12PK Raw Red Sandstone, Sedimentary Rock Specimen - Approx. 1"- Geologist Selected & Hand Processed - Great for Science Classrooms - Eisco Labs 12 auspowers_batchfour 1s Count the highest frequency:

1s Count the highest frequency: 20hz Use environment temperature: - 5c--40 °c Count the minimum pulse width: 10ms Size: 64 x 38 x 38 mm Hole size: 61 x 36 mm Contact on maximum resistance: ≤10kΩ Open contact minimum resistance: ≥500kΩ Net Weight: 0

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12PK Raw Red Sandstone, Sedimentary Rock Specimen - Approx. 1"- Geologist Selected & Hand Processed - Great for Science Classrooms - Eisco Labs 12 auspowers_batchfour 1s Count the highest frequency:12PK Raw Red Sandstone, Sedimentary Rock Specimen Approx. 1" Geologist Selected & Hand Processed Great for Science Classrooms Eisco Labs Product Features RED SANDSTONE Sandstone is made up of well sorted and well rounded grains of quartz. This indicates that the clasts in the rocks have traveled a long distance from their source and were heavily eroded along the way. This sample is red due to the inclusion of iron in the chemical structure of the