What is spina bifida? Spina bifida is a neural tube defect that develops during the first month of pregnancy when the spinal column does not close completely. What are the effects of spina bifida? The effects of spina bifida are different for every person.
Tsavorite or tsavolite is a variety of the garnet group species grossular, a calcium-aluminium garnet with the formula Ca3Al2Si3O12. Trace amounts of vanadium or chromium provide the green color.
Diorite is a plutonic rock that is something between granite and gabbro. It consists mostly of white plagioclase feldspar and black hornblende. Unlike granite, diorite has no or very little quartz or alkali feldspar. Unlike gabbro, diorite contains sodic -- not calcic plagioclase.