 | | Journal (article/letter/editorial) | | Compositional variation in minerals of the chevkinite group R. MACDONALD1,* 1 2 AND H. E. BELKIN2 Environmental...Center, Reston, Virginia 20192, USA ABSTR ACT The composition of chevkinite and perrierite, the most common...common members of the chevkinite group, is closely expressed by the formula A4BC2D2Si4O22, where A = (La...applicable charge balancing substitution scheme in the group; however, the general relationship (Ca+Sr)A + TiC...MC3+,2+ defines a linear array with r2 = 0.91. Chevkinite and perrierite are shown to be compositionally |  | | Book (edition) | | (Brazil). Malcolm Back (Canada), Henry L. Barwood (USA). Dmitriy Belakovskiy (Russia). Fabio Bellatreccia...(Italy), T.S. Ercit (Canada). Alexander Falster (USA). Jeffrey de Fourestier (Canada). Robert Gault (Canada)...Henderson. Jr. (USA). D.D. Hogarth (Canada). J.L. Jam bor (Canada), Anthony R. Kampf (USA). Pave! M. Kartashov...Karnp-Moller (Denmark). Akira Kato (Japan). Lance E. Keams (USA). Elisabeth Kirchner (Austria), Uwe Kolitsch (Austria)...Republic). Per Nystcn (Sweden), David O'Hanlcy (USA). Filippo Olmi (deccased) (ltaly). Werner H. Paar |  | | 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...abbreviations: Rep. (republic), prov. (province), co. (county), munic. (municipio), pref. (prefecture), dept |
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