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Nagyágite

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Nagyág (now Săcărâmb) in the 19th century

Sacarîmb, Deva, Hunedoara Co., Romania
Formula:
Pb5Au(Te,Sb)4S5-8
System:
Monoclinic
Colour:
Black-grey
Lustre:
Metallic
Hardness:
1 - 1½
Name:
After the Hungarian name (Nagyág) of the type locality (Săcărâmb, Romania).
This page provides mineralogical data about Nagyágite.

Classification of Nagyágite

Valid - first described prior to 1959 (pre-IMA) - "Grandfathered"
2.HB.20a

2 : SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulfantimonites, sulfbismuthites, etc.)
H : Sulfosalts of SnS archetype
B : With Cu, Ag, Fe, Sn and Pb
2.11.10.1

2 : SULFIDES
11 : AmBnXp, with (m+n):p = 2:3
5.3.1

5 : Sulphosalts - Sulpharsenites and Sulphobismuthites (those containing Sn, Ge,or V are in Section 6)
3 : Sulpharsenites etc. of Au
mindat.org URL:
http://www.mindat.org/min-2830.html
Please feel free to link to this page.

First Recorded Occurrence of Nagyágite

Year of Discovery:
1845

Occurrences of Nagyágite

Geological Setting:
In Au–Te-bearing epithermal hydrothermal veins.

Physical Properties of Nagyágite

Metallic
Diaphaneity (Transparency):
Opaque
Colour:
Black-grey
Streak:
Blackish lead-grey
Hardness (Mohs):
1 - 1½
Hardness (Vickers):
VHN100=60 - 94 kg/mm2
Tenacity:
Flexible
Cleavage:
Perfect
Perfect on {010}, excellent on {101}.
Density:
7.35 - 7.49 g/cm3 (Measured)    7.29 g/cm3 (Calculated)

Crystallography of Nagyágite

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Cell Parameters:
a = 4.220(1) Å, b = 4.176(1) Å, c = 15.119(3) Å
β = 95.42(3)°
Ratio:
a:b:c = 1.011 : 1 : 3.62
Unit Cell Volume:
V 265.25 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Thin {010} tabular crystals, commonly bent. Also granular.
Twinning:
Multiple twinning on (001).
Comment:
Pseudo-tetragonal/orthorhombic

Crystallographic forms of Nagyágite

Crystal Atlas:
Image Loading
Click on an icon to view
Nagyagite no.2 - Goldschmidt (1913-1926)
Nagyagite no.5 - Goldschmidt (1913-1926)
3d models and HTML5 code kindly provided by www.smorf.nl.

Toggle
Edge Lines | Miller Indicies | Axes

Transparency
Opaque | Translucent | Transparent

View
Along a-axis | Along b-axis | Along c-axis | Start rotation | Stop rotation
X-Ray Powder Diffraction Data:
d-spacingIntensity
3.023 (100)
2.829 (80)
2.431 (40)
2.081 (50)
1.823 (30)
1.710 (30)
1.511 (40)
1.473 (30)
Comments:
Săcărâmb (Nagyág), Romania (ICDD 00-047-1755).

Optical Data of Nagyágite

Type:
Anisotropic
Anisotropism:
Weak but distinct
Reflectivity:
400nmR1=46.4%R2= 48.4%
420nmR1=45.4%R2= 47.4%
440nmR1=44.5%R2= 46.7%
460nmR1=43.6%R2= 45.9%
480nmR1=42.9%R2= 45.1%
500nmR1=42.1%R2= 44.2%
520nmR1=41.3%R2= 43.3%
540nmR1=40.5%R2= 42.4%
560nmR1=39.8%R2= 41.6%
580nmR1=39.2%R2= 40.9%
600nmR1=38.7%R2= 40.3%
620nmR1=38.3%R2= 39.8%
640nmR1=37.8%R2= 39.2%
660nmR1=37.2%R2= 38.6%
680nmR1=36.6%R2= 37.8%
700nmR1=36.0%R2= 37.2%

Reflectance graph
Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 48.4%.
R1 shown in black, R2 shown in red
Colour in reflected light:
Pale grey
Pleochroism:
Weak

