Labyrinth types: Daedalus can create unicursal Labyrinths commonly used as a tool for meditation and spiritual growth, just as it can Maze puzzles: Chartres replica, Classical, Extended Classical, Cretan, Man in the Maze, Extended Man in the Maze, Custom circuits.
Zircon is a zirconium silicate mineral. It is the principle source of the element zirconium (Zr) 1  usually small and inclusion-rich.  Zircon is highly resistant to weathering (maybe the most resistant of any mineral) This, and its high specific gravity, favor its concentration in placer deposits and alluvial gem gravels.
âZirChronâ â Virtual Zircon Analysis App As part of a series of online activities to teach the science of geochronology, weâve developed an on-line Javascript and HTML-based application that allows students to explore real LA-ICPMS and ID-TIMS data sets.