This is based on the number of localities entered for mineral species and is therefore slanted towards minerals interesting to collectors with less coverage of common rock-forming-minerals so it does not give an undistorted distribution of Oxygen mineral species.
It has been legal to grow medical marijuana since 2010 in Arizona, which has about 88,000 patients qualified to obtain it from state-approved dispensaries. Patients must live more than 25 miles from a dispensary to grow their own pot. But there is a move to put a proposal to legalize marijuana on the ballot in 2016.
In four states, Alaska, Colorado, Oregon and Washington, the sale and possession of marijuana is legal for both medical and non-medical use; and Washington DC has legalized personal use but not commercial sale.n Alaska, cannabis was decidedly legal (under state, but not federal, law) for in-home, personal use under the Ravin v. State ruling of 1975. This ruling allowed up to two ounces (57 g) of cannabis and cultivation of fewer than 25 plants for these purposes.