Chemical Properties of Nagyágite

Formula:
Pb5Au(Te,Sb)4S5-8
Essential elements:
All elements listed in formula:
Analytical Data:
Average of 61 electron-microprobe analyses. Sample from Săcărâmb (Nagyág), Romania.
Pb (56.76)
Au (7.47)
Ag (0.10)
Fe (0.02)
Cu (0.02)
Sb (7.68)
Te (16.97)
S (10.83)
Total (99.85)
Empirical Formula:
(Te0.78Au0.22)Pb1.00(Pb0.62Sb0.37)S2.00
Common Impurities:
Ag,Fe,Bi

Relationship of Nagyágite to other Species

2.HB.05aAikinitePbCuBiS3
2.HB.05aFriedrichitePb5Cu5Bi7S18
2.HB.05aGladitePbCuBi5S9
2.HB.05aHammaritePb2Cu2Bi4S9
2.HB.05cJaskólskiitePb2+xCux(Sb,Bi)2-xS6 (x = 0.2)
2.HB.05aKrupkaitePbCuBi3S6
2.HB.05aLindströmitePb3Cu3Bi7S15
2.HB.05bMeneghinitePb13CuSb7S24
2.HB.05aPekoitePbCuBi11(S,Se)18
2.HB.05aEmilitePb2.7Cu2.7Bi5.3S12
2.HB.05UM2000-46-S:BiCuPbCu0.33Pb0.33Bi7.67S12
2.HB.05aSalzburgitePb1.6Cu1.6Bi6.4S12
2.HB.05UM1990-54-Se:BiCuPbCuPb(Ni,Co)0.3Bi3Se6
2.HB.05aPaaritePb1.7Cu1.7Bi6.3S12
2.HB.10cEclarite(Cu,Fe)Pb9Bi12S28
2.HB.10bGiessenitePb27Cu2(Bi,Sb)19S57
2.HB.10bIzoklakeitePb27(Cu,Fe,Ag)2(Sb,Bi)19S57
2.HB.10aKobellitePb22Cu4(Bi,Sb)30S69
2.HB.10aTintinaitePb22Cu4(Sb,Bi)30S69
2.HB.15BenavidesitePb4MnSb6S14
2.HB.15JamesonitePb4FeSb6S14
2.HB.20dBerryiteCu3Ag2Pb3Bi7S16
2.HB.20bBuckhorniteAuPb2BiTe2S3
2.HB.20eWatkinsoniteCu2PbBi4(Se,S,Te)8
2.HB.20cMuseumite[Pb2(Pb,Sb)2S8][(Te,Au)2]
2.HB.20eLitochlebiteAg2PbBi4Se8

Other Names for Nagyágite

Other Information

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Nagyágite

Reference List:
Klaproth, M.H. (1802): Chemische Untersuchung der siebenbürgischen Golderze, D. Blättererz, Beiträge zur chemischen Kenntniss der Mineralkörper, Dritter Band, Rottmann Berlin, 26-34

Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: Elements, Sulfides, Sulfosalts, Oxides. John Wiley and Sons, Inc., New York. 7th edition, revised and enlarged, 834pp.: 168-169.

Stumpfel, E.F. (1970): New electron probe and optical data on gold tellurides. American Mineralogist, 55, 808–814.

Stanley, C.J., Roberts, A.C. and Harris, D.C. (1994): New data for nagyagite. Mineralogical Magazine, 58, 479–482.

American Mineralogist (1995): 80: 188.

Lupulescu, M. (1997): Nagyagite; new data and considerations. Rev. Roum. Géol., 41, 29–36.

Effenberger, H., Paar, W.H., Topa, D., Culetto, F.J. and Giester, G. (1999): Towards the crystal structure of nagyagite, [Pb(Pb, Sb)S2][(Au,Te)]. American Mineralogist, 84, 669-676.

Internet Links for Nagyágite

Localities for Nagyágite

map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Argentina
 
  • Catamarca
    • Belén Department
      • Farallón Negro
        • Agua de Dionisio mining district (YMAD)
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990; Milka K. de Brodtkorb (2002) Las Especies Minerales de la Republica Argentina. Vol. 1 (elements, sulphides and sulphosalts). (Asociacion Mineralogica Argentina); DE BRODTKORB, Milka K. Precious metaltellurides and other Te-bearing minerals in different paragenesis of Argentina: A review. Rev. Asoc. Geol. Argent. [online]. 2009, vol.64, n.3, pp. 365-372.
Raúl J. Tauber Larry{s collection
Armenia
 
