Photos and information about 80 common rock-forming, ore and gemstone minerals from around the world.
We Use Minerals Every Day! Every person uses products made from minerals every day. The salt that we add to our food is the mineral halite. Antacid tablets are made from the mineral calcite. Rubies and sapphires are colored varieties of a mineral named corundum. It takes many minerals to make something as simple as a wooden pencil. The "lead" is made from graphite and clay minerals, the brass ...
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Fluorescent minerals: One of the most spectacular museum exhibits is a dark room filled with fluorescent rocks and minerals that are illuminated with ultraviolet light. They glow with an amazing array of vibrant colors - in sharp contrast to the color of the rocks under conditions of normal illumination. The ultraviolet light activates these minerals and causes them to temporarily emit visible ...
Home » Minerals » Quartz Quartz A ubiquitous mineral with an enormous number of uses Article by: Hobart M. King, PhD Quartz crystals: Herkimer "Diamond" quartz crystals. A clear, "rock crystal" variety of quartz.
The Most Abundant Minerals in Earth's Crust: Known as the "common rock-forming minerals", they are minerals present at the time of a rock's formation and are important minerals in determining the rock's identity. Relative abundance percentages from Ronov and Yaroshevsky; Chemical Composition of the Earth's Crust; American Geophysical Union Monograph Number 13, Chapter 50, 1969.