2. If you consider it as one mineral, feldspar is the most common mineral and quartz comes in second, especially when you consider the whole crust, continental plus oceanic crust. Feldspar is called a group of minerals only for the convenience of geologists.he most common mineral of the Earth's continentsâthe world we spend our time inâis quartz, the mineral SiO 2. Nearly all the sand in sandstone, in the deserts of the world and on its riverbeds and beaches is quartz.
Transabdominal Ultrasound. A transabdominal ultrasound is used to look at the pelvic organs. Gel is placed on your abdomen. Then a small, handheld unit called a transducer is gently moved around to view the pelvic organs. The transducer sound waves make a picture on the TV screen.
Imaging tests can identify abnormalities and help doctors diagnose conditions. A transvaginal ultrasound, also called an endovaginal ultrasound, is a type of pelvic ultrasound used by doctors to examine female reproductive organs. This includes the uterus, fallopian tubes, ovaries, cervix, and vagina. âTransvaginalâ means âthrough the vagina.â This is an internal examination. Unlike a regular abdominal or pelvic ultrasound, where the ultrasound wand, or transducer, rests on the outside of the pelvis, this procedure involves your doctor or a technician inserting an ultrasound probe about two or three inches into your vaginal canal.