  • Gelark'unik' Province (Geghark'unik')
    • Vardenis
Pavel M. Kartashov analytical data (2013)
  • Kotayk' Province
    • Hrazdan
Extra Lapis English No. 5 Gold; Kovalenker, V. A., Zalibekyan, M. A., Laputina, I. P., Malov, V. S., Sandomirskaya, S. M., Garas' ko, M. I., & Mkhitaryan, D. I. (1990). Sulfide-telluride mineralization of the Megradzor ore field, Armenia. International Geology Review, 32(7), 705-720.
Australia
 
  • Western Australia
reflected light and SEM/EDS study
    • Laverton Shire
      • Mount Weld Station
Sung, Y.-H., et al., "Tellurides from the Sunrise Dam gold deposit, Yilgarn Craton, Western Australia: a new occurrence of nagyagite", Mineralogy & Petrology 91, 249-270(2007)
Austria
 
  • Salzburg
    • Lungau
      • Murwinkel
        • Schellgaden
          • Gold mines
C. Auer: Lapis 20(11):11-20 (1995)
Azerbaijan
 
  • Belokan-Avar ore district
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia
Bulgaria
 
  • Sofiya Oblast (Sofia Oblast)
    • Chelopech
American Mineralogist (1966): 51: 29-36; Econ.Geol.: 83; 395-404
Canada
 
  • British Columbia
    • Revelstoke Mining Division
      • Gainer Creek
        • Ophir Lade Property
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990; R. P Rothwell (1898) The Mineral Industry, its statistics, technology and trade. Vol. 6 Scientific Publishing Co., New York
  • Northwest Territories
    • Mackenzie District
      • Yellowknife
RIDLAND, G. C (1941): Mineralogy of the Negus and Con Mines, Yellowknife, Northwest
RIDLAND, G. C (1941): Mineralogy of the Negus and Con Mines, Yellowknife, Northwest
  • Ontario
    • Thunder Bay District
      • Moss Township
Dana 7:I:169.
Chile
 
  • Atacama Region
    • Chañaral Province
      • Diego de Almagro
        • Potrerillos
Maksaev, V., Townley, B., Palacios, C., and Camus, F. (2007): Metallic ore deposits. In: Moreno, T., and Gibbons, W. (editors): The Geology of Chile. The Geological Society (London), pp. 414.
China
 
  • Xinjiang Autonomous Region
    • Yili Hasake Autonomous Prefecture (Ili Kazakh Autonomous Prefecture)
      • Aletai Prefecture (Altay Prefecture)
        • Habahe Co. (Kaba Co.; Qaba Co.)
Huiliang Xiao, Yongguan Dong, Jiyuan Zhou, Henian Wang, Junfeng Ji, and Yu Zhao (2002): Mineral Deposits 21(suppl.), 715-718
Czech Republic
 
  • Bohemia (Böhmen; Boehmen)
    • Central Bohemia Region
      • Jílové (Eule)
        • Jílové Gold mining District
          • Bohuliby
Lapis 2000(4), 13-30
    • Liberec Region
      • Jablonec nad Nisou
        • Jílové u Držkova
Small and microscopical minerals, Gold Shaft, Jílové, ČGO
Ecuador
 
  • El Oro Province
    • Zaruma Canton
I. Vikentyev, R. Banda, A. Tsepin, V. Prokofiev, O. Vikentyeva (2005) Mineralogy and formation conditions of Portovelo-Zaruma gold-sulphide vein deposit, Ecuador. IGCP Project 486, 2005 Field Workshop, Kiten, Bulgaria, 14-19 September 2005
Egypt
 
  • Red Sea Governorate
    • Eastern Desert
      • Qift area (Kift area; Coptos area)
Osman A. M., Pieczonka J., Piestrzyński A. 2002: Relationships between gold and tellurides in the El Sid gold deposit, Eastern Desert, Egypt. Mineralogia Polonica, vol. 33, no 2, 15-26
Fiji
 
  • Viti Levu
Anthony, Bideaux, Bladh, Nichols: "Handbook of Mineralogy", Vol. 1, 1990
      • Vatukoula
D. W. Pals and P. G. Spry "Telluride mineralogy of the low-sulfidation" Mineralogy and Petrology (2003) 79: 285–307
Guyana
 
