 | | Book | | de Luxembourg With 106 Figures and 95 Tables =e in the text and on 8 Folders 1970 GEBRUDER BORNTRAEGER...character- ized, with scarce an exception, by vulcanism, and the yulcanological evolution, rock suites, geomorphological...intimate acquaintance with all the Atlantic islands, and there is every reason to believe this applies even...southern islands separate, for reasons given above, and no less to furnish a volume of reasonable magnitude...general, shown little interest, and indeed the American J.C. Branner and the Belgian, A. RENARD, are the |  | | Report (issue) | | Crystals short prismatic, to 0.5 mm, dominated by f101g and pinacoids k to [001]. Twinning: Not uncommon, with...Physical Properties: Cleavage: Distinct on f101g and f010g, indistinct on f100g. Tenacity: Brittle. Hardness...912(2) ® = 106± 14(2)0 X-ray Powder Pattern: Ascension Island. 4.20 (vs), 3.58 (vs), 3.08 (vs), 5.90 (s)...02 0.11 0.04 15.60 0.04 100.91 99.94 (1) Ascension Island; corresponds to (K1:79 Na0:32 )§=2:11 Zr1:01...of alkalic granite in trachytic and basaltic tu®s (Ascension Island); in syenite (Serra de Agua de Pau |  | | Journal (article/letter/editorial) | | a new potassium zirconium silicate, from Ascension Island, Atlantic. By R. VAN TASSEL, I n s t i t u...trachytic and basaltic tufts of Green Mountain and Middleton Peak on Ascension Island, and a petrographic...R. A. Daly in his memoir on the geology of Ascension Island. ~ Professor C. E. Tilley while examining...the presence of the mineral now to be described, and following a preliminary investigation b y Dr. S....composed of microperthite and quartz associated in varying proportions with aegirine and a strongly pleochroic |  | | Journal (article/letter/editorial) | | dalyite By S. G. FLEET Department of Mineralogy and Petrology, With (Received University of Cambridge...silicate K1.7oNao.30ZrSi6015' has been determined and refined by two-dimensional Fourier methods, It is... six- and eight-membered rings of Si04 tetrahedra, The sheets are joined by Zr06 octahedra and by (K...distances range from 1.54 A to 1.67 A (::I:: ,01 A) and the average of twelve independent Si-O distances...(::I:: .03 A), and the average K(Na)-O distance 3.02 A (::I:: .13 A). 1. Introduction and summary of |  | | Journal (article/letter/editorial) | | dalyite By S. G. FLEET Department of Mineralogy and Petrology, With (Received University of Cambridge...silicate K1.7oNao.30ZrSi6015' has been determined and refined by two-dimensional Fourier methods, It is... six- and eight-membered rings of Si04 tetrahedra, The sheets are joined by Zr06 octahedra and by (K...distances range from 1.54 A to 1.67 A (::I:: ,01 A) and the average of twelve independent Si-O distances...(::I:: .03 A), and the average K(Na)-O distance 3.02 A (::I:: .13 A). 1. Introduction and summary of |  | | Journal (issue) | | • . ... . . . . ••. co·LONIAL . .AND . • : GEOLOGY INERAL RESOURCES VOLUME 3, NUMBER 2 ...War eh ou•••: CRAVEN HOUSE, CRAVEN STR£~T. W.c.2 and at . LONDON BRIDGE STREET. LL1 mEMICAl & METALLURGICAL...ILMENITE AND BERYL OTHER ZIRCON MINERALS BUYERS OF I MINERALS r ORES CONCENTRATES SWEEPS and RESIDUES...REFRACTORY GOLD CONCENTRATES etc. Smelting Works and Re.finery: BRIMS,DOWN, MIDDLESEX Offices at: NEW...ADELAIDE I . 1 K. & B. Laboratory Equipment Hand and Motor Driven Jaw Crushers Pulverizers, Grinding Mills |  | | Book (edition) | | admiration and affection that I dedicate this edition to my co-author, teacher, mentor, colleague and friend...Glossaryof MINERAL SPECIES 2008 Malcolm E. Back and Joseph A. Mandarino The Mineralogical RecordIne...as of December I, 2007. of the names, symmetry. and chemical compositionsof mineralspecies.Synonymsand...sadness. On September 18, 2007, my Teacher, Mentor and Friend. Joe Mandarino passed away after a long battle...including the International Encyclopedia of Minerals and the next edition of the Glossary, Joe asked me if |
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