Supergene iron sulpho-selenides from the Zapadno-Ozernoe copper-zinc massive sulphide deposit, South Urals, Russia: a new solid-solution series between pyrite FeS2 and dzharkenite FeSe2

2003 ◽  
Vol 67 (2) ◽  
pp. 355-361 ◽  
Author(s):  
V. A. Yakovleva ◽  
E. V. Belogub ◽  
K. A. Novoselov
Keyword(s):  
Solid Solution ◽  
Massive Sulphide ◽  
South Urals ◽  
Solid Solution Series ◽  
Massive Sulphide Deposit ◽  
Sulphide Deposit ◽  
Limited Solid Solution ◽  
Solution Series ◽  
Reflected Light ◽  
Copper Zinc

Supergene Fe sulpho-selenides (pyrite, dzharkenite and their intermediate compositions) were discovered in the oxidation zone of the Zapadno-Ozernoe copper-zinc massive sulphide deposit, South Urals, in association with other rare supergene sulphides, such as galena, tetrahedrite, metacinnabarite, tiemannite, Pb sulpharsenides of the jordanite group, undetermined sulphosalts of Hg and Ag, and native elements, such as S, Au and Se. This is the second known occurrence of dzharkenite. The results of the investigation of Fe sulpho-selenides using electron microprobe analysis, X-ray diffraction (XRD) and reflected light microscopy show the existence of a limited solid-solution series between pyrite and dzharkenite, which has not been described before.

scholarly journals Coupled Substitutions in Natural MnO(OH) Polymorphs: Infrared Spectroscopic Investigation

Minerals ◽  
2021 ◽  
Vol 11 (9) ◽  
pp. 969
Author(s):  
Nikita V. Chukanov ◽  
Dmitry A. Varlamov ◽  
Igor V. Pekov ◽  
Natalia V. Zubkova ◽  
Anatoly V. Kasatkin ◽  
...  
Keyword(s):  
Solid Solution ◽  
South Urals ◽  
Ir Absorption ◽  
Solid Solution Series ◽  
X Ray Diffraction ◽  
X Ray ◽  
Solution Series ◽  
Middle Range ◽  
Ir Absorption Spectra ◽  
Coupled Substitution

Solid solutions involving natural Mn3+O(OH) polymorphs, groutite, manganite, and feitknechtite are characterized and discussed based on original and literature data on the chemical composition, powder and single-crystal X-ray diffraction, and middle-range IR absorption spectra of these minerals. It is shown that manganite forms two kinds of solid-solution series, in which intermediate members have the general formulae (i) (Mn4+, Mn3+)O(OH,O), with pyrolusite as the Mn4+O2 end-member, and (ii) (Mn3+, M2+)O(OH, H2O), where M = Mn or Zn. In Zn-substituted manganite from Kapova Cave, South Urals, Russia, the Zn2+:Mn3+ ratio reaches 1:1 (the substitution of Mn3+ with Zn2+ is accompanied by the coupled substitution of OH− with H2O). Groutite forms solid-solution series with ramsdellite Mn4+O2. In addition, the incorporation of OH− anions in the 1 × 2 tunnels of ramsdellite is possible. Feitknechtite is considered to be isostructural with (or structurally related to) the compounds (M2+, Mn3+)(OH, O)2 (M = Mn, Zn) with a pyrochroite-related layered structure.

The Crystal Structure of Bi2PbMnO4(PO4)2, a Member of a New Solid Solution Series in the Bi–Pb–Mn–P Oxide System

2002 ◽  
Vol 165 (2) ◽  
pp. 324-333 ◽  
Author(s):  
Olivier Cousin ◽  
Marielle Huve ◽  
Pascal Roussel ◽  
Olivier Perez ◽  
Hugo Steinfink
Keyword(s):  
Crystal Structure ◽  
Solid Solution ◽  
Oxide System ◽  
Solid Solution Series ◽  
Solution Series

Rietveld refinement of the solid-solution series: (Cu,Mg)SO4·H2O

1995 ◽  
Vol 10 (3) ◽  
pp. 189-194 ◽  
Author(s):  
C. L. Lengauer ◽  
G. Giester
Keyword(s):  
Solid Solution ◽  
Rietveld Refinement ◽  
Powder Diffraction ◽  
Rietveld Method ◽  
Structure Refinement ◽  
Solid Solution Series ◽  
Cation Site ◽  
Tg Analysis ◽  
X Ray ◽  
Solution Series

The kieserite-type solid-solution series of synthetic (Cu,Mg)SO4·H2O was investigated by TG-analysis and X-ray powder diffraction using the Rietveld method. Representatives with Cu≥20 mol% are triclinic distorted () analogous to the poitevinite (Cu,Fe)SO4·H2O compounds. Cation site ordering with preference of Cu for the more distorted M1 site was additionally proven by the structure refinement.

ChemInform Abstract: The Solid Solution Series (GeTe)x(LiSbTe2)2(1 ≤ x ≤ 11) and the Thermoelectric Properties of (GeTe)11(LiSbTe2)2.

ChemInform ◽  
2013 ◽  
Vol 44 (50) ◽  
pp. no-no
Author(s):  
Thorsten Schroeder ◽  
Stefan Schwarzmueller ◽  
Christian Stiewe ◽  
Johannes de Boor ◽  
Markus Hoelzel ◽  
...  
Keyword(s):  
Solid Solution ◽  
Thermoelectric Properties ◽  
Solid Solution Series ◽  
Solution Series
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