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On the founding of the Society of Economic Geologists in 1920, a cooperative arrangement between PUBCO and SEG made the journal the official organ of the Society, and PUBCO agreed to carry the Society's name on the front cover under the heading "Bulletin of the Society of Economic Geologists".

PUBCO and SEG continued to operate as cooperating but separate entities until 2001, when the Board of Directors of PUBCO and the Council of SEG, by unanimous consent, approved a formal agreement of merger.

There are a lot of other attractive and high quality display specimens in the update, so be sure to check out everything. Not only are these large specimens, some with crystal clear clarity, but the pieces all features excellent INSECT INCLUSIONS!

A few of the specimens host more than 100 individual insects.

You can see form the close up photos that there are some superbly well-preserved insects inside of each specimen.

We were really blown away not only by the size, but the fact that some of these pieces are literally water clear, which is not common for specimens over a few inches. Recently a discovery of unique and interesting specimens of purple Quartz was made in Indonesia.

Zinc, lead and silver often occur together in mineral deposits.

Ken Brook (SEG 2007 M) President Desert Ventures, Inc.

Tungsten has the highest melting point of all pure metals and together with its alloys is amongst the hardest of all metals.

Tungsten is found in Queensland, Tasmania, Western Australia and the Northern Territory.

李秋立,研究员,博士生导师。1977年出生于河北河间。1998年毕业于西北大学地质系,2003年于中国科学技术大学获博士学位。长期从事微区地质年代学研究,在离子探针上研发了多种副矿物微区原位U-Pb年龄测试方法,为解决超碱性岩类、碳酸岩类、陨石、碎屑沉积岩、中低温变质岩、矿床等定年难题提供了有效定年手段。在国内外学术刊物上共发表100余篇研究论文,其中82篇被SCI 收录,SCI 引用1500多次。获得2008年安徽科学技术奖一等奖(排名第四)、2010年国家自然科学二等奖(排名第五年),2012年首届国家优秀青年科学基金,2014年中国矿物岩石地球化学学会“侯德封奖”。学历:1. 超高压变质岩中多期多硅白云母的年代学与矿物学 (国家自然科学基金,2005.1-2007.12,批准号:40403008)2. 华北克拉通显生宙期间岩石圈地幔的时代 (国家自然科学基金,2007.1-2010.12,批准号:40634019)3. 扬子克拉通钾镁煌斑岩和玄武岩研究对岩石圈厚度和性质的制约(国家自然科学基金,2010.1-2012.12,批准号:40973044)4. 离子探针分析基体效应研究-以橄榄石Li同位素为例 (国家自然科学基金,2012.1-2015.12, 批准号:41173009)5.

Please be sure to check out our new fully searchable database feature (click on the Search Site button on the left side of the screen) This update features assorted worldwide specimens including some recent acquisitions from the Tucson Show, along with one piece from our personal / family collection.

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