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naumannite

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Journal Article

Observations on acanthite, aguilarite and naumannite Available to Purchase

W. Petruk, D. R. Owens, J. M. Stewart, E. J. Murray
Published: 01 August 1974
The Canadian Mineralogist (1974) 12 (6): 365–369.
...W. Petruk; D. R. Owens; J. M. Stewart; E. J. Murray Abstract Electron microprobe and X-ray diffraction data, synthetic and natural naumannite; samples from Idaho and Mexico © 1974 Mineralogical Association of Canada 1974 ...
View PDF for article title, Observations on acanthite, aguilarite and <span class="search-highlight">naumannite</span>
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Journal Article

Naumannite from republic, Washington Available to Purchase

R. M. Thompson
Published: 01 June 1954
American Mineralogist (1954) 39 (5-6): 525.
... of the microscopic properties suggested that one of the minerals comprising the black bands was naumannite (Ag 2 Se) and later confirmation was obtained by microchemical tests and an x -ray powder photograph. Copyright © 1954 by the Mineralogical Society of America 1954 Mineralogical Society of America ...
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Forms of acanthite and naumannite in the Rogovik ores. a, S-naumannite as separate microinclusions in Se-argyrodite and pyrite; b, Se-argyrodite intergrown with naumannite, acanthite, and imiterite in quartz; c, Se-acanthite at the contact with Se-argyrodite and mercurian kustelite; d, coarse and fine S-naumannite grains in the core, rim, and interstices of pyrite crystals; e, S-naumannite and pyrite intergrown with mercurian kustelite and K-feldspar; f, S-naumannite intergrown with pyrite and K-feldspar.

Forms of acanthite and naumannite in the Rogovik ores. a , S-naumannite as... Available to Purchase

Published: 01 December 2015
Fig. 1. Forms of acanthite and naumannite in the Rogovik ores. a , S-naumannite as separate microinclusions in Se-argyrodite and pyrite; b , Se-argyrodite intergrown with naumannite, acanthite, and imiterite in quartz; c , Se-acanthite at the contact with Se-argyrodite and mercurian kustelite
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Forms of naumannite in the Rogovik ores. a–c, S-naumannite as separate microinclusions and veinlets in pyrite intergrown with galena; d, S-naumannite and proustite filling pyrite cracks; e, S-naumannite intergrown with proustite and Se-stephanite in quartz; f, acanthite rims on Fe-sphalerite and acanthite veinlets in pyrite in quartz–K-feldspar aggregate.

Forms of naumannite in the Rogovik ores. a – c , S-naumannite as separate ... Available to Purchase

Published: 01 December 2015
Fig. 2. Forms of naumannite in the Rogovik ores. a – c , S-naumannite as separate microinclusions and veinlets in pyrite intergrown with galena; d , S-naumannite and proustite filling pyrite cracks; e , S-naumannite intergrown with proustite and Se-stephanite in quartz; f , acanthite rims
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Xenomorphic aggregate of native silver (1–6), naumannite (7–12), and stephanite (13, 14). Images: a, back-scattered electron, b–f, X-ray. 1–14, points of measurement of the contents of elements listed in Table 3.

Xenomorphic aggregate of native silver (1–6), naumannite (7–12), and stepha... Available to Purchase

Published: 01 October 2015
Fig. 6. Xenomorphic aggregate of native silver (1–6), naumannite (7–12), and stephanite (13, 14). Images: a , back-scattered electron, b – f , X-ray. 1–14, points of measurement of the contents of elements listed in Table 3 .
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Segregations of tiemannite, naumannite, fischesserite, clausthalite, Se-galena, hessite, and coloradoite in quartz. Sample ST-3-11, quartz vein 3, site II. Tiem, tiemannite, Naum, naumannite, Fish, fischesserite, Clst, clausthalite, Se-gn, Se-galena, Hs, hessite, Clr, coloradoite.

