An Igneous Rock with a Mixed Texture of Coarse Grains

question 17

Multiple Choice

An igneous rock with a mixed texture of coarse grains (phenocrysts) surrounded by fine crystals (groundmass) is termed ____________.

• A)porphyritic
• B)phaneritic
• C)aphanitic
• D)necrotic

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Definitions:

Wilhelm Konrad Roentgen

A German physicist who discovered X-rays in 1895, for which he received the first Nobel Prize in Physics in 1901.

X-ray

A form of electromagnetic radiation used in medical imaging to view the inside of the body, especially bones, to diagnose or monitor various conditions.

Marie Sklodowska Curie

A pioneering physicist and chemist who conducted groundbreaking work in radioactivity, and the first woman to win a Nobel Prize.

Retrograde Pyelogram

A urologic procedure in which the physician injects contrast into the ureters in order to visualize the ureters and kidney.