Controlled Substance Utilization Review and Evaluation System. CURES 2.0 (Controlled Substance Utilization Review and Evaluation System) is a database of Schedule II, III and IV controlled substance prescriptions dispensed in California serving the public health, regulatory oversight agencies, and law enforcement.
Zircon (/ËzÉrkÉn/ or /ËzÉrkÉn/ ; including hyacinth or yellow zircon) is a mineral belonging to the group of nesosilicates. Its chemical name is zirconium silicate and its corresponding chemical formula is Zr SiO4.ircon is ubiquitous in the crust of Earth. It occurs as a common accessory mineral in igneous rocks (as primary crystallization products), in metamorphic rocks and as detrital grains in sedimentary rocks. Large zircon crystals are rare.
If zirconia is a single crystal form, then it is the cubic zirconia gemstone that we discussed earlier. Lesson Summary. Zirconium is a metal that has 40 protons in its nucleus, so it is the 40th element on the periodic table. It has the chemical symbol Zr. It was discovered by Martin Heinrich Klaproth in 1789 and first isolated by JÃ¶ns Berzelius in 1824.