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Electrum Mineral Facts: Chemical Formula: Au(Ag) Gold and Silver alloy, more than 20% silver by weight. Colors: Pale metallic gold, streak is the same.
Detailed description, properties and locality information guide about the copper mineral bornite peacock ore.
Hematite is the most important ore of iron and it has been used by people as a pigment for at least 40,000 years. Learn about the uses and properties of the mineral
Rhodochrosite (whose name means rose-colored) is a very attractive mineral with an absolutely one-of-a-kind, beautiful color. Although it can be an ore of manganese
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The physical properties of silver make it suitable for a wide variety of uses. It is identified as a native element, a mineral, a natural alloy and a byproduct of ore
Chromium is a hard, bluish metallic element (Cr) with an atomic number of 24. In the mid-1700's, chemical analysis of a mineral from Siberia showed that it contained
Mining is the extraction of valuable minerals or other geological materials from the earth usually from an orebody, lode, vein, seam, reef or placer deposits.
Detailed description, properties, and locality information guide about the copper ore mineral chalcopyrite.
Excalibur Mineral Corporation is a complete mineralogist's heaven! Excellent quality mineral specimens, microscopes, UV lamps, Photographic Guide to Mineral Species
Very Large Mineral specimens from classic mineral occurrences worldwide. Thumbnail mineral previews linked to high quality photographs & description. New minerals are
Calcite Group. Calcite-Rhodochrosite Series and Rhodochrosite-Siderite Series. Commonly occurs as a primary gangue mineral in moderate- to low-temperature
MINING . This page primarily focuses on metallurgical mining, though many of the terms, processes, and concepts are the same within the non-metallurgical extraction
3.7.17 3 : Sulphides, Selenides, Tellurides, Arsenides and Bismuthides (except the arsenides, antimonides and bismuthides of Cu, Ag and Au, which are included in
Characteristics Physical properties. Zinc is a bluish-white, lustrous, diamagnetic metal, though most common commercial grades of the metal have a dull finish. It is
In the rocky hills of northern Mexico, thickly covered with prickly desert brush, an area rich with minerals and mining history is meeting modern technology.
Collection of weekly news and commentaries from John Betts, lecturer, author, photographer, mineral collector, and mineral dealer. Practical everyday advice for
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