Allochromatic mineral

From WebRef.org
Jump to navigationJump to search

Mineral that would be colorless if chemically pure, but which commonly exhibits a range of colors due to the presence of small quantities of one or more coloring elements. Chief among these elements are those having atomic numbers 22 to 29; namely, titanium, vanadium, chromium, manganese, iron, cobalt, nickel, and copper. Corundum, beryl, spinel, and quartz are examples of allochromatic gemstones. See also: idiochromatic mineral Anderson
Source: Dictionary of Mining, Mineral, and Related Terms


Sponsor: Real Estate Express helps you pass your real estate licensing exam on the first try with online exam prep. Get started today and save 30% with code START30 at checkout!