21264 - Huge Complete NWA L-H Type Unclassified Ordinary Chondrite Meteorite 495g Spinosaurus collections The quartz is heated to

The quartz is heated to 871 °C (1600 °F) in a vacuum

Under polarized-light microscope (crossed light)

It does not have any type of restoration or repair

Beautiful sand dollar urchin

It has small fractures that have been glued and  filled

21264 - Huge Complete NWA L-H Type Unclassified Ordinary Chondrite Meteorite 495g Spinosaurus collections The quartz is heated toThese meteorites were found in the Saharan Desert in Northwest Africa, likely by nomads. In order to classify them it would be necessary to cut off a section for analysis. Although they are exceedingly rare when compared to terrestrial rocks, these are the most abundant type of meteorite and are referred to as common chondrites. H and L (designating the amount of metal contained) type chondrites have been already extensively studied. Composed largely