  • Upper Takutu-Upper Essequibo Region
    • Omai
      • Omai gold mine
Gabriel Voicu (1999) Geology, Geochemistry and Metallogeny of the Omai Gold Deposit, Guiana Shield, South America. PhD Thesis University of Quebec Chicoutimi.
Japan
 
  • Honshu Island
    • Chubu Region
      • Shizuoka Prefecture
        • Shimoda City
          • Rendaiji
(unpublished species lists maintained by local collectors; needs confirmation)
Kazakhstan
 
  • Eastern Kazakhstan Province (Shyghys Qazaqstan Oblysy; Vostochno-Kazakhstanskaya Oblast')
    • Altai Mts (Rudnyi Altai)
Глоба В.А. Месторождение Манка - новый геолого-промышленный тип месторождений золота. // Изв. НАН РК, Сер. геол. 2006, 5(403), с.20-28.
Mexico
 
  • Chihuahua
    • Mun. de Moris
      • Sahuayacan
Panczner (1987): 281 & 295.
Panczner (1987): 281, 295.
New Zealand
 
  • North Island
    • Waikato
      • Thames-Coromandel
        • Thames
Dana 7:I:169.
Norway
 
  • Hordaland
    • Bømlo
      • Lykling
Hoel, T. (1989): Bomlø (Sic!)- ein altes Goldvorkommen in Norwegen-neu entdeckt. Emser Heft. 10 (4), 45-49
Abildgaard, N. A. (2014): Om gullet på Bømlo..og min tid som gullgraver der. Stein. 41 (1), 4-13
Romania
 
  • Alba Co.
Mineralogical Record 13:389-400
  • Hunedoara Co.
    • Brad
Econ.Geol.: 83; 395-404; Singer, D.A., Berger, V.I., and Moring, B.C. (2008): US Geological Survey Open-File Report 2008-1155.
    • Deva
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 755; Lapis (1989): 9: 8; American Mineralogist (1995): 80: 188.; Econ.Geol.: 83; 395-404; Marcoux, E., Grancea, L., Lupulescu, M., & Milési, J. (2002). Lead isotope signatures of epithermal and porphyry-type ore deposits from the Romanian Carpathian Mountains. Mineralium Deposita, 37(2), 173-184.; Cook, N. J., Ciobanu, C. L., Capraru, N., Damian, G., & Cristea, P. (2005). Mineral assemblages from the vein salband at Sacarimb, Golden Quadrilateral, Romania: II. Tellurides. Geokhimiia, Mineralogiia i Petrologiia, 43, 56-63.; Simon, G., Alderton, D. H. M., Stumpfl, E. F., & Bleser, T. (1995). Tellurantimony in Romania: first occurrences in Europe. Mineralogy and Petrology, 53(1-3), 115-124.
Sweden
 
  • Värmland
    • Arvika
      • Glava
Scherbina, A. S. (1941): The gold-rich chalcocite-bornite deposit of Glava in Vermland, Sweden, and its geological setting. Neues Jahrb. Mineral., Geol., Beilage-Band, 76A, 377-458.
Switzerland
 
  • Wallis (Valais)
    • Simplon
Stalder, H. A., Wagner, A., Graeser, S. and Stuker, P. (1998): "Mineralienlexikon der Schweiz", Wepf (Basel), p. 193.
UK
 
  • Wales
    • Gwynedd (Merionethshire)
      • Dolgellau Gold Belt
        • Bontddu
BMS Database; R. E. Bevins (1988) Sixth Supplementary List of British Isles Minerals (Welsh). Mineralogical Magazine 52:121-124
USA
 
