 75 specimens, each size 1-1/4”x 3/4”, a streak plate, magnet, magnifier and compartmented container.
The collection of 75 rock and mineral specimens demonstrates major rock-forming minerals, the scale of hardness and recognized physical properties. The unit includes 75 specimens, each size 1-1/4”x 3/4”, a streak plate, magnet, magnifier and compartmented container.
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