11. About the petrographic , Day23 is one kind of method procedure used for the Hazor sherds. 12. Viewing under a petrographic microscope, the crystals contains a scattering of minute bubble-like inclusions. 13. Only extensive petrographic analyses can help to prove this and perhaps pinpoint some possible location for such centers. 14. Michel-L�vy pioneered the use of birefringence to identify minerals in thin section with a petrographic microscope. 15. The authors of the above study support the identification of Tunip as Tell Asharneh based on petrographic analysis. 16. Based on chemical and petrographic data, the lavas formed from water-poor source material at depth. 17. Petrographic and geochemical analyses of varioles demonstrates that they can be the result of one of three possible processes.18. A later expedition and subsequent petrographic and other laboratory analyses of samples of the stone balls confirmed this suspicion. 19. The mineral was first described in a petrographic study of a sample of a mafic diatreme at Coyote Peak. 20. The next year Marvin and Kring documented the petrographic analysis of two impact melt samples collected within the crater rim.
