leaching. Phosphate leached from guano phosphatizes the underlying rocks in some areas, forming apatite where the host rock is limestone and forming aluminum- or aluminum-iron-phosphate minerals where the underlying rock is a silicate. Individual deposits of both igneous apatite and marine phosÂ­
Medicare Part B (Medical Insurance) covers diagnostic hearing and balance exams if your doctor or other health care provider orders these tests to see if you need medical treatment. Medicare doesn't cover routine hearing exams, hearing aids, or exams for fitting hearing aids.
by David Luhman. I have not seen any reference to dental care benefits provided by Social Security. Medicare does not cover routine dental care or most dental procedures such as cleanings, fillings, tooth extractions or dentures. In rare cases, Medicare Part B will pay for certain dental services.In addition, Medicare Part A will pay for certain dental services that you get when you are in the hospital.edicare does not cover routine dental care or most dental procedures such as cleanings, fillings, tooth extractions or dentures. In rare cases, Medicare Part B will pay for certain dental services. In addition, Medicare Part A will pay for certain dental services that you get when you are in the hospital.