Accidental Exposure. Sometimes women take medication before they realize that they are pregnant. When this happens, they may worry about the effects of the medication on their unborn baby. The first thing a woman who is pregnant or who is planning on becoming pregnant should do is talk with her healthcare provider.
Corundum is found as a primary mineral in igneous rocks such as syenite, nepheline syenite, and pegmatite. Some of the world's most important ruby and sapphire deposits are found where the gems have weathered from basalt flows and are now found in the downslope soils and sediments.
A secondary source is one that gives information about a primary source. These sources contain second hand information that has already appeared in primary documents. In this source, the original information is selected, modified and arranged in a suitable format for the purpose of easy location by the users.