 | | Book | | describing some of its chemical properties. Within each group the minerals are listed accord¬ ing to CIM; and...states of Guanajuato and Chihuahua, Mexico. In the USA silver occurs at Keweenaw, Michigan, in association...neighbourhood of sulphur¬ bearing agents. Above: Copper from Lake Superior. Michigan. This crystal shows the enlarged...Corocoro, Bolivia, and at Cananea, Mexico. In the USA copper is found in abundance in the Keweenaw area...Czechoslo¬ vakia and Romania; in the Alps of South Island, NewZealand;fromCharters Towers, Queensland, from |  | | Book | | It is possible that pearls were recovered from salt and fresh waters and similarly used. But centuries...of this here. Next we must consider a peculiar group of Magnesium (Mg) has two more electrons than elements...appropriate and, indeed, these are linked with an (Si04) group in the mineral forsterite. The chemical short¬ hand...valencies and a bracket around the dis¬ tinctive (Si04) group would result in forsterite symbolized thus: (Mg2)4...ion O2- is divalent, the (P04)3- group is trivalent; the (Si04)4~ group in merwinite is tetravalent because |  | | Book (edition) | | to the chemical formula, allegiance to a mineral group, symmetry and crystal structure as well as the strongest...chemical formula, structure (crystal system, space group, and unit cell dimensions), and at least some other...site occupancy. The Sb members of the tennantite group (2.G) will serve as a good example: tetrahedrite...registered in this book (e.g. in the amphibole group). For more detailed information see "Dana's System...Polyphosphates 9. Silicates 9 .A Nesosilicates (island silicates) 9.B Sorosilicates (groups of islands |  | | Journal (article/letter/editorial) | | l-3) 235-252 magmas Kaapvaal Craton 37(2-3) 129-142 Lake Turkana 4(3) 305-323 metamorphism, Limpopo Belt...I-5 1 Al see aluminum Alabama magmas, Randolph County Alabama 2 I (3) 161-181 Aland magmas 22(3) 199-211...37-54 Alban Hills mineralogy lO(2) 133-141 Albany County Wyoming magmas l4(2) 113-132 Albatross Cordillera...mica see phlogopite Ambittle Island geochemistry 12(3) 173-186 amphibole group see also alkalic amphi- bole;...25( l-3) 7 I-88 Wyoming 9( 1) 55-63 Amsterdam Island petrology 8(2) 137-149 analcime 4(4) 389-402 Iran |  | | Book (edition) | | extensively rewritten by the book's distinguished group of authors in the light of new research and important...Willard Lincoln. Encyclopedia of minerals ~~cbe County Public Library Saguache, Colorado OEMCO For Refere...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 |  | | Book | | in regional swarms such as Coral Rapids, Bachelor Lake and Saguenay Valley (all in Canada) are calcite-rich...rocks of theIGbaran orogenic belt. In Zambia a group of vents and dykes intrude Jurassic sediments in...intrusions are known in the granitic craton south of Lake Victoria. They are largely concentrated in the Mabuki...diatreme has been little eroded and contains original crater-like sediments. More detailed accounts of the kimberlites...Bulawayo (MacGregor et al. 1937). In Botswana a group of diamondiferous kimberlites that have undergone |
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