Crystal Chemical Characterization of the Mixed Conductor Sr ( Fe , Co ) 1.5 O  y Exhibiting Unusually High Oxygen Permeability

1997 ◽  
Vol 144 (5) ◽  
pp. L120-L122 ◽  
Author(s):  
S. Guggilla ◽  
A. Manthiram
Keyword(s):  
Oxygen Permeability ◽  
Chemical Characterization ◽  
High Oxygen ◽  
Mixed Conductor ◽  
Crystal Chemical

Structural role of copper in the minerals of the pearceite-polybasite group: the case of the new minerals cupropearceite and cupropolybasite

2007 ◽  
Vol 71 (06) ◽  
pp. 641-650 ◽  
Author(s):  
L. Bindi ◽  
M. Evain ◽  
P. G. Spry ◽  
K. T. Tait ◽  
S. Menchetti
Keyword(s):  
Chemical Characterization ◽  
Sample Space ◽  
The Other ◽  
Crystal Chemical ◽  
Structural Position ◽  
Space Group ◽  
Cu Content ◽  
Own Name

Abstract The pearceite-polybasite group of minerals, general formula [M6T2S7][Ag9CuS4] with M = Ag, Cu; and T = As, Sb, show a crystal structure which can be described as the succession, along the c axis, of two pseudo-layer modules: a [M6T2S7]2– A module layer and a [Ag9CuS4]2+ B module layer. Copper is present in one structural position of the B module layer and replaces Ag in the only fully occupied M position of the A module layer. When the Cu content is >4.00 a.p.f.u., the structural position of the A module layer becomes Cu-dominant and, consequently, the mineral deserves its own name. In this paper we report the crystal-chemical characterization of two Cu-rich members exhibiting the 111 unitcell type (corresponding to the Tac polytype). One sample (space group (P )m1, a 7.3218(8), c 11.8877(13) Å, V 551.90(10) Å3, Z = 1) having As >Sb and with the structural position of the A module layer dominated by Cu, has been named cupropearceite and the other sample (space group (P3̄)m1, a 7.3277(3), c 11.7752(6) Å, V 547.56(8) Å3, Z = 1) having Sb >As has been named cupropolybasite. Both the new minerals and mineral names have been approved by the IMA-CNMNC.

scholarly journals Crystal chemical characterization of mullite-type aluminum borate compounds

2017 ◽  
Vol 247 ◽  
pp. 173-187 ◽  
Author(s):  
K. Hoffmann ◽  
T.J.N. Hooper ◽  
H. Zhao ◽  
U. Kolb ◽  
M.M. Murshed ◽  
...  
Keyword(s):  
Chemical Characterization ◽  
Crystal Chemical ◽  
Aluminum Borate

Synthesis and crystal chemical characterization of the pyrochlore type MgZrSi2O7

2011 ◽  
Vol 128 (3) ◽  
pp. 410-412 ◽  
Author(s):  
Junshan Xu ◽  
Eiji Ito ◽  
Daisuke Yamazaki ◽  
Xinzhuan Guo ◽  
Xiaoping Wu
Keyword(s):  
Chemical Characterization ◽  
Crystal Chemical ◽  
Pyrochlore Type

TYPIX Standardized Data and Crystal Chemical Characterization of Inorganic Structure Types

1993 ◽  
Author(s):  
Erwin Parthé ◽  
Louise Gelato ◽  
Bernard Chabot ◽  
Marinella Penzo ◽  
Karin Cenzual ◽  
...  
Keyword(s):  
Chemical Characterization ◽  
Crystal Chemical ◽  
Inorganic Structure

TYPIX Standardized Data and Crystal Chemical Characterization of Inorganic Structure Types

1994 ◽  
Author(s):  
Erwin Parthé ◽  
Louise Gelato ◽  
Bernard Chabot ◽  
Marinella Penzo ◽  
Karin Cenzual ◽  
...  
Keyword(s):  
Chemical Characterization ◽  
Crystal Chemical ◽  
Inorganic Structure
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