Segregations of tiemannite, naumannite, fischesserite, clausthalite, Se-gal... Available to Purchase

Published: 01 September 2015
Fig. 8. Segregations of tiemannite, naumannite, fischesserite, clausthalite, Se-galena, hessite, and coloradoite in quartz. Sample ST-3-11, quartz vein 3, site II. Tiem, tiemannite, Naum, naumannite, Fish, fischesserite, Clst, clausthalite, Se-gn, Se-galena, Hs, hessite, Clr, coloradoite.
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EMF (E) vs. temperature dependences for the reaction of naumannite formation from the elements according to different sources: 1 = Gronvold et al. (2003); 2 = von Oehsen and Shmalzried (1981); 3 = Takahashi and Yamamoto (1970); 4 = Kiukkola and Wagner (1957); 5 = this study.

EMF ( E ) vs. temperature dependences for the reaction of naumannite format... Available to Purchase

Published: 01 April 2007
F igure 3. EMF ( E ) vs. temperature dependences for the reaction of naumannite formation from the elements according to different sources: 1 = Gronvold et al. (2003) ; 2 = von Oehsen and Shmalzried (1981); 3 = Takahashi and Yamamoto (1970) ; 4 = Kiukkola and Wagner (1957) ; 5 = this study.
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COMPOSITION OF UMANGITE AND NAUMANNITE FROM THE COPPER HILLS PROSPECT, WEST... Available to Purchase

Published: 01 April 2002
TABLE 1. COMPOSITION OF UMANGITE AND NAUMANNITE FROM THE COPPER HILLS PROSPECT, WESTERN AUSTRALIA
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Photomicrograph of polished section showing naumannite (grey) and the intergrowth of chrisstanleyite and its Cu-dominant analogue (white), separated by chalcomenite (black). Width of field is 1.1 mm.

Photomicrograph of polished section showing naumannite (grey) and the inter... Available to Purchase

Published: 01 April 2002
F ig . 10. Photomicrograph of polished section showing naumannite (grey) and the intergrowth of chrisstanleyite and its Cu-dominant analogue (white), separated by chalcomenite (black). Width of field is 1.1 mm.
Journal Article

Ag 2 (S,Se) solid solutions in the ores of the Rogovik gold-silver deposit (northeastern Russia) Available to Purchase

G.A. Pal’yanova, R.G. Kravtsova, T.V. Zhuravkova
Published: 01 December 2015
Russ. Geol. Geophys. (2015) 56 (12): 1738–1748.
DOI: https://doi.org/10.1016/j.rgg.2015.11.006
...Fig. 1. Forms of acanthite and naumannite in the Rogovik ores. a , S-naumannite as separate microinclusions in Se-argyrodite and pyrite; b , Se-argyrodite intergrown with naumannite, acanthite, and imiterite in quartz; c , Se-acanthite at the contact with Se-argyrodite and mercurian kustelite...
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View PDF for article title, Ag 2 (S,Se) solid solutions in the ores of the Rogovik gold-silver deposit (northeastern Russia)
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Journal Article

The system Ag-Au-Se: Phase relations below 405 K and determination of standard thermodynamic properties of selenides by solid-state galvanic cell technique Available to Purchase

Evgeniy G. Osadchii, Ekaterina A. Echmaeva
Published: 01 April 2007
American Mineralogist (2007) 92 (4): 640–647.
DOI: https://doi.org/10.2138/am.2007.2209
...F igure 3. EMF ( E ) vs. temperature dependences for the reaction of naumannite formation from the elements according to different sources: 1 = Gronvold et al. (2003) ; 2 = von Oehsen and Shmalzried (1981); 3 = Takahashi and Yamamoto (1970) ; 4 = Kiukkola and Wagner (1957) ; 5 = this study. ...
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Figure 5

The Cu isotope values of minerals from Sandaowanzi and other epithermal Au-... Available to Purchase

Published: 01 May 2025
Figure 5. The Cu isotope values of minerals from Sandaowanzi and other epithermal Au-Ag deposits with ranges for chalcopyrite, in gray, and naumanite in blue [other deposit data from Saunders et al. ( 2016 )]. Abbreviations: Cp = chalcopyrite; El = electrum; Nm = naumannite. (Color online.)
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a) Province of La Rioja (in red) and its selenide districts: 1) El Chire, 2) Los Llantenes, 3) Cerro Cacho (including Las Asperezas, Tuminico). b) El Chire mine, underground, with an exposure of the oxidized selenide vein. c) Symmetrically banded selenide vein in altered country-rock. The coating of malachite is a consequence of weathered primary copper selenides. Symbols: tie tiemannite, nau naumannite, cc calcite. d) Polished slab of a brecciated vein section with fragments of country rock. The metallic phases are an intergrowth of naumannite–tiemannite. Other symbols as in c).

