Hostname: page-component-78c5997874-ndw9j Total loading time: 0 Render date: 2024-11-19T20:17:53.506Z Has data issue: false hasContentIssue false
  • English
  • Français

Dwornikite, (Ni,Fe)SO4 · H2O, a member of the kieserite group from Minasragra, Peru

Published online by Cambridge University Press:  05 July 2018

Charles Milton ,
Howard T. Evans Jr.  and
Robert G. Johnson
Charles Milton
Affiliation:
US Geological Survey and George Washington University
Howard T. Evans Jr.
Affiliation:
US Geological Survey, National Center 959, Reston, Virginia 22092, USA
Robert G. Johnson
Affiliation:
US Geological Survey, National Center 959, Reston, Virginia 22092, USA
Get access Rights & Permissions [Opens in a new window]

Abstract

Dwornikite, (Ni1−xFex)SO4 · H2O is a member of the kieserite group, monoclinic with space group C2/c. Specimens from Minasragra, Peru with x ∼ 0.1 have a unit cell with a = 6.839(2), b = 7.582(2), c = 7.474(2) Å, and β = 117.85(2)°. The six strongest lines of the powder pattern are: 3.342 (12, 100), 4.732 (110, 70), 3.024 (200, 70), 4.754 (11, 50), 3.293 (021, 35), 2.491 (022, 35). The mineral occurs as fine grained white aggregates associated with vanadium sulphide ores containing patronite and bravoite, mixed with other oxidation products. New unit cell data for the synthetic end-member compounds NiSO4 · H2O and FeSO4 · H2O, and new X-ray powder data for retgersite (NiSO4 · 6H2O) are provided.

Type
Research Article
Information
Mineralogical Magazine , Volume 46 , Issue 340 , September 1982 , pp. 351 - 355
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1982

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Hewett, D. F. (1910) Vanadium deposits in Peru. Trans. Am. Inst. Min. Eng. 40, 274–99.Google Scholar
LeFur, Y., Coing-Boyat, J., and Bassi, G. (1966) Struc¬ture des sulfates monohydratbs, monocliniques des m6taux de transition, MSO4,H20 (M = Mn, Fe, Co, Ni et Zn). C.R. Acad. Sci. Paris, C262, 632-5.Google Scholar
Mandarino, J. A. (1976) The Gladstone-Dale relationship —-Part I: Derivation of new constants. Can. Mineral. 14, 498–502.Google Scholar
O'Connor, B. H., and Dale, D. H. (1966) A neutron diffraction analysis of the crystal structure of tetragonal nickel sulfate hexadeuterate. Acta Crystalloor. 21, 705–9.CrossRefGoogle Scholar
Oswald, H. R. (1965) Uber die Bindung der Wasser-molekel in den Verbindungen MenSeO4“lH20: I.- Strukturuntersuehungen: Helv: Chim. Acta; 48, 590–600.CrossRefGoogle Scholar
Paist, D. A., and Pings, W. B. (1970) Vanadium—-1970. Bull. Colorado School of Mines Mineral Industries, 13, 9.Google Scholar
Palache, C., Berman, H., and Frondel, C. (1951) Dana's System of Mineralogy, 7th edn., vol. 2. John Wiley & Sons, New York.Google Scholar
Pistorius, C. W. F. T. (1960) Lattice constants of FeSO4 - H20 (artificial szomolnikite) and NiSO4 “ H20. Bull. Soc. Chim. Belg. 69, 570–4.10.1002/bscb.19600691106CrossRefGoogle Scholar
Smith, M. L., and Marinenko, J. (1973) A reexamination of minasragfite, Am. Mineral. 58, 531–4 [MA 74,491].Google Scholar
Strunz, H. (1977) Mineralogische Tabellen. Akademische Verlagsgesellschaft, Leipzig.Google Scholar
Swanson, H. E., Gilfrich, N. T., and Cook, M. I. (1957) Standard X-ray Diffraction Powder Patterns. U.S. Nat. Bur. Stand. Circ. 539, Vol. 7, pp. 36-7.Google Scholar