  • Alaska
    • Matanuska-Susitna Borough
      • Willow Creek District
USGS OFR 98-598(Hawley,1998)
USGS OFR 98-598(Hawley,1998)
U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225.
U.S. Geological Survey, 2008, Alaska Resource Data File (ARDF): U.S. Geological Survey Open-File Report 2008-1225.
  • California
    • Calaveras Co.
      • Mother Lode Belt
        • Carson Hill District (Melones District)
          • Melones
            • Carson Hill Gold Mining Company Mines (Carson Hill Mines)
Whitney, J.D. (1865), Geological survey of California, Geology, 1, Report of progress and synopsis of the field work from 1860 to 1864: 263; Murdoch, Joseph & Robert W. Webb (1966), Minerals of California, Centennial Volume (1866-1966): California Division Mines & Geology Bulletin 189: 276.
    • Trinity Co.
      • Klamath Mts
        • Preachers Peak
Hershey, Oscar H. (1899), The upper Coffee Creek mining district, California: Mining & Scientific Press: 79: 689; Osborne, H.Z. (1903), The Dorleska gold mine: Mining and Scientific Press: 7: 252; Stines, Norman S. (1907), The geology of the Coffee Creek mining district, California: Mining and Scientific Press: 95: 25-26; Palache, Charles, Harry Berman & Clifford Frondel (1944), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana Yale University 1837-1892, Volume I: 7th edition, revised and enlarged, 834pp.: 169.
  • Colorado
    • Boulder Co.
      • Gold Hill District
        • Gold Hill
Minerals of Colorado (1997) Eckel, E. B.
Minerals of Colorado (1997)
Minerals of Colorado (1997)
Minerals of Colorado (1997) E.B. Eckels
Minerals of Colorado (1997) E.B. Eckels
Minerals of Colorado (1997) Eckels, E. B.
      • Jamestown District
Minerals of Colorado (1997)
Minerals of Colorado (1997)
Minerals of Colorado (1997)
Minerals of Colorado (1997) E.B. Eckels
    • Clear Creek Co.
      • Georgetown District
Minerals of Colorado (1997) Eckels, E. B.
      • Idaho Springs District
Minerals of Colorado (1997)
    • Teller Co.
Minerals of Colorado (1997)
  • Montana
    • Fergus Co.
      • Warm Springs District (Gilt Edge District; Gold Hill District; Maiden District)
        • Cone Butte Sub-District
Econ Geol (1994) 89:602-627
    • Madison Co.
      • Alder Gulch District (Virginia City District; Fairweather District)
        • Summit
U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia.; USGS Bull 574
      • Norwegian District (Whitehall District)
Mineralogical Magazine 1996 60 : 871-876
  • Nevada
    • Mineral Co.
      • Borealis District
        • Borealis mine
NBMG Spec. Pub. 31 Minerals of Nevada
  • New Hampshire
    • Rockingham Co.
      • Newington
        • Great Bay National Wildlife Refuge
ora K. Foley, Robert A. Ayuso, Joseph D. Ayotte, Denise L. Montgomery, and Gilpin R. Robinson, Jr. (2006): Geological Assessment of Cores from the Great Bay National Wildlife Refuge, New Hampshire (USGS Scientific Investigations Report 2006-5203).
  • New Mexico
    • Sierra Co.
      • Chloride District
        • Chloride
Minerals of New Mexico 3rd ed.
Northrop, Minerals of New Mexico, 3rd Rev. Ed., 1996
  • North Carolina
    • Cleveland Co.
      • Kings Mountain District
Dana 7:I:169.
Genth, F.A.,1891,The Minerals Of North Carolina;USGS Bulletion No.74
Genth,F.A and Kerr, W.C. 1881, Mineral and Mineral Localities of North Carolina , Geological Survey
    • Montgomery Co.
John E.Callahan,James R.Craig,Todd N.Solberg,Telluride Mineralization of the Southeastern United States,Southeastern Geology,V.35,No.3,Sep,1995,pg.139-151
  • Virginia
    • Spotsylvania Co.
      • Gold-Pyrite Belt
Henwood, W.J. (1871): Transactions of the Royal Geological Society of Cornwall 8(1), 371-384
Uzbekistan
 
  • Tashkent Viloyati (Toshkent)
    • Angren Region
      • Chatkal-Kuraminskii Range
Eleonora A. Dunin-Barkovskaya, Umid K. Aripov, L.A. Tsoy, M.A. Kim (2005) Mineralogical features and ore-forming conditions of goldbearing deposits of Uzbekistan. GEOCHMISTRY, MINERALOGY AND PETROLOGY 43 SOFIA pp 69-74
Rustam Koneev, Evgeniy Ignatikov, Arpay Turesebekov, Umid Aripov, Rustam Khalmatov, Obidjon Kodirov, Miraziz Usmanov (2005) Gold ore deposits of Uzbekistan: Geochemistry and nanomineralogy of tellurium and selenium. IGCP Project 486, 2005 Field Workshop, Kiten, Bulgaria, 14-19 September 2005; GEOCHMISTRY, MINERALOGY AND PETROLOGY • 4 3 • SOFIA pp 69-74
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