Natural corundum, Ruby , Abrasive grain
Natural corundum, Ruby , Abrasive grain
Conclusion
During the study of this batch of samples, the following was revealed: crystals of natural origin were provided, the color is reddish-brown, the hardness on the Mohs scale is 9 units, the density is 4 units. Composition Corundum (Al2O3 oxide), which is a natural ruby, in relation to granite chips. The grain size of the composition is 500/400 - 50-40, mainly represented by whole crystals.
The research was carried out using a stereomicroscope "Gemolite"
Inclusions - rutile, apatite, pyrrhotite.
Recommended field of application for the manufacture of tools on metal bundles designed to work in difficult conditions.
QUALITY TABLE IN THE RATIO OF TOTAL WEIGHT:
[Natural ruby | 94.1%]
[Granite | 5.9%]