More than 4,000 minerals are officially recognized, and up to 100 new ones are described yearly. Minerals are rocks or sand that have more than one element in their structure. Quartz, for example, is a mineral composed o... More » Science Earth Science Geology

Some foods that have minerals in them are red meats, dairy products, leafy green vegetables, nuts, seafood, whole grains and fortified cereals. There are two types of minerals that the body needs, namely macrominerals an... More » Food Food Facts

Most rocks are made of various types of minerals, but some are made of animal shells or compressed plant parts. Minerals are natural inorganic solids with a specific chemical composition. Crystals are expressions of the ... More » Science Earth Science Geology
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Crushing different minerals creates different types of limes, two of which are agricultural lime (calcium carbonate) and magnesite (magnesium carbonate). Other limes, such as burnt lime (calcium oxide), hydrated lime (ca... More » Science Earth Science Geology

Feldspar minerals include quartz, muscovite, orthoclase and plagioclase. They are usually light colored and igneous, which means they are formed in or around volcanoes. Feldspar minerals are the most common type of miner... More » Science Earth Science Geology

Soil is composed of minerals, water, air and organic matter. Soil is formed on the surface of the Earth, which can be referred to as the skin of the earth. More » Science Earth Science Geology

Some examples of ferromagnesian minerals in mafic rock include olivine, pyroxene and amphibole. Rocks containing pyroxene and amphibole often also contain feldspar, a non-ferromagnesian mineral. More » Science Earth Science Geology