• Geol. 115 Physical Properites of Gemstones

    Answers to thought exercises from this lesson: (If you don't understand why these are the correct answers, then it's time to email me for help!)

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  • tiger eye information pietersite, marra mamba,

    tigers eye, pietersite, marra mamba, binghamite, arizona tigereye, silkstone and tiger iron information

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  • Klerksdorp sphereWikipedia

    Klerksdorp spheres are small objects, often spherical to disc shaped, that have been collected by miners and rockhounds from 3 billion year old pyrophyllite deposits mined by Wonderstone Ltd., near Ottosdal, South Africa.

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  • Avoiding Fake JadesKalafut

    As described in the section on "fake jades", many minerals (especially green ones!) are sometimes described and sold as jade but are not, in fact jade.This page goes into more detail about the minerals and substances that are not jade, and offers suggestions for how to differentiate it from true jade.

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  • Alverton: West of Penzance (A History)

    Alverton: West of Penzance by Paul Mason. Ancient History "At Tredarvah (Alverton) a Bronze Age (c.3500 1200 BC) settlement of unknown form was discovered under salvage conditions in 1963.

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  • Iron oreWikipedia

    The Lower grade sources of iron ore generally require beneficiation, using techniques like crushing, milling, gravity or heavy media separation, screening, and silica froth flotation to improve the concentration of the ore and remove impurities.

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  • Excalibur Mineral CorporationCurrent List

    Current List: Each month, we offer an abbreviated selection of minerals from our inventory of over 200,000 samples. If you don't see what you're looking for here, or on our Recent Catalogs pages, or on our Rare Species lists, please request a special quote by mail, email, fax or telephone.

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  • Photos of Natural Copper Ore, Copper minerals,

    Bornite . Known as horseflesh ore by some miners, because of its fleshy pink color on fresh unoxidized surfaces. These surfaces quickly oxidize to multicolored iridescent colorsthis leads to the name of peacock copper ore.

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  • Journal of weekly news and commentaries about rocks

    lc John BettsFine Minerals, New York, NY Dealers of Fine Minerals and Natural Crystal Clusters since 1989. Journal of weekly news and commentaries about rocks and minerals and mineral collecting

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  • keystonetableExceptional Minerals

    MIN#Keystone 3. Rare specimen featuring light blue Celestine crystals sitting atop bright yellow Sulfur! This is an Italian classic, the likes of which I rarely see in the marketplace.

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    What you need is what we can do! In the future, Xinhai will continue to rely on three big supporting "technology, talents, management", adhere to the international development strategy, and concentrate on providing customers with modern, efficient, energy-saving mine overall construction and operational solution, to create international leading enterprises in mining industry.