a) Province of La Rioja (in red) and its selenide districts: 1) El Chire, 2... Available to Purchase

Published: 01 December 2004
. The coating of malachite is a consequence of weathered primary copper selenides. Symbols: tie tiemannite, nau naumannite, cc calcite. d) Polished slab of a brecciated vein section with fragments of country rock. The metallic phases are an intergrowth of naumannite–tiemannite. Other symbols as in c).
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Acanthite and Ag sulfosalts in the ores of the Chukchi epithermal Au–Ag deposits. a, Colloform segregation of acanthite in quartz–sericite matrix (Kyplatap); b, acanthite intergrown with naumannite and with native-gold inclusion (Kaienmyvaam); c, acanthite deposition around galena (Corrida); d, xenomorphic segregations of pyrargyrite in quartz (Kupol); e, euhedral segregation of proustite intergrown with colorless sphalerite in quartz (Moroshka); f, disordered intergrowth of polybasite with stephanite, with native-gold segregations (Televeem); g, interstitial segregations of stephanite and proustite in quartz and transparent sphalerite crystal (Moroshka); h, intergrowth of polybasite and stephanite in quartz (Pepenveem); e, g, with analyzer. Ac, acanthite, Ga, galena, Nmt, naumannite, Prg, pyrargyrite; Prous, proustite, Pbs, polybasite, Ser, sericite, Sph, sphalerite, Stph, stephanite, Qz, quartz.

Acanthite and Ag sulfosalts in the ores of the Chukchi epithermal Au–Ag dep... Open Access

Published: 01 April 2022
Fig. 7. Acanthite and Ag sulfosalts in the ores of the Chukchi epithermal Au–Ag deposits. a, Colloform segregation of acanthite in quartz–sericite matrix (Kyplatap); b , acanthite intergrown with naumannite and with native-gold inclusion (Kaienmyvaam); c , acanthite deposition around galena
Journal Article

Gold- and Silver-Rich Massive Sulfides from the Semenov-2 Hydrothermal Field, 13°31.13'N, Mid-Atlantic Ridge: A Case of Magmatic Contribution? Available to Purchase

Irina Yu. Melekestseva, Valery V. Maslennikov, Gennady A. Tret’yakov, Paolo Nimis, Victor E. Beltenev, Irina I. Rozhdestvenskaya, Svetlana P. Maslennikova, Elena V. Belogub, Leonid Danyushevsky, Ross Large, Anatoly M. Yuminov, Sergey A. Sadykov
Journal: Economic Geology
Published: 01 June 2017
Economic Geology (2017) 112 (4): 741–773.
DOI: https://doi.org/10.2113/econgeo.112.4.741
..., and naumannite) rarely occur in the sulfides and in aragonite associated with opal-A; invisible silver was detected in all sulfides, but, again, covellite contains more Ag (>1,000 ppm) than all other sulfides (<250 ppm). Covellite replacing Zn sulfides (covellite-A) is enriched in all analyzed trace...
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View PDF for article title, Gold- and Silver-Rich Massive Sulfides from the Semenov-2 Hydrothermal Field, 13°31.13'N, Mid-Atlantic Ridge: A Case of Magmatic Contribution?
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Journal Article

Gold mineralization of the Khaak-Sair gold–quartz ore occurrence in listwänites ( western Tuva ) Available to Purchase

R.V. Kuzhuget, V.V. Zaikov, V.I. Lebedev, A.A. Mongush
Published: 01 September 2015
Russ. Geol. Geophys. (2015) 56 (9): 1332–1348.
DOI: https://doi.org/10.1016/j.rgg.2015.08.009
...Fig. 8. Segregations of tiemannite, naumannite, fischesserite, clausthalite, Se-galena, hessite, and coloradoite in quartz. Sample ST-3-11, quartz vein 3, site II. Tiem, tiemannite, Naum, naumannite, Fish, fischesserite, Clst, clausthalite, Se-gn, Se-galena, Hs, hessite, Clr, coloradoite. ...
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View PDF for article title, Gold mineralization of the Khaak-Sair gold–quartz ore occurrence in listwänites ( western Tuva )
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Journal Article

