1-20 OF 65 RESULTS FOR

baumhauerite

Results shown limited to content with bounding coordinates.
Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
Journal Article
Published: 01 August 1990
American Mineralogist (1990) 75 (7-8): 915–922.
...Allan Pring; William D. Birch; David Sewell; Stefan Graeser; Andreas Edenharter; Alan J. Criddle Abstract Baumhauerite- 2a is a silver-bearing mineral having a superstructure derived from a baumhauerite-like structure, with an average composition Pb 11 Ag 0.7 As 17.2 Sb 0.4 S 36 . Baum-hauerite- 2a...
Journal Article
Published: 01 August 2017
European Journal of Mineralogy (2017) 29 (4): 689–700.
... As 10.98 S 36.19 (on the basis of 28 Me + 36S = 64 apfu ). The simplified formula, AgTl 3 Pb 4 Sb 9 As 11 S 36 , is in accordance with the results of the crystal-structure analysis and may be derived from the ideal baumhauerite formula, Pb 12 As 16 S 36 , by substitution of Sb for As and [(Tl,Ag...
Journal Article
Published: 01 August 2016
Mineralogical Magazine (2016) 80 (5): 819–840.
... is Cu 0.06 Ag 1.20 Tl 0.18 Pb 21.46 Sb 0.56 As 32.28 S 72.26 . The difference from the idealized baumahuerite formula, Pb 12 As 16 S 36 , and from the formula of Ag-, Tl- and Sb-free baumhauerite from Moosegg, Austria, Pb 11.80 As 16.28 S 35.92 , expresses the Ag + As and Tl + As substitution for 2Pb...
FIGURES | View All (9)
Journal Article
Published: 01 April 1994
American Mineralogist (1994) 79 (3-4): 302–307.
...Allan Pring; Stefan Graeser Abstract High-resolution transmission electron microscope studies reveal the origin and nature of polytypism in baumhauerite. The polltypes are stacking variants of the basic baumhauerite structure, a = 22.80, b = 8.36, c = 7.89 Å, β = 97.27°, and involve inversion...
Journal Article
Published: 01 November 1938
American Mineralogist (1938) 23 (11): 821–836.
... of his angles but it has gone into every printed description of the mineral. Since no complete two-circle angle table has been published for baumhauerite, one has been calculated and the angles for the more important forms are given below; 118 forms are listed by Solly whose position and elements...
Image
Atom labels for the crystal structure of ( a ) <span class="search-highlight">baumhauerite</span> and ( b ) argen...
Published: 01 August 2016
Fig. 1. Atom labels for the crystal structure of ( a ) baumhauerite and ( b ) argentobaumhauerite.
Image
BSE and reflected light (crossed polars) figures of <span class="search-highlight">baumhauerite</span> and argent...
Published: 01 August 2016
Fig. 7. BSE and reflected light (crossed polars) figures of baumhauerite and argentobaumhauerite aggregates from Lengenbach, Binntal, Switzerland. Abbreviations: bmh – bauhauerite; agbmh – argentobaumhauerite; rth – rathite; srt – sartorite. Exsolutions and replacements illustrated in figures
Image
Comparison of fundamental elements of the crystal structures of ( a ) baumh...
Published: 01 August 2016
Fig. 2. Comparison of fundamental elements of the crystal structures of ( a ) baumhauerite and ( b ) argentobaumhauerite . The N   =  3 and N   =  4 slabs are divided into double-layer ribbons with tricapped trigonal coordination prisms of Pb at their obtuse ends, and As- and LEP-based
Journal Article
Published: 01 August 2017
European Journal of Mineralogy (2017) 29 (4): 713–726.
... a superstructure relative to that of baumhauerite. Its crystal structure can be described as being formed by 1:1 alternation of sartorite-type ( N = 3) and dufrénoysite-type ( N = 4) layers along c, connected by Pb atoms with tricapped trigonal prismatic coordination. Each layer results from the stacking of two...
Image
A slightly oblique view of the  N  = 3 double layer in the crystal structur...
Published: 01 August 2016
Fig. 4. A slightly oblique view of the N  = 3 double layer in the crystal structure of baumhauerite. For conventions see Fig. 3 .
Image
A slightly oblique view of the  N  = 4 double layer in the crystal structur...
Published: 01 August 2016
Fig. 6. A slightly oblique view of the N  = 4 double layer in the crystal structure of baumhauerite. For conventions see Fig. 3 .
Image
Details concerning chemistry, topology and charge balance of the  N  = 3 an...
Published: 01 September 2019
Fig. 8 Details concerning chemistry, topology and charge balance of the N  = 3 and N  = 4 double-layer ribbons (all oriented along the 8.4 Å axis for each structure; ribbon colours as explained in Fig. 7 ) in the crystal structure of: (a) baumhauerite, (b) “ideal (434 based on baumhauerite N
Image
( a ) As–Sb and ( b ) Tl–Ag correlations for the sartorite homologues from ...
Published: 01 August 2016
Fig. 9. ( a ) As–Sb and ( b ) Tl–Ag correlations for the sartorite homologues from Lengenbach, present in the baumhauerite samples and analysed in this study. Element concentrations are expressed in atomic percent.
Image
(a, b) Backscattered electron (BSE) images and corresponding (a′, b′) refle...
Published: 01 September 2019
Fig. 2 (a, b) Backscattered electron (BSE) images and corresponding (a′, b′) reflected-light photographs (crossed polars) of (a) homogeneous argentoliveingite grains and an aggregate of argentoliveingite associated with baumhauerite (white) and argentobaumhauerite (dark) in specimen N 9868.
Image
Substitutional variations in argentoliveingite and associated minerals from...
Published: 01 September 2019
for comparison, but as minerals, they are not associated with the liveingite and baumhauerite groups. Numbers 1–11 indicate the following ideal chemistries: 1 – baumhauerite: Pb 24 As 16 S 36 , 2 – 3 argentobaumhauerite range: (AgPb 22 As 33 S 72 – Ag 2 Pb 20 As 34 S 72 ), 4 – liveingite: Pb 20 As 24 S 56 , 5
Journal Article
Published: 01 September 2019
European Journal of Mineralogy (2019) 31 (5-6): 1079–1097.
...Fig. 8 Details concerning chemistry, topology and charge balance of the N  = 3 and N  = 4 double-layer ribbons (all oriented along the 8.4 Å axis for each structure; ribbon colours as explained in Fig. 7 ) in the crystal structure of: (a) baumhauerite, (b) “ideal (434 based on baumhauerite N...
FIGURES | View All (12)
Journal Article
Published: 01 February 2017
Mineralogical Magazine (2017) 81 (1): 47–60.
...Cristian Biagioni; Yves Moëlo Abstract Boscardinite, ideally TlPb 4 (Sb 7 As 2 ) Σ9 S 18 , has been described recently as a new homeotypic derivative of baumhauerite, found at Monte Arsiccio mine, Apuan Alps, Tuscany, Italy. New findings of boscardinite in different mineral associations...
FIGURES | View All (4)
Journal Article
Published: 01 February 2016
Mineralogical Magazine (2016) 80 (1): 175–186.
... crystals, up to 50 μm, associated with dolomite, realgar, baumhauerite (?) and pyrite. Minimum and maximum reflectance data for COM wavelengths in air are [λ (nm): R (%)]: 471.1: 24.2/25.4; 548.3: 23.7/24.7; 586.6: 22.9/23.8; 652.3: 21.0/22.0. Electron microprobe analyses give (wt.%): Cu 6.24(25), Ag 4.18...
FIGURES | View All (4)
Journal Article
Published: 01 April 2012
The Canadian Mineralogist (2012) 50 (2): 235–251.
...), and 2.176 (ms). Boscardinite is the Tl–Sb homeotype of baumhauerite; its crystal structure has been solved by X-ray single-crystal study on the basis of 4319 observed reflections with a final R 1 = 0.045. It can be described in the sartorite homologous series as formed by the 1:1 alternation of sartorite...
FIGURES | View All (9)
Journal Article
Published: 01 April 1990
American Mineralogist (1990) 75 (3-4): 289–294.
... highly disordered specimens were found. The “disordered liveingite,” compositionally intermediate between dufrenoysite and liveingite, was found to be a disordered intergrowth of sartorite-like units and dufrenoysite-like units. The sartorite-like units are similar to those found in baumhauerite, whereas...