 | | Journal (issue) | | website: http://www.novamineralclub.org/ Northern Virginia Mineral Club members, Wayne Sukow November 16...Topaz .................... p. 5 Henry Heuland: Heulandite ...................... p. 6 Exploring minerals...Gilgit. The pegmatite at Morefield Mine in Amelia County, VA, has also produced topaz. Imperial topaz (see...Newsletter November 2015 5 Henry Heuland: Heulandite by Sheryl E. Sims John Henry Heuland (1778‒1856)...Spanish, and Russian, in addition to German. Left: Heulandite from India. Photo: S. Sims. Right: Henry Heuland |  | | Report (issue) | | cover—Turquois crystals from Lynch Station, Virginia; x ca.; pho tograph by Neal Ycdlin; color plates...C. A. Michael. COLD NUGGET FROM SPOTSYLVANIA COUNTY: Longest dimension approximately 13 cm., photograph...of Virginia R. V. DIETRICH* Professor of Geology and Associate Dean of Arts & Sciences, Virginia Polytechnic...Polytechnic Institute Research Division Bulletin 47 Virginia Polytechnic Institute, Blacksburg, Va. 24061 *... © R. V. Dietrich and the Research Division of Virginia Polytechnic Institute, 1970 Printed and bound |  | | Book | | content in framework aluminosilicates is always (Ca + Mg+ Ba + NaZ+ KZ)/AI = 1. Zeolites differ from...molecules. The general formula for a zeolite mineral is (Ca,NaZ,KZ,Ba,Sr,Mg,CsZ,LiZ)a[AlaSi n_a 0Zn] •xHZO The...counterbalanced by adding positively charged cations (Ca, K, Na, Li, Mg, Sr, Ba, Cs) to produce an electrically...zeolites such as analcime, chabazite, stilbite, and heulandite can be easily identified, named, and cataloged...ratio can be written, for example, as silica-rich heulandite rather than clinoptilolite. Descriptive modifiers | | | Book | | content in framework aluminosilicates is always (Ca + Mg+ Ba + NaZ+ KZ)/AI = 1. Zeolites differ from...molecules. The general formula for a zeolite mineral is (Ca,NaZ,KZ,Ba,Sr,Mg,CsZ,LiZ)a[AlaSi n_a 0Zn] •xHZO The...counterbalanced by adding positively charged cations (Ca, K, Na, Li, Mg, Sr, Ba, Cs) to produce an electrically...zeolites such as analcime, chabazite, stilbite, and heulandite can be easily identified, named, and cataloged...ratio can be written, for example, as silica-rich heulandite rather than clinoptilolite. Descriptive modifiers |
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