On the symmetry and crystal structure of aguilarite, Ag 4 SeS Available to Purchase

L. Bindi, N. E. Pingitore
Published: 01 February 2013
Mineralogical Magazine (2013) 77 (1): 21–31.
DOI: https://doi.org/10.1180/minmag.2013.077.1.03
... to be isostructural with acanthite; it does not have a naumannite-like structure, as previously supposed. Our data support the hypothesis that there are two solid solution series in the system: a monoclinic ‘acanthite-like’ series (from Ag 2 S–Ag 2 S 0.4 Se 0.6 ), and an orthorhombic ‘naumannite-like’ series (from Ag...
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Journal Article

SELENOPOLYBASITE, [(Ag,Cu) 6 (Sb,As) 2 (S,Se) 7 ][Ag 9 Cu(S,Se) 2 Se 2 ], A NEW MEMBER OF THE PEARCEITE–POLYBASITE GROUP FROM THE DE LAMAR MINE, OWYHEE COUNTY, IDAHO, USA Available to Purchase

Luca Bindi, Michel Evain, Silvio Menchetti
Published: 01 December 2007
The Canadian Mineralogist (2007) 45 (6): 1525–1528.
DOI: https://doi.org/10.3749/canmin.45.6.1525
... with naumannite, covellite, pyrite and calcite. Selenopolybasite is opaque with a metallic luster and possesses a black streak. It is brittle, and neither fracture nor cleavage was observed; the Vickers microhardness (VHN 100 ) is 131 kg/mm 2 (range 125–141) (corresponding Mohs hardness: 3–3½). The density could...
View PDF for article title, SELENOPOLYBASITE, [(Ag,Cu) 6 (Sb,As) 2 (S,Se) 7 ][Ag 9 Cu(S,Se) 2 Se 2 ], A NEW MEMBER OF THE PEARCEITE–POLYBASITE GROUP FROM THE DE LAMAR MINE, OWYHEE COUNTY, IDAHO, USA
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Journal Article

STRUCTURAL AND PHYSICAL PROPERTIES OF FISCHESSERITE, A RARE GOLD–SILVER SELENIDE FROM THE DE LAMAR MINE, OWYHEE COUNTY, IDAHO, USA Available to Purchase

Luca Bindi, Curzio Cipriani
Published: 01 December 2004
The Canadian Mineralogist (2004) 42 (6): 1733–1737.
DOI: https://doi.org/10.2113/gscanmin.42.6.1733
... in color with a metallic luster. In reflected light, the mineral is pink. Where observed near naumannite, it appears darker with slightly bluish tints. Reflectivity values are 32.5 (471.1 nm), 30.0 (548.3 nm), 31.1 (586.6 nm), and 33.7% (652.3 nm). Fischesserite is cubic, space group I 4 1 32, with a 9.965...
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View PDF for article title, STRUCTURAL AND PHYSICAL PROPERTIES OF FISCHESSERITE, A RARE GOLD–SILVER SELENIDE FROM THE DE LAMAR MINE, OWYHEE COUNTY, IDAHO, USA
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Journal Article

JAGUEITE, Cu 2 Pd 3 Se 4 , A NEW MINERAL SPECIES FROM EL CHIRE, LA RIOJA, ARGENTINA Available to Purchase

Werner H. Paar, Dan Topa, Emil Makovicky, Ricardo J. Sureda, Milka K. de Brodtkorb, Ernest H. Nickel, Hubert Putz
Published: 01 December 2004
The Canadian Mineralogist (2004) 42 (6): 1745–1755.
DOI: https://doi.org/10.2113/gscanmin.42.6.1745
.... The coating of malachite is a consequence of weathered primary copper selenides. Symbols: tie tiemannite, nau naumannite, cc calcite. d) Polished slab of a brecciated vein section with fragments of country rock. The metallic phases are an intergrowth of naumannite–tiemannite. Other symbols as in c). ...
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View PDF for article title, JAGUEITE, Cu 2 Pd 3 Se 4 , A NEW MINERAL SPECIES FROM EL CHIRE, LA RIOJA, ARGENTINA
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