 | | Book | | Miguel Hortiguela, LPPO Illustrations: Crowle Art Group Printed in China The publisher gratefully acknowledges...139) Page 248: Quartz (amethyst variety), Erongo Mountains, Namibia * 5 x 6 x 3 cm Page 251: Calcite, Irai...Serbia ¢ tixex7 cm LEFT: Fluorite, Taihang Shan Mountains, Hebei, China * (Sexes selem 10 | MINERALS:...composed ofjust a few minerals; quartz and the feldspar group are the most abundant processes — called biominerals...crystals found in many volcanic rocks — such as feldspar and leucite — crystallized in a magma chamber |  | | Book | | Ploskaya Mountain, Western Keivy, Kola ÂPeninsula, Russia. Photo: Natalia A. Pekova, 1996. From archives...Ostrooumov et al. [47] at multiple amazonite deposits in Russia and other countries, the analysis of a multitude...University in St Petersburg, Ilmen Nature Reserve (Russia), Mainz University (Germany), University of Nantes...previously. Amazonite is a variety of potassium feldspar, a group of minerals extremely widespread in the Earth’s...The aforementioned characteristics of amazonitic feldspar allow it to be classified as highly promising |  | | Book | | APOPHYLLITE Nomenclature revisions in the apophyllitc group: hydroxyapophyllite, apophyllite, fluorapophyllite...Uvite, a new (old) common member of the tounnalinc group and its implications for collections 8: I00-108...Hematite from the [Veta Grande claim,] Dome Rock Mountains near Quartzsite, Arizona (by M. Sprunger) 11:227-229...14:85-90 Ferroan dolomite from the Vekol mine [Vekol Mountains, Arizona] (by D. M. Shannon) 14:91 Famous mineral...14:115-117 Calciovolbonhite from the New Water Mountains, Yuma County, Arizona (by W. Hunt) 14:119 Famous |  | | Book | | be tabulated with data for other members of the group. Drawings of idealized crystals by Laszlo Horvath...Labuntsovite-, Zeolite-, Lovozerite- and Cancrinite-group minerals and directed studies on fenite rocks. Dr...electron-microprobe data on several species. Dr. Pavel Kartashov (Russia) carried out analyses (rontgenite, SEM). Dr. Julian...hingganite . The late Dr. Alexander Khomyakov (Moscow, Russia) provided useful discussions on sodalitolite segregations...briefly mentioned the presence in the rock of feldspar, black hornblende, a copper-colored mica, and |  | | Journal (article/letter/editorial) | | chemical investigations. This report was compiled by a group of associates from the Institute of Mineralogy,...these figures. Gallium belongs to the third sub-group of elements in the periodic table and accordingly...element. Unlike the elements in the third main group, gallium is able to form compounds in lower valence...third subgroup differ from those of the third main group by the very low heats of formation of their oxides...are distinguished from the metals of the third group by their softness and their lower melting points |  | | Book (edition) | | extensively rewritten by the book’s distinguished group of authors in the light of new research and important...vivianite, Bolivia; (center, right) topaz, Thomas Mountains, Utah; (lower /eft) rnodochrosite, N’Chwaning...all varietal names, synonyms, spelling variants, group names, and so forth; only names in contemporary...contemporary use have been included. Most of the mineral group lists presented were taken from the Glossary of Mineral...letters pointing out that for some entries our space group, Z, and lattice constants are mutually exclusive | | | Book (edition) | | extensively rewritten by the book's distinguished group of authors in the light of new research and important...vivianite, Bolivia; ( center, right) topaz, Thomas Mountains, Utah; (lower le ft) rhodochrosite, N'Chwaning...all varietal names, synonyms, spelling variants, group names, and so forth; only names in contemporary...contemporary use have been included. Most of the mineral group lists presented were taken from the Glossa,y of Mineral...letters pointing out that for some entries our space group, Z, and lattice constants are mutually exclusive |  | | Book (edition) | | attempt a complete description of a small mineral group to uncover the unsatisfactory state of our present...well render the volume difficult to use by a large group of potential readers not familiar with structural/chemical...with the inherent problems of end-member names vs. group names and related aspects of nomenclature. Rather...spelling variants, descriptive names, mixtures, group names, chemical names, etc., found in the literature...letters pointing out that for some entries our space group , Z, and lattice constants are mutually exclusive |
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