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Mineral Variety

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Mineral Variety 

individual minerals united by their most important characteristics into a single mineral species but distinguished by the existence of elements in their chemical (elemental) composition that are capable of isomorphically replacing one species-forming element or group of elements. For example, molybdoscheelite Ca[(W, Mo)O4] is a variety of scheelite Ca[Wo4]. Mineral varieties are sometimes identified by other, purely external characteristics, such as color, diaphaneity, and shape. Varieties of quartz (rock crystal, amethyst, morion, chalcedony), hematite (iron glance, red ocher), and corundum (sapphire, ruby) are identified by such external characteristics.
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But nowadays people do not make the value distinction by the mineral variety in the trade.
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Table1: The six industrial asbestos minerals Regulatory name Non fibrous Mineral mineral variety group Chrysotile Antigorite and lizardite Serpentine Crocidolite Riebekite Amphibole Tremolite Tremolite Amphibole Actinolite Actinolite Amphibole Antophyllite Antophyllite Amphibole Amosite Cummingtonite-Grunerite Amphibole Regulatory name Formula Chrysotile [Mg.
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Despite moves to serve up tap water across Whitehall and even in the House of Lords, the Commons will continue buying a mineral variety from Hampshire.
MPs on the bottle! by Huddersfield Daily Examiner (Huddersfield, England)
 
 
 
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