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La heidornite è un minerale. Indice. 1 Abito cristallino; 2 Origine e giacitura; 3 Forma in cui si presenta in natura; 4 Collegamenti esterni ...
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what is certainly a valid new mineral in the hilgardite-heidornite group.) .... mineral, and it may be that in tyretskite, as in heidornite, NaCl is ...
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Heidornite. Hilgardite see also Unnamed Minerals. Al umohydrocalcite .... Heidornite. Hidalgoite. Honessite. Hydrobasaluminite. Hydronium jarosite. Innelite ...
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; The Sulfates are an important mineral class and include some very interestingand attractive specimens. Although many minerals belong to this class onlybarite, gypsum, and anhydrite can be considered common. ... Heidornite(Sodium Calcium Borate Sulfate Chloride Hydroxide)
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The borate sheets in heidornite, tuzlaite and the synthetic compound Na3[B5O8(OH)2]·H2O are built up uniquely through connections of the [3t+2Δ] ...
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References:; - Bode, R. & Wittern, A. (1989): Mineralien und Fundstellen Bundesrepublik Deutschland. Bode Verlag, Haltern, Germany, 303 pp. - Haake, R., Flach, S. & Bode, R. (1994): ... ; Mineral list contains entries from the region specified including sub-localities; ... 32180 entries listed. 1489 valid minerals.
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A large, presently (2008) inactive anhydrite quarry, owned by the 'Harzer Anhydrit-Werke' which is part of the Wildgruber Group. Located near Niedersachswerfen in the southeastern Harz mountains, 6 km NNW of Nordhausen and 3 km SW of Ilfeld. ... This locality information is for reference purposes only. ... 22 entries listed.
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In the mineral heidornite, Burzlaff (1967) found the [BsOs(OH)2]3- group building ... In heidornite the central B of the polyanion lies on a twofold axis so ...
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This compound, as well as the mineral heidornite (Burzlaff, 1967), is structurally charac- terized by B--O sheets whose repeat unit in both instances can be ...
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[B5O?(OH)4]3 -[85O8(OH)']3- + H'O probertite heidornite; [B5O8(OH),]3--[ BsOs]3- + HrO heidornite hilgardite; Hence, the lowering of the activity of water and most likely rising temperatures will favor the formation of hilgardite rather than